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authorAndreas Rumpf <andreas@andreas-desktop>2009-12-10 00:50:09 +0100
committerAndreas Rumpf <andreas@andreas-desktop>2009-12-10 00:50:09 +0100
commit033c28f1115bafd901e9db656beeb05e7b6034c9 (patch)
tree0b195d4c6a53878e988adf0046a240b2b7fdbfa2 /nimlib/posix
parent5d11292542c3e154ef84f261ca0461ce7d3ba4af (diff)
downloadNim-033c28f1115bafd901e9db656beeb05e7b6034c9.tar.gz
added nimlib/posix
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diff --git a/nimlib/posix/posix.nim b/nimlib/posix/posix.nim
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+#
+#
+#            Nimrod's Runtime Library
+#        (c) Copyright 2009 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+# Until std_arg!!
+# done: ipc, pwd, stat, semaphore, sys/types, sys/utsname, pthread, unistd,
+# statvfs, mman, time, wait, signal, nl_types, sched, spawn, select, ucontext,
+# net/if, sys/socket, sys/uio, netinet/in, netinet/tcp, netdb
+
+## This is a raw POSIX interface module. It does not not provide any
+## convenience: cstrings are used instead of proper Nimrod strings and
+## return codes indicate errors. If you want exceptions 
+## and a proper Nimrod-like interface, use the OS module or write a wrapper.
+
+## Coding conventions:
+## ALL types are named the same as in the POSIX standard except that they start
+## with 'T' or 'P' (if they are pointers) and without the '_t' prefix to be
+## consistent with Nimrod conventions. If an identifier is a Nimrod keyword
+## the \`identifier\` notation is used.
+##
+## This library relies on the header files of your C compiler. Thus the
+## resulting C code will just include <XYZ.h> and *not* define the
+## symbols declared here.
+
+from times import TTime
+
+const
+  hasSpawnH = defined(linux)
+  hasAioH = defined(linux)
+
+when false:
+  const
+    C_IRUSR = 0c000400 ## Read by owner.
+    C_IWUSR = 0c000200 ## Write by owner.
+    C_IXUSR = 0c000100 ## Execute by owner.
+    C_IRGRP = 0c000040 ## Read by group.
+    C_IWGRP = 0c000020 ## Write by group.
+    C_IXGRP = 0c000010 ## Execute by group.
+    C_IROTH = 0c000004 ## Read by others.
+    C_IWOTH = 0c000002 ## Write by others.
+    C_IXOTH = 0c000001 ## Execute by others.
+    C_ISUID = 0c004000 ## Set user ID.
+    C_ISGID = 0c002000 ## Set group ID.
+    C_ISVTX = 0c001000 ## On directories, restricted deletion flag.
+    C_ISDIR = 0c040000 ## Directory.
+    C_ISFIFO = 0c010000 ##FIFO.
+    C_ISREG = 0c100000 ## Regular file.
+    C_ISBLK = 0c060000 ## Block special.
+    C_ISCHR = 0c020000 ## Character special.
+    C_ISCTG = 0c110000 ## Reserved.
+    C_ISLNK = 0c120000 ## Symbolic link.</p>
+    C_ISSOCK = 0c140000 ## Socket.
+
+const
+  MM_NULLLBL* = nil
+  MM_NULLSEV* = 0
+  MM_NULLMC* = 0
+  MM_NULLTXT* = nil
+  MM_NULLACT* = nil
+  MM_NULLTAG* = nil
+  
+  STDERR_FILENO* = 2 ## File number of stderr;
+  STDIN_FILENO* = 0  ## File number of stdin;
+  STDOUT_FILENO* = 1 ## File number of stdout; 
+
+type
+  TDIR* {.importc: "DIR", header: "<dirent.h>", final, pure.} = object
+    ## A type representing a directory stream. 
+
+  Tdirent* {.importc: "struct dirent", 
+             header: "<dirent.h>", final, pure.} = object ## dirent_t struct
+    d_ino*: TIno  ## File serial number.
+    d_name*: array [0..255, char] ## Name of entry.
+
+  Tflock* {.importc: "flock", final, pure,
+            header: "<fcntl.h>".} = object ## flock type
+    l_type*: cshort   ## Type of lock; F_RDLCK, F_WRLCK, F_UNLCK. 
+    l_whence*: cshort ## Flag for starting offset. 
+    l_start*: Toff    ## Relative offset in bytes. 
+    l_len*: Toff      ## Size; if 0 then until EOF. 
+    l_pid*: TPid      ## Process ID of the process holding the lock; 
+                      ## returned with F_GETLK. 
+  
+  Tfenv* {.importc: "fenv_t", header: "<fenv.h>", final, pure.} = 
+    object ## Represents the entire floating-point environment. The
+           ## floating-point environment refers collectively to any
+           ## floating-point status flags and control modes supported
+           ## by the implementation.
+  Tfexcept* {.importc: "fexcept_t", header: "<fenv.h>", final, pure.} = 
+    object ## Represents the floating-point status flags collectively, 
+           ## including any status the implementation associates with the 
+           ## flags. A floating-point status flag is a system variable 
+           ## whose value is set (but never cleared) when a floating-point
+           ## exception is raised, which occurs as a side effect of
+           ## exceptional floating-point arithmetic to provide auxiliary
+           ## information. A floating-point control mode is a system variable
+           ## whose value may be set by the user to affect the subsequent 
+           ## behavior of floating-point arithmetic.
+
+  TFTW* {.importc: "struct FTW", header: "<ftw.h>", final, pure.} = object
+    base*: cint
+    level*: cint
+    
+  TGlob* {.importc: "glob_t", header: "<glob.h>", 
+           final, pure.} = object ## glob_t
+    gl_pathc*: int          ## Count of paths matched by pattern. 
+    gl_pathv*: cstringArray ## Pointer to a list of matched pathnames. 
+    gl_offs*: int           ## Slots to reserve at the beginning of gl_pathv. 
+  
+  TGroup* {.importc: "struct group", header: "<grp.h>", 
+            final, pure.} = object ## struct group
+    gr_name*: cstring     ## The name of the group. 
+    gr_gid*: TGid         ## Numerical group ID. 
+    gr_mem*: cstringArray ## Pointer to a null-terminated array of character 
+                          ## pointers to member names. 
+
+  Ticonv* {.importc: "iconv_t", header: "<iconv.h>", final, pure.} = 
+    object ## Identifies the conversion from one codeset to another.
+
+  Tlconv* {.importc: "struct lconv", header: "<locale.h>", final, pure.} = object
+    currency_symbol*: cstring
+    decimal_point*: cstring
+    frac_digits*: char
+    grouping*: cstring
+    int_curr_symbol*: cstring
+    int_frac_digits*: char
+    int_n_cs_precedes*: char
+    int_n_sep_by_space*: char
+    int_n_sign_posn*: char
+    int_p_cs_precedes*: char
+    int_p_sep_by_space*: char
+    int_p_sign_posn*: char
+    mon_decimal_point*: cstring
+    mon_grouping*: cstring
+    mon_thousands_sep*: cstring
+    negative_sign*: cstring
+    n_cs_precedes*: char
+    n_sep_by_space*: char
+    n_sign_posn*: char
+    positive_sign*: cstring
+    p_cs_precedes*: char
+    p_sep_by_space*: char
+    p_sign_posn*: char
+    thousands_sep*: cstring
+
+  TMqd* {.importc: "mqd_t", header: "<mqueue.h>", final, pure.} = object
+  TMqAttr* {.importc: "struct mq_attr", 
+             header: "<mqueue.h>", 
+             final, pure.} = object ## message queue attribute
+    mq_flags*: int   ## Message queue flags. 
+    mq_maxmsg*: int  ## Maximum number of messages. 
+    mq_msgsize*: int ## Maximum message size. 
+    mq_curmsgs*: int ## Number of messages currently queued. 
+
+  TPasswd* {.importc: "struct passwd", header: "<pwd.h>", 
+             final, pure.} = object ## struct passwd
+    pw_name*: cstring   ## User's login name. 
+    pw_uid*: TUid       ## Numerical user ID. 
+    pw_gid*: TGid       ## Numerical group ID. 
+    pw_dir*: cstring    ## Initial working directory. 
+    pw_shell*: cstring  ## Program to use as shell. 
+
+  Tblkcnt* {.importc: "blkcnt_t", header: "<sys/types.h>".} = int
+    ## used for file block counts
+  Tblksize* {.importc: "blksize_t", header: "<sys/types.h>".} = int
+    ## used for block sizes
+  TClock* {.importc: "clock_t", header: "<sys/types.h>".} = int
+  TClockId* {.importc: "clockid_t", header: "<sys/types.h>".} = int
+  TDev* {.importc: "dev_t", header: "<sys/types.h>".} = int
+  Tfsblkcnt* {.importc: "fsblkcnt_t", header: "<sys/types.h>".} = int
+  Tfsfilcnt* {.importc: "fsfilcnt_t", header: "<sys/types.h>".} = int
+  TGid* {.importc: "gid_t", header: "<sys/types.h>".} = int
+  Tid* {.importc: "id_t", header: "<sys/types.h>".} = int
+  Tino* {.importc: "ino_t", header: "<sys/types.h>".} = int
+  TKey* {.importc: "key_t", header: "<sys/types.h>".} = int
+  TMode* {.importc: "mode_t", header: "<sys/types.h>".} = int
+  TNlink* {.importc: "nlink_t", header: "<sys/types.h>".} = int
+  TOff* {.importc: "off_t", header: "<sys/types.h>".} = int64
+  TPid* {.importc: "pid_t", header: "<sys/types.h>".} = int
+  Tpthread_attr* {.importc: "pthread_attr_t", header: "<sys/types.h>".} = int
+  Tpthread_barrier* {.importc: "pthread_barrier_t", 
+                      header: "<sys/types.h>".} = int
+  Tpthread_barrierattr* {.importc: "pthread_barrierattr_t", 
+                          header: "<sys/types.h>".} = int
+  Tpthread_cond* {.importc: "pthread_cond_t", header: "<sys/types.h>".} = int
+  Tpthread_condattr* {.importc: "pthread_condattr_t", 
+                       header: "<sys/types.h>".} = int
+  Tpthread_key* {.importc: "pthread_key_t", header: "<sys/types.h>".} = int
+  Tpthread_mutex* {.importc: "pthread_mutex_t", header: "<sys/types.h>".} = int
+  Tpthread_mutexattr* {.importc: "pthread_mutexattr_t", 
+                        header: "<sys/types.h>".} = int
+  Tpthread_once* {.importc: "pthread_once_t", header: "<sys/types.h>".} = int
+  Tpthread_rwlock* {.importc: "pthread_rwlock_t", header: "<sys/types.h>".} = int
+  Tpthread_rwlockattr* {.importc: "pthread_rwlockattr_t", 
+                         header: "<sys/types.h>".} = int
+  Tpthread_spinlock* {.importc: "pthread_spinlock_t", 
+                       header: "<sys/types.h>".} = int
+  Tpthread* {.importc: "pthread_t", header: "<sys/types.h>".} = int
+  Tsuseconds* {.importc: "suseconds_t", header: "<sys/types.h>".} = int
+  #Ttime* {.importc: "time_t", header: "<sys/types.h>".} = int
+  Ttimer* {.importc: "timer_t", header: "<sys/types.h>".} = int
+  Ttrace_attr* {.importc: "trace_attr_t", header: "<sys/types.h>".} = int
+  Ttrace_event_id* {.importc: "trace_event_id_t", 
+                     header: "<sys/types.h>".} = int
+  Ttrace_event_set* {.importc: "trace_event_set_t", 
+                      header: "<sys/types.h>".} = int
+  Ttrace_id* {.importc: "trace_id_t", header: "<sys/types.h>".} = int
+  Tuid* {.importc: "uid_t", header: "<sys/types.h>".} = int
+  Tuseconds* {.importc: "useconds_t", header: "<sys/types.h>".} = int
+  
+  Tutsname* {.importc: "struct utsname", 
+              header: "<sys/utsname.h>", 
+              final, pure.} = object ## struct utsname
+    sysname*,      ## Name of this implementation of the operating system. 
+      nodename*,   ## Name of this node within the communications 
+                   ## network to which this node is attached, if any. 
+      release*,    ## Current release level of this implementation. 
+      version*,    ## Current version level of this release. 
+      machine*: array [0..255, char] ## Name of the hardware type on which the
+                                     ## system is running. 
+
+  TSem* {.importc: "sem_t", header: "<semaphore.h>", final, pure.} = object
+  Tipc_perm* {.importc: "struct ipc_perm", 
+               header: "<sys/ipc.h>", final, pure.} = object ## struct ipc_perm
+    uid*: tuid    ## Owner's user ID. 
+    gid*: tgid    ## Owner's group ID. 
+    cuid*: Tuid   ## Creator's user ID. 
+    cgid*: Tgid   ## Creator's group ID. 
+    mode*: TMode  ## Read/write permission. 
+  
+  TStat* {.importc: "struct stat", 
+           header: "<sys/stat.h>", final, pure.} = object ## struct stat
+    st_dev*: TDev          ## Device ID of device containing file. 
+    st_ino*: TIno          ## File serial number. 
+    st_mode*: TMode        ## Mode of file (see below). 
+    st_nlink*: tnlink      ## Number of hard links to the file. 
+    st_uid*: tuid          ## User ID of file. 
+    st_gid*: Tgid          ## Group ID of file. 
+    st_rdev*: TDev         ## Device ID (if file is character or block special). 
+    st_size*: TOff         ## For regular files, the file size in bytes. 
+                           ## For symbolic links, the length in bytes of the 
+                           ## pathname contained in the symbolic link. 
+                           ## For a shared memory object, the length in bytes. 
+                           ## For a typed memory object, the length in bytes. 
+                           ## For other file types, the use of this field is 
+                           ## unspecified. 
+    st_atime*: ttime       ## Time of last access. 
+    st_mtime*: ttime       ## Time of last data modification. 
+    st_ctime*: ttime       ## Time of last status change. 
+    st_blksize*: Tblksize  ## A file system-specific preferred I/O block size  
+                           ## for this object. In some file system types, this 
+                           ## may vary from file to file. 
+    st_blocks*: Tblkcnt    ## Number of blocks allocated for this object. 
+
+  
+  TStatvfs* {.importc: "struct statvfs", header: "<sys/statvfs.h>", 
+              final, pure.} = object ## struct statvfs
+    f_bsize*: int        ## File system block size. 
+    f_frsize*: int       ## Fundamental file system block size. 
+    f_blocks*: Tfsblkcnt ## Total number of blocks on file system
+                         ## in units of f_frsize. 
+    f_bfree*: Tfsblkcnt  ## Total number of free blocks. 
+    f_bavail*: Tfsblkcnt ## Number of free blocks available to 
+                         ## non-privileged process. 
+    f_files*: Tfsfilcnt  ## Total number of file serial numbers. 
+    f_ffree*: Tfsfilcnt  ## Total number of free file serial numbers. 
+    f_favail*: Tfsfilcnt ## Number of file serial numbers available to 
+                         ## non-privileged process. 
+    f_fsid*: int         ## File system ID. 
+    f_flag*: int         ## Bit mask of f_flag values. 
+    f_namemax*: int      ## Maximum filename length. 
+
+  Tposix_typed_mem_info* {.importc: "struct posix_typed_mem_info", 
+                           header: "<sys/mman.h>", final, pure.} = object
+    posix_tmi_length*: int
+  
+  Ttm* {.importc: "struct tm", header: "<time.h>", 
+         final, pure.} = object ## struct tm
+    tm_sec*: cint   ## Seconds [0,60]. 
+    tm_min*: cint   ## Minutes [0,59]. 
+    tm_hour*: cint  ## Hour [0,23]. 
+    tm_mday*: cint  ## Day of month [1,31]. 
+    tm_mon*: cint   ## Month of year [0,11]. 
+    tm_year*: cint  ## Years since 1900. 
+    tm_wday*: cint  ## Day of week [0,6] (Sunday =0). 
+    tm_yday*: cint  ## Day of year [0,365]. 
+    tm_isdst*: cint ## Daylight Savings flag. 
+  Ttimespec* {.importc: "struct timespec", 
+               header: "<time.h>", final, pure.} = object ## struct timespec
+    tv_sec*: Ttime ## Seconds. 
+    tv_nsec*: int  ## Nanoseconds. 
+  titimerspec* {.importc: "struct itimerspec", header: "<time.h>", 
+                 final, pure.} = object ## struct itimerspec
+    it_interval*: ttimespec ## Timer period. 
+    it_value*: ttimespec    ## Timer expiration. 
+  
+  Tsig_atomic* {.importc: "sig_atomic_t", header: "<signal.h>".} = cint
+    ## Possibly volatile-qualified integer type of an object that can be 
+    ## accessed as an atomic entity, even in the presence of asynchronous
+    ## interrupts.
+  Tsigset* {.importc: "sigset_t", header: "<signal.h>", final, pure.} = object
+  
+  TsigEvent* {.importc: "struct sigevent", 
+               header: "<signal.h>", final, pure.} = object ## struct sigevent
+    sigev_notify*: cint           ## Notification type. 
+    sigev_signo*: cint            ## Signal number. 
+    sigev_value*: Tsigval         ## Signal value. 
+    sigev_notify_function*: proc (x: TSigval) {.noconv.} ## Notification function. 
+    sigev_notify_attributes*: ptr Tpthreadattr ## Notification attributes.
+
+  TsigVal* {.importc: "union sigval", 
+             header: "<signal.h>", final, pure.} = object ## struct sigval
+    sival_ptr*: pointer ## pointer signal value; 
+                        ## integer signal value not defined!
+  TSigaction* {.importc: "struct sigaction", 
+                header: "<signal.h>", final, pure.} = object ## struct sigaction
+    sa_handler*: proc (x: cint) {.noconv.}  ## Pointer to a signal-catching
+                                            ## function or one of the macros 
+                                            ## SIG_IGN or SIG_DFL. 
+    sa_mask*: TsigSet ## Set of signals to be blocked during execution of 
+                      ## the signal handling function. 
+    sa_flags*: cint   ## Special flags. 
+    sa_sigaction*: proc (x: cint, y: var TSigInfo, z: pointer) {.noconv.}
+
+  TStack* {.importc: "stack_t",
+            header: "<signal.h>", final, pure.} = object ## stack_t
+    ss_sp*: pointer  ## Stack base or pointer. 
+    ss_size*: int    ## Stack size. 
+    ss_flags*: cint  ## Flags. 
+
+  TSigStack* {.importc: "struct sigstack", 
+               header: "<signal.h>", final, pure.} = object ## struct sigstack
+    ss_onstack*: cint ## Non-zero when signal stack is in use. 
+    ss_sp*: pointer   ## Signal stack pointer. 
+
+  TsigInfo* {.importc: "siginfo_t", 
+              header: "<signal.h>", final, pure.} = object ## siginfo_t
+    si_signo*: cint    ## Signal number. 
+    si_code*: cint     ## Signal code. 
+    si_errno*: cint    ## If non-zero, an errno value associated with 
+                       ## this signal, as defined in <errno.h>. 
+    si_pid*: tpid      ## Sending process ID. 
+    si_uid*: tuid      ## Real user ID of sending process. 
+    si_addr*: pointer  ## Address of faulting instruction. 
+    si_status*: cint   ## Exit value or signal. 
+    si_band*: int      ## Band event for SIGPOLL. 
+    si_value*: TSigval ## Signal value. 
+  
+  Tnl_item* {.importc: "nl_item", header: "<nl_types.h>".} = cint
+  Tnl_catd* {.importc: "nl_catd", header: "<nl_types.h>".} = cint
+
+  Tsched_param* {.importc: "struct sched_param", 
+                  header: "<sched.h>", 
+                  final, pure.} = object ## struct sched_param
+    sched_priority*: cint
+    sched_ss_low_priority*: cint     ## Low scheduling priority for 
+                                     ## sporadic server. 
+    sched_ss_repl_period*: ttimespec ## Replenishment period for 
+                                     ## sporadic server. 
+    sched_ss_init_budget*: ttimespec ## Initial budget for sporadic server. 
+    sched_ss_max_repl*: cint         ## Maximum pending replenishments for 
+                                     ## sporadic server. 
+
+  Ttimeval* {.importc: "struct timeval", header: "<sys/select.h>", 
+              final, pure.} = object ## struct timeval
+    tv_sec*: ttime       ## Seconds. 
+    tv_usec*: tsuseconds ## Microseconds. 
+  Tfd_set* {.importc: "struct fd_set", header: "<sys/select.h>", 
+             final, pure.} = object
+  Tmcontext* {.importc: "mcontext_t", header: "<ucontext.h>", 
+               final, pure.} = object
+  Tucontext* {.importc: "ucontext_t", header: "<ucontext.h>", 
+               final, pure.} = object ## ucontext_t
+    uc_link*: ptr Tucontext ## Pointer to the context that is resumed 
+                            ## when this context returns. 
+    uc_sigmask*: Tsigset    ## The set of signals that are blocked when this 
+                            ## context is active. 
+    uc_stack*: TStack       ## The stack used by this context. 
+    uc_mcontext*: Tmcontext ## A machine-specific representation of the saved 
+                            ## context. 
+
+when hasAioH:
+  type
+    Taiocb* {.importc: "struct aiocb", header: "<aio.h>", 
+              final, pure.} = object ## struct aiocb
+      aio_fildes*: cint         ## File descriptor. 
+      aio_offset*: TOff         ## File offset. 
+      aio_buf*: pointer         ## Location of buffer. 
+      aio_nbytes*: int          ## Length of transfer. 
+      aio_reqprio*: cint        ## Request priority offset. 
+      aio_sigevent*: TSigEvent  ## Signal number and value. 
+      aio_lio_opcode: cint      ## Operation to be performed. 
+ 
+when hasSpawnH:
+  type
+    Tposix_spawnattr* {.importc: "posix_spawnattr_t", 
+                        header: "<spawn.h>".} = cint
+    Tposix_spawn_file_actions* {.importc: "posix_spawn_file_actions_t", 
+                                 header: "<spawn.h>".} = cint 
+
+type
+  TSocklen* {.importc: "socklen_t", header: "<sys/socket.h>".} = cint
+  TSa_Family* {.importc: "sa_family_t", header: "<sys/socket.h>".} = cint
+  
+  TSockAddr* {.importc: "struct sockaddr", header: "<sys/socket.h>", 
+               pure, final.} = object ## struct sockaddr
+    sa_family*: Tsa_family         ## Address family. 
+    sa_data*: array [0..255, char] ## Socket address (variable-length data). 
+  
+  Tsockaddr_storage* {.importc: "struct sockaddr_storage",
+                       header: "<sys/socket.h>", 
+                       pure, final.} = object ## struct sockaddr_storage
+    ss_family*: Tsa_family ## Address family. 
+
+  Tif_nameindex* {.importc: "struct if_nameindex", final, 
+                   pure, header: "<net/if.h>".} = object ## struct if_nameindex
+    if_index*: cint   ## Numeric index of the interface. 
+    if_name*: cstring ## Null-terminated name of the interface. 
+
+
+  TIOVec* {.importc: "struct iovec", pure, final,
+            header: "<sys/uio.h>".} = object ## struct iovec
+    iov_base*: pointer ## Base address of a memory region for input or output. 
+    iov_len*: int    ## The size of the memory pointed to by iov_base. 
+    
+  Tmsghdr* {.importc: "struct msghdr", pure, final,
+             header: "<sys/socket.h>".} = object  ## struct msghdr
+    msg_name*: pointer  ## Optional address. 
+    msg_namelen*: TSockLen  ## Size of address. 
+    msg_iov*: ptr TIOVec    ## Scatter/gather array. 
+    msg_iovlen*: cint   ## Members in msg_iov. 
+    msg_control*: pointer  ## Ancillary data; see below. 
+    msg_controllen*: TSockLen ## Ancillary data buffer len. 
+    msg_flags*: cint ## Flags on received message. 
+
+
+  Tcmsghdr* {.importc: "struct cmsghdr", pure, final, 
+              header: "<sys/socket.h>".} = object ## struct cmsghdr
+    cmsg_len*: TSockLen ## Data byte count, including the cmsghdr. 
+    cmsg_level*: cint   ## Originating protocol. 
+    cmsg_type*: cint    ## Protocol-specific type. 
+
+  TLinger* {.importc: "struct linger", pure, final, 
+             header: "<sys/socket.h>".} = object ## struct linger
+    l_onoff*: cint  ## Indicates whether linger option is enabled. 
+    l_linger*: cint ## Linger time, in seconds. 
+  
+  TInPort* = int16 ## unsigned!
+  TInAddrScalar* = int32 ## unsigned!
+  
+  TInAddr* {.importc: "struct in_addr", pure, final, 
+             header: "<netinet/in.h>".} = object ## struct in_addr
+    s_addr*: TInAddrScalar
+
+  Tsockaddr_in* {.importc: "struct sockaddr_in", pure, final, 
+                  header: "<netinet/in.h>".} = object ## struct sockaddr_in
+    sin_family*: TSa_family ## AF_INET. 
+    sin_port*: TInPort      ## Port number. 
+    sin_addr*: TInAddr      ## IP address. 
+
+  TIn6Addr* {.importc: "struct in6_addr", pure, final,
+              header: "<netinet/in.h>".} = object ## struct in6_addr
+    s6_addr*: array [0..15, char]
+
+  Tsockaddr_in6* {.importc: "struct sockaddr_in6", pure, final,
+                   header: "<netinet/in.h>".} = object ## struct sockaddr_in6
+    sin6_family*: TSa_family ## AF_INET6. 
+    sin6_port*: TInPort      ## Port number. 
+    sin6_flowinfo*: int32    ## IPv6 traffic class and flow information. 
+    sin6_addr*: Tin6Addr     ## IPv6 address. 
+    sin6_scope_id*: int32    ## Set of interfaces for a scope. 
+  
+  Tipv6_mreq* {.importc: "struct ipv6_mreq", pure, final, 
+                header: "<netinet/in.h>".} = object ## struct ipv6_mreq
+    ipv6mr_multiaddr*: TIn6Addr ## IPv6 multicast address. 
+    ipv6mr_interface*: cint     ## Interface index. 
+
+  Thostent* {.importc: "struct hostent", pure, final, 
+              header: "<netdb.h>".} = object ## struct hostent
+    h_name*: cstring           ## Official name of the host. 
+    h_aliases*: cstringArray   ## A pointer to an array of pointers to 
+                               ## alternative host names, terminated by a 
+                               ## null pointer. 
+    h_addrtype*: cint          ## Address type. 
+    h_length*: cint            ## The length, in bytes, of the address. 
+    h_addr_list*: cstringArray ## A pointer to an array of pointers to network 
+                               ## addresses (in network byte order) for the
+                               ## host, terminated by a null pointer. 
+
+  Tnetent* {.importc: "struct netent", pure, final, 
+              header: "<netdb.h>".} = object ## struct netent
+    n_name*: cstring         ## Official, fully-qualified (including the 
+                             ## domain) name of the host. 
+    n_aliases*: cstringArray ## A pointer to an array of pointers to 
+                             ## alternative network names, terminated by a 
+                             ## null pointer. 
+    n_addrtype*: cint        ## The address type of the network. 
+    n_net*: int32            ## The network number, in host byte order. 
+
+  TProtoent* {.importc: "struct protoent", pure, final, 
+              header: "<netdb.h>".} = object ## struct protoent
+    p_name*: cstring         ## Official name of the protocol. 
+    p_aliases*: cstringArray ## A pointer to an array of pointers to 
+                             ## alternative protocol names, terminated by 
+                             ## a null pointer. 
+    p_proto*: cint           ## The protocol number. 
+
+  TServent* {.importc: "struct servent", pure, final, 
+              header: "<netdb.h>".} = object ## struct servent
+    s_name*: cstring         ## Official name of the service. 
+    s_aliases*: cstringArray ## A pointer to an array of pointers to 
+                             ## alternative service names, terminated by 
+                             ## a null pointer. 
+    s_port*: cint            ## The port number at which the service 
+                             ## resides, in network byte order. 
+    s_proto*: cstring        ## The name of the protocol to use when 
+                             ## contacting the service. 
+
+  Taddrinfo* {.importc: "struct addrinfo", pure, final, 
+              header: "<netdb.h>".} = object ## struct addrinfo
+    ai_flags*: cint         ## Input flags. 
+    ai_family*: cint        ## Address family of socket. 
+    ai_socktype*: cint      ## Socket type. 
+    ai_protocol*: cint      ## Protocol of socket. 
+    ai_addrlen*: TSockLen   ## Length of socket address. 
+    ai_addr*: ptr TSockAddr ## Socket address of socket. 
+    ai_canonname*: cstring  ## Canonical name of service location. 
+    ai_next*: ptr TAddrInfo ## Pointer to next in list. 
+  
+  TPollfd* {.importc: "struct pollfd", pure, final, 
+             header: "<poll.h>".} = object ## struct pollfd
+    fd*: cint        ## The following descriptor being polled. 
+    events*: cshort  ## The input event flags (see below). 
+    revents*: cshort ## The output event flags (see below).  
+  
+  Tnfds* {.importc: "nfds_t", header: "<poll.h>".} = cint
+
+var
+  errno* {.importc, header: "<errno.h>".}: cint ## error variable
+  daylight* {.importc, header: "<time.h>".}: cint
+  timezone* {.importc, header: "<time.h>".}: int
+  
+# Constants as variables:
+when hasAioH:
+  var
+    AIO_ALLDONE* {.importc, header: "<aio.h>".}: cint
+      ## A return value indicating that none of the requested operations 
+      ## could be canceled since they are already complete.
+    AIO_CANCELED* {.importc, header: "<aio.h>".}: cint
+      ## A return value indicating that all requested operations have
+      ## been canceled.
+    AIO_NOTCANCELED* {.importc, header: "<aio.h>".}: cint
+      ## A return value indicating that some of the requested operations could 
+      ## not be canceled since they are in progress.
+    LIO_NOP* {.importc, header: "<aio.h>".}: cint
+      ## A lio_listio() element operation option indicating that no transfer is
+      ## requested.
+    LIO_NOWAIT* {.importc, header: "<aio.h>".}: cint
+      ## A lio_listio() synchronization operation indicating that the calling 
+      ## thread is to continue execution while the lio_listio() operation is 
+      ## being performed, and no notification is given when the operation is
+      ## complete.
+    LIO_READ* {.importc, header: "<aio.h>".}: cint
+      ## A lio_listio() element operation option requesting a read.
+    LIO_WAIT* {.importc, header: "<aio.h>".}: cint
+      ## A lio_listio() synchronization operation indicating that the calling 
+      ## thread is to suspend until the lio_listio() operation is complete.
+    LIO_WRITE* {.importc, header: "<aio.h>".}: cint
+      ## A lio_listio() element operation option requesting a write.
+
+var
+  RTLD_LAZY* {.importc, header: "<dlfcn.h>".}: cint
+    ## Relocations are performed at an implementation-defined time.
+  RTLD_NOW* {.importc, header: "<dlfcn.h>".}: cint
+    ## Relocations are performed when the object is loaded.
+  RTLD_GLOBAL* {.importc, header: "<dlfcn.h>".}: cint
+    ## All symbols are available for relocation processing of other modules.
+  RTLD_LOCAL* {.importc, header: "<dlfcn.h>".}: cint
+    ## All symbols are not made available for relocation processing by 
+    ## other modules. 
+    
+  E2BIG* {.importc, header: "<errno.h>".}: cint
+      ## Argument list too long.
+  EACCES* {.importc, header: "<errno.h>".}: cint
+      ## Permission denied.
+  EADDRINUSE* {.importc, header: "<errno.h>".}: cint
+      ## Address in use.
+  EADDRNOTAVAIL* {.importc, header: "<errno.h>".}: cint
+      ## Address not available.
+  EAFNOSUPPORT* {.importc, header: "<errno.h>".}: cint
+      ## Address family not supported.
+  EAGAIN* {.importc, header: "<errno.h>".}: cint
+      ## Resource unavailable, try again (may be the same value as [EWOULDBLOCK]).
+  EALREADY* {.importc, header: "<errno.h>".}: cint
+      ## Connection already in progress.
+  EBADF* {.importc, header: "<errno.h>".}: cint
+      ## Bad file descriptor.
+  EBADMSG* {.importc, header: "<errno.h>".}: cint
+      ## Bad message.
+  EBUSY* {.importc, header: "<errno.h>".}: cint
+      ## Device or resource busy.
+  ECANCELED* {.importc, header: "<errno.h>".}: cint
+      ## Operation canceled.
+  ECHILD* {.importc, header: "<errno.h>".}: cint
+      ## No child processes.
+  ECONNABORTED* {.importc, header: "<errno.h>".}: cint
+      ## Connection aborted.
+  ECONNREFUSED* {.importc, header: "<errno.h>".}: cint
+      ## Connection refused.
+  ECONNRESET* {.importc, header: "<errno.h>".}: cint
+      ## Connection reset.
+  EDEADLK* {.importc, header: "<errno.h>".}: cint
+      ## Resource deadlock would occur.
+  EDESTADDRREQ* {.importc, header: "<errno.h>".}: cint
+      ## Destination address required.
+  EDOM* {.importc, header: "<errno.h>".}: cint
+      ## Mathematics argument out of domain of function.
+  EDQUOT* {.importc, header: "<errno.h>".}: cint
+      ## Reserved.
+  EEXIST* {.importc, header: "<errno.h>".}: cint
+      ## File exists.
+  EFAULT* {.importc, header: "<errno.h>".}: cint
+      ## Bad address.
+  EFBIG* {.importc, header: "<errno.h>".}: cint
+      ## File too large.
+  EHOSTUNREACH* {.importc, header: "<errno.h>".}: cint
+      ## Host is unreachable.
+  EIDRM* {.importc, header: "<errno.h>".}: cint
+      ## Identifier removed.
+  EILSEQ* {.importc, header: "<errno.h>".}: cint
+      ## Illegal byte sequence.
+  EINPROGRESS* {.importc, header: "<errno.h>".}: cint
+      ## Operation in progress.
+  EINTR* {.importc, header: "<errno.h>".}: cint
+      ## Interrupted function.
+  EINVAL* {.importc, header: "<errno.h>".}: cint
+      ## Invalid argument.
+  EIO* {.importc, header: "<errno.h>".}: cint
+      ## I/O error.
+  EISCONN* {.importc, header: "<errno.h>".}: cint
+      ## Socket is connected.
+  EISDIR* {.importc, header: "<errno.h>".}: cint
+      ## Is a directory.
+  ELOOP* {.importc, header: "<errno.h>".}: cint
+      ## Too many levels of symbolic links.
+  EMFILE* {.importc, header: "<errno.h>".}: cint
+      ## Too many open files.
+  EMLINK* {.importc, header: "<errno.h>".}: cint
+      ## Too many links.
+  EMSGSIZE* {.importc, header: "<errno.h>".}: cint
+      ## Message too large.
+  EMULTIHOP* {.importc, header: "<errno.h>".}: cint
+      ## Reserved.
+  ENAMETOOLONG* {.importc, header: "<errno.h>".}: cint
+      ## Filename too long.
+  ENETDOWN* {.importc, header: "<errno.h>".}: cint
+      ## Network is down.
+  ENETRESET* {.importc, header: "<errno.h>".}: cint
+      ## Connection aborted by network.
+  ENETUNREACH* {.importc, header: "<errno.h>".}: cint
+      ## Network unreachable.
+  ENFILE* {.importc, header: "<errno.h>".}: cint
+      ## Too many files open in system.
+  ENOBUFS* {.importc, header: "<errno.h>".}: cint
+      ## No buffer space available.
+  ENODATA* {.importc, header: "<errno.h>".}: cint
+      ## No message is available on the STREAM head read queue.
+  ENODEV* {.importc, header: "<errno.h>".}: cint
+      ## No such device.
+  ENOENT* {.importc, header: "<errno.h>".}: cint
+      ## No such file or directory.
+  ENOEXEC* {.importc, header: "<errno.h>".}: cint
+      ## Executable file format error.
+  ENOLCK* {.importc, header: "<errno.h>".}: cint
+      ## No locks available.
+  ENOLINK* {.importc, header: "<errno.h>".}: cint
+      ## Reserved.
+  ENOMEM* {.importc, header: "<errno.h>".}: cint
+      ## Not enough space.
+  ENOMSG* {.importc, header: "<errno.h>".}: cint
+      ## No message of the desired type.
+  ENOPROTOOPT* {.importc, header: "<errno.h>".}: cint
+      ## Protocol not available.
+  ENOSPC* {.importc, header: "<errno.h>".}: cint
+      ## No space left on device.
+  ENOSR* {.importc, header: "<errno.h>".}: cint
+      ## No STREAM resources.
+  ENOSTR* {.importc, header: "<errno.h>".}: cint
+      ## Not a STREAM.
+  ENOSYS* {.importc, header: "<errno.h>".}: cint
+      ## Function not supported.
+  ENOTCONN* {.importc, header: "<errno.h>".}: cint
+      ## The socket is not connected.
+  ENOTDIR* {.importc, header: "<errno.h>".}: cint
+      ## Not a directory.
+  ENOTEMPTY* {.importc, header: "<errno.h>".}: cint
+      ## Directory not empty.
+  ENOTSOCK* {.importc, header: "<errno.h>".}: cint
+      ## Not a socket.
+  ENOTSUP* {.importc, header: "<errno.h>".}: cint
+      ## Not supported.
+  ENOTTY* {.importc, header: "<errno.h>".}: cint
+      ## Inappropriate I/O control operation.
+  ENXIO* {.importc, header: "<errno.h>".}: cint
+      ## No such device or address.
+  EOPNOTSUPP* {.importc, header: "<errno.h>".}: cint
+      ## Operation not supported on socket.
+  EOVERFLOW* {.importc, header: "<errno.h>".}: cint
+      ## Value too large to be stored in data type.
+  EPERM* {.importc, header: "<errno.h>".}: cint
+      ## Operation not permitted.
+  EPIPE* {.importc, header: "<errno.h>".}: cint
+      ## Broken pipe.
+  EPROTO* {.importc, header: "<errno.h>".}: cint
+      ## Protocol error.
+  EPROTONOSUPPORT* {.importc, header: "<errno.h>".}: cint
+      ## Protocol not supported.
+  EPROTOTYPE* {.importc, header: "<errno.h>".}: cint
+      ## Protocol wrong type for socket.
+  ERANGE* {.importc, header: "<errno.h>".}: cint
+      ## Result too large.
+  EROFS* {.importc, header: "<errno.h>".}: cint
+      ## Read-only file system.
+  ESPIPE* {.importc, header: "<errno.h>".}: cint
+      ## Invalid seek.
+  ESRCH* {.importc, header: "<errno.h>".}: cint
+      ## No such process.
+  ESTALE* {.importc, header: "<errno.h>".}: cint
+      ## Reserved.
+  ETIME* {.importc, header: "<errno.h>".}: cint
+      ## Stream ioctl() timeout.
+  ETIMEDOUT* {.importc, header: "<errno.h>".}: cint
+      ## Connection timed out.
+  ETXTBSY* {.importc, header: "<errno.h>".}: cint
+      ## Text file busy.
+  EWOULDBLOCK* {.importc, header: "<errno.h>".}: cint
+      ## Operation would block (may be the same value as [EAGAIN]).
+  EXDEV* {.importc, header: "<errno.h>".}: cint
+      ## Cross-device link.   
+
+  F_DUPFD* {.importc, header: "<fcntl.h>".}: cint
+    ## Duplicate file descriptor.
+  F_GETFD* {.importc, header: "<fcntl.h>".}: cint
+    ## Get file descriptor flags.
+  F_SETFD* {.importc, header: "<fcntl.h>".}: cint
+    ## Set file descriptor flags.
+  F_GETFL* {.importc, header: "<fcntl.h>".}: cint
+    ## Get file status flags and file access modes.
+  F_SETFL* {.importc, header: "<fcntl.h>".}: cint
+    ## Set file status flags.
+  F_GETLK* {.importc, header: "<fcntl.h>".}: cint
+    ## Get record locking information.
+  F_SETLK* {.importc, header: "<fcntl.h>".}: cint
+    ## Set record locking information.
+  F_SETLKW* {.importc, header: "<fcntl.h>".}: cint
+    ## Set record locking information; wait if blocked.
+  F_GETOWN* {.importc, header: "<fcntl.h>".}: cint
+    ## Get process or process group ID to receive SIGURG signals.
+  F_SETOWN* {.importc, header: "<fcntl.h>".}: cint
+    ## Set process or process group ID to receive SIGURG signals. 
+  FD_CLOEXEC* {.importc, header: "<fcntl.h>".}: cint
+    ## Close the file descriptor upon execution of an exec family function. 
+  F_RDLCK* {.importc, header: "<fcntl.h>".}: cint
+    ## Shared or read lock.
+  F_UNLCK* {.importc, header: "<fcntl.h>".}: cint
+    ## Unlock.
+  F_WRLCK* {.importc, header: "<fcntl.h>".}: cint
+    ## Exclusive or write lock. 
+  O_CREAT* {.importc, header: "<fcntl.h>".}: cint
+    ## Create file if it does not exist.
+  O_EXCL* {.importc, header: "<fcntl.h>".}: cint
+    ## Exclusive use flag.
+  O_NOCTTY* {.importc, header: "<fcntl.h>".}: cint
+    ## Do not assign controlling terminal.
+  O_TRUNC* {.importc, header: "<fcntl.h>".}: cint
+    ## Truncate flag. 
+  O_APPEND* {.importc, header: "<fcntl.h>".}: cint
+    ## Set append mode.
+  O_DSYNC* {.importc, header: "<fcntl.h>".}: cint
+    ## Write according to synchronized I/O data integrity completion.
+  O_NONBLOCK* {.importc, header: "<fcntl.h>".}: cint
+    ## Non-blocking mode.
+  O_RSYNC* {.importc, header: "<fcntl.h>".}: cint
+    ## Synchronized read I/O operations.
+  O_SYNC* {.importc, header: "<fcntl.h>".}: cint
+    ## Write according to synchronized I/O file integrity completion. 
+  O_ACCMODE* {.importc, header: "<fcntl.h>".}: cint
+    ## Mask for file access modes.      
+  O_RDONLY* {.importc, header: "<fcntl.h>".}: cint
+    ## Open for reading only.
+  O_RDWR* {.importc, header: "<fcntl.h>".}: cint
+    ## Open for reading and writing.
+  O_WRONLY* {.importc, header: "<fcntl.h>".}: cint
+    ## Open for writing only. 
+  POSIX_FADV_NORMAL* {.importc, header: "<fcntl.h>".}: cint
+    ## The application has no advice to give on its behavior with
+    ## respect to the specified data. It is the default characteristic
+    ## if no advice is given for an open file.
+  POSIX_FADV_SEQUENTIAL* {.importc, header: "<fcntl.h>".}: cint
+    ## The application expects to access the specified data 
+    # sequentially from lower offsets to higher offsets.
+  POSIX_FADV_RANDOM* {.importc, header: "<fcntl.h>".}: cint
+    ## The application expects to access the specified data in a random order.
+  POSIX_FADV_WILLNEED* {.importc, header: "<fcntl.h>".}: cint
+    ## The application expects to access the specified data in the near future.
+  POSIX_FADV_DONTNEED* {.importc, header: "<fcntl.h>".}: cint
+    ## The application expects that it will not access the specified data
+    ## in the near future.
+  POSIX_FADV_NOREUSE* {.importc, header: "<fcntl.h>".}: cint
+    ## The application expects to access the specified data once and 
+    ## then not reuse it thereafter. 
+
+  FE_DIVBYZERO* {.importc, header: "<fenv.h>".}: cint
+  FE_INEXACT* {.importc, header: "<fenv.h>".}: cint
+  FE_INVALID* {.importc, header: "<fenv.h>".}: cint
+  FE_OVERFLOW* {.importc, header: "<fenv.h>".}: cint
+  FE_UNDERFLOW* {.importc, header: "<fenv.h>".}: cint
+  FE_ALL_EXCEPT* {.importc, header: "<fenv.h>".}: cint
+  FE_DOWNWARD* {.importc, header: "<fenv.h>".}: cint
+  FE_TONEAREST* {.importc, header: "<fenv.h>".}: cint
+  FE_TOWARDZERO* {.importc, header: "<fenv.h>".}: cint
+  FE_UPWARD* {.importc, header: "<fenv.h>".}: cint
+  FE_DFL_ENV* {.importc, header: "<fenv.h>".}: cint
+
+  MM_HARD* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Source of the condition is hardware.
+  MM_SOFT* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Source of the condition is software.
+  MM_FIRM* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Source of the condition is firmware.
+  MM_APPL* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Condition detected by application.
+  MM_UTIL* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Condition detected by utility.
+  MM_OPSYS* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Condition detected by operating system.
+  MM_RECOVER* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Recoverable error.
+  MM_NRECOV* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Non-recoverable error.
+  MM_HALT* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Error causing application to halt.
+  MM_ERROR* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Application has encountered a non-fatal fault.
+  MM_WARNING* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Application has detected unusual non-error condition.
+  MM_INFO* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Informative message.
+  MM_NOSEV* {.importc, header: "<fmtmsg.h>".}: cint
+    ## No severity level provided for the message.
+  MM_PRINT* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Display message on standard error.
+  MM_CONSOLE* {.importc, header: "<fmtmsg.h>".}: cint
+    ## Display message on system console. 
+
+  MM_OK* {.importc, header: "<fmtmsg.h>".}: cint
+    ## The function succeeded.
+  MM_NOTOK* {.importc, header: "<fmtmsg.h>".}: cint
+    ## The function failed completely.
+  MM_NOMSG* {.importc, header: "<fmtmsg.h>".}: cint
+    ## The function was unable to generate a message on standard error, 
+    ## but otherwise succeeded.
+  MM_NOCON* {.importc, header: "<fmtmsg.h>".}: cint
+    ## The function was unable to generate a console message, but 
+    ## otherwise succeeded. 
+    
+  FNM_NOMATCH* {.importc, header: "<fnmatch.h>".}: cint
+    ## The string does not match the specified pattern.
+  FNM_PATHNAME* {.importc, header: "<fnmatch.h>".}: cint
+    ## Slash in string only matches slash in pattern.
+  FNM_PERIOD* {.importc, header: "<fnmatch.h>".}: cint
+    ## Leading period in string must be exactly matched by period in pattern.
+  FNM_NOESCAPE* {.importc, header: "<fnmatch.h>".}: cint
+    ## Disable backslash escaping.
+  FNM_NOSYS* {.importc, header: "<fnmatch.h>".}: cint
+    ## Reserved.
+
+  FTW_F* {.importc, header: "<ftw.h>".}: cint
+    ## File.
+  FTW_D* {.importc, header: "<ftw.h>".}: cint
+    ## Directory.
+  FTW_DNR* {.importc, header: "<ftw.h>".}: cint
+    ## Directory without read permission.
+  FTW_DP* {.importc, header: "<ftw.h>".}: cint
+    ## Directory with subdirectories visited.
+  FTW_NS* {.importc, header: "<ftw.h>".}: cint
+    ## Unknown type; stat() failed.
+  FTW_SL* {.importc, header: "<ftw.h>".}: cint
+    ## Symbolic link.
+  FTW_SLN* {.importc, header: "<ftw.h>".}: cint
+    ## Symbolic link that names a nonexistent file.
+
+  FTW_PHYS* {.importc, header: "<ftw.h>".}: cint
+    ## Physical walk, does not follow symbolic links. Otherwise, nftw() 
+    ## follows links but does not walk down any path that crosses itself.
+  FTW_MOUNT* {.importc, header: "<ftw.h>".}: cint
+    ## The walk does not cross a mount point.
+  FTW_DEPTH* {.importc, header: "<ftw.h>".}: cint
+    ## All subdirectories are visited before the directory itself.
+  FTW_CHDIR* {.importc, header: "<ftw.h>".}: cint
+    ## The walk changes to each directory before reading it. 
+
+  GLOB_APPEND* {.importc, header: "<glob.h>".}: cint
+    ## Append generated pathnames to those previously obtained.
+  GLOB_DOOFFS* {.importc, header: "<glob.h>".}: cint
+    ## Specify how many null pointers to add to the beginning of gl_pathv.
+  GLOB_ERR* {.importc, header: "<glob.h>".}: cint
+    ## Cause glob() to return on error.
+  GLOB_MARK* {.importc, header: "<glob.h>".}: cint
+    ## Each pathname that is a directory that matches pattern has a 
+    ## slash appended.
+  GLOB_NOCHECK* {.importc, header: "<glob.h>".}: cint
+    ## If pattern does not match any pathname, then return a list
+    ## consisting of only pattern.
+  GLOB_NOESCAPE* {.importc, header: "<glob.h>".}: cint
+    ## Disable backslash escaping.
+  GLOB_NOSORT* {.importc, header: "<glob.h>".}: cint
+    ## Do not sort the pathnames returned.
+  GLOB_ABORTED* {.importc, header: "<glob.h>".}: cint
+    ## The scan was stopped because GLOB_ERR was set or errfunc() 
+    ## returned non-zero.
+  GLOB_NOMATCH* {.importc, header: "<glob.h>".}: cint
+    ## The pattern does not match any existing pathname, and GLOB_NOCHECK 
+    ## was not set in flags.
+  GLOB_NOSPACE* {.importc, header: "<glob.h>".}: cint
+    ## An attempt to allocate memory failed.
+  GLOB_NOSYS* {.importc, header: "<glob.h>".}: cint
+    ## Reserved
+
+  CODESET* {.importc, header: "<langinfo.h>".}: cint
+    ## Codeset name.
+  D_T_FMT* {.importc, header: "<langinfo.h>".}: cint
+    ## String for formatting date and time.
+  D_FMT * {.importc, header: "<langinfo.h>".}: cint
+    ## Date format string.
+  T_FMT* {.importc, header: "<langinfo.h>".}: cint
+    ## Time format string.
+  T_FMT_AMPM* {.importc, header: "<langinfo.h>".}: cint
+    ## a.m. or p.m. time format string.
+  AM_STR* {.importc, header: "<langinfo.h>".}: cint
+    ## Ante-meridiem affix.
+  PM_STR* {.importc, header: "<langinfo.h>".}: cint
+    ## Post-meridiem affix.
+  DAY_1* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the first day of the week (for example, Sunday).
+  DAY_2* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the second day of the week (for example, Monday).
+  DAY_3* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the third day of the week (for example, Tuesday).
+  DAY_4* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the fourth day of the week (for example, Wednesday).
+  DAY_5* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the fifth day of the week (for example, Thursday).
+  DAY_6* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the sixth day of the week (for example, Friday).
+  DAY_7* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the seventh day of the week (for example, Saturday).
+  ABDAY_1* {.importc, header: "<langinfo.h>".}: cint
+    ## Abbreviated name of the first day of the week.
+  ABDAY_2* {.importc, header: "<langinfo.h>".}: cint
+  ABDAY_3* {.importc, header: "<langinfo.h>".}: cint
+  ABDAY_4* {.importc, header: "<langinfo.h>".}: cint
+  ABDAY_5* {.importc, header: "<langinfo.h>".}: cint
+  ABDAY_6* {.importc, header: "<langinfo.h>".}: cint
+  ABDAY_7* {.importc, header: "<langinfo.h>".}: cint
+  MON_1* {.importc, header: "<langinfo.h>".}: cint
+    ## Name of the first month of the year.
+  MON_2* {.importc, header: "<langinfo.h>".}: cint
+  MON_3* {.importc, header: "<langinfo.h>".}: cint
+  MON_4* {.importc, header: "<langinfo.h>".}: cint
+  MON_5* {.importc, header: "<langinfo.h>".}: cint
+  MON_6* {.importc, header: "<langinfo.h>".}: cint
+  MON_7* {.importc, header: "<langinfo.h>".}: cint
+  MON_8* {.importc, header: "<langinfo.h>".}: cint
+  MON_9* {.importc, header: "<langinfo.h>".}: cint
+  MON_10* {.importc, header: "<langinfo.h>".}: cint
+  MON_11* {.importc, header: "<langinfo.h>".}: cint
+  MON_12* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_1* {.importc, header: "<langinfo.h>".}: cint
+    ## Abbreviated name of the first month.
+  ABMON_2* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_3* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_4* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_5* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_6* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_7* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_8* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_9* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_10* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_11* {.importc, header: "<langinfo.h>".}: cint
+  ABMON_12* {.importc, header: "<langinfo.h>".}: cint
+  ERA* {.importc, header: "<langinfo.h>".}: cint
+    ## Era description segments.
+  ERA_D_FMT* {.importc, header: "<langinfo.h>".}: cint
+    ## Era date format string.
+  ERA_D_T_FMT* {.importc, header: "<langinfo.h>".}: cint
+    ## Era date and time format string.
+  ERA_T_FMT* {.importc, header: "<langinfo.h>".}: cint
+    ## Era time format string.
+  ALT_DIGITS* {.importc, header: "<langinfo.h>".}: cint
+    ## Alternative symbols for digits.
+  RADIXCHAR* {.importc, header: "<langinfo.h>".}: cint
+    ## Radix character.
+  THOUSEP* {.importc, header: "<langinfo.h>".}: cint
+    ## Separator for thousands.
+  YESEXPR* {.importc, header: "<langinfo.h>".}: cint
+    ## Affirmative response expression.
+  NOEXPR* {.importc, header: "<langinfo.h>".}: cint
+    ## Negative response expression.
+  CRNCYSTR* {.importc, header: "<langinfo.h>".}: cint
+    ## Local currency symbol, preceded by '-' if the symbol 
+    ## should appear before the value, '+' if the symbol should appear 
+    ## after the value, or '.' if the symbol should replace the radix
+    ## character. If the local currency symbol is the empty string, 
+    ## implementations may return the empty string ( "" ).
+
+  LC_ALL* {.importc, header: "<locale.h>".}: cint
+  LC_COLLATE* {.importc, header: "<locale.h>".}: cint
+  LC_CTYPE* {.importc, header: "<locale.h>".}: cint
+  LC_MESSAGES* {.importc, header: "<locale.h>".}: cint
+  LC_MONETARY* {.importc, header: "<locale.h>".}: cint
+  LC_NUMERIC* {.importc, header: "<locale.h>".}: cint
+  LC_TIME* {.importc, header: "<locale.h>".}: cint
+  
+  PTHREAD_BARRIER_SERIAL_THREAD* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CANCEL_ASYNCHRONOUS* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CANCEL_ENABLE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CANCEL_DEFERRED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CANCEL_DISABLE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CANCELED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_COND_INITIALIZER* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CREATE_DETACHED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_CREATE_JOINABLE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_EXPLICIT_SCHED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_INHERIT_SCHED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_MUTEX_DEFAULT* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_MUTEX_ERRORCHECK* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_MUTEX_INITIALIZER* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_MUTEX_NORMAL* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_MUTEX_RECURSIVE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_ONCE_INIT* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_PRIO_INHERIT* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_PRIO_NONE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_PRIO_PROTECT* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_PROCESS_SHARED* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_PROCESS_PRIVATE* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_SCOPE_PROCESS* {.importc, header: "<pthread.h>".}: cint
+  PTHREAD_SCOPE_SYSTEM* {.importc, header: "<pthread.h>".}: cint
+
+  POSIX_ASYNC_IO* {.importc: "_POSIX_ASYNC_IO", header: "<unistd.h>".}: cint
+  POSIX_PRIO_IO* {.importc: "_POSIX_PRIO_IO", header: "<unistd.h>".}: cint
+  POSIX_SYNC_IO* {.importc: "_POSIX_SYNC_IO", header: "<unistd.h>".}: cint
+  F_OK* {.importc: "F_OK", header: "<unistd.h>".}: cint
+  R_OK* {.importc: "R_OK", header: "<unistd.h>".}: cint
+  W_OK* {.importc: "W_OK", header: "<unistd.h>".}: cint
+  X_OK* {.importc: "X_OK", header: "<unistd.h>".}: cint
+
+  CS_PATH* {.importc: "_CS_PATH", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFF32_CFLAGS* {.importc: "_CS_POSIX_V6_ILP32_OFF32_CFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFF32_LDFLAGS* {.importc: "_CS_POSIX_V6_ILP32_OFF32_LDFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFF32_LIBS* {.importc: "_CS_POSIX_V6_ILP32_OFF32_LIBS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFFBIG_CFLAGS* {.importc: "_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS* {.importc: "_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_ILP32_OFFBIG_LIBS* {.importc: "_CS_POSIX_V6_ILP32_OFFBIG_LIBS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LP64_OFF64_CFLAGS* {.importc: "_CS_POSIX_V6_LP64_OFF64_CFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LP64_OFF64_LDFLAGS* {.importc: "_CS_POSIX_V6_LP64_OFF64_LDFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LP64_OFF64_LIBS* {.importc: "_CS_POSIX_V6_LP64_OFF64_LIBS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS* {.importc: "_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS* {.importc: "_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_LPBIG_OFFBIG_LIBS* {.importc: "_CS_POSIX_V6_LPBIG_OFFBIG_LIBS", header: "<unistd.h>".}: cint
+  CS_POSIX_V6_WIDTH_RESTRICTED_ENVS* {.importc: "_CS_POSIX_V6_WIDTH_RESTRICTED_ENVS", header: "<unistd.h>".}: cint
+  F_LOCK* {.importc: "F_LOCK", header: "<unistd.h>".}: cint
+  F_TEST* {.importc: "F_TEST", header: "<unistd.h>".}: cint
+  F_TLOCK* {.importc: "F_TLOCK", header: "<unistd.h>".}: cint
+  F_ULOCK* {.importc: "F_ULOCK", header: "<unistd.h>".}: cint
+  PC_2_SYMLINKS* {.importc: "_PC_2_SYMLINKS", header: "<unistd.h>".}: cint
+  PC_ALLOC_SIZE_MIN* {.importc: "_PC_ALLOC_SIZE_MIN", header: "<unistd.h>".}: cint
+  PC_ASYNC_IO* {.importc: "_PC_ASYNC_IO", header: "<unistd.h>".}: cint
+  PC_CHOWN_RESTRICTED* {.importc: "_PC_CHOWN_RESTRICTED", header: "<unistd.h>".}: cint
+  PC_FILESIZEBITS* {.importc: "_PC_FILESIZEBITS", header: "<unistd.h>".}: cint
+  PC_LINK_MAX* {.importc: "_PC_LINK_MAX", header: "<unistd.h>".}: cint
+  PC_MAX_CANON* {.importc: "_PC_MAX_CANON", header: "<unistd.h>".}: cint
+
+  PC_MAX_INPUT*{.importc: "_PC_MAX_INPUT", header: "<unistd.h>".}: cint
+  PC_NAME_MAX*{.importc: "_PC_NAME_MAX", header: "<unistd.h>".}: cint
+  PC_NO_TRUNC*{.importc: "_PC_NO_TRUNC", header: "<unistd.h>".}: cint
+  PC_PATH_MAX*{.importc: "_PC_PATH_MAX", header: "<unistd.h>".}: cint
+  PC_PIPE_BUF*{.importc: "_PC_PIPE_BUF", header: "<unistd.h>".}: cint
+  PC_PRIO_IO*{.importc: "_PC_PRIO_IO", header: "<unistd.h>".}: cint
+  PC_REC_INCR_XFER_SIZE*{.importc: "_PC_REC_INCR_XFER_SIZE", header: "<unistd.h>".}: cint
+  PC_REC_MIN_XFER_SIZE*{.importc: "_PC_REC_MIN_XFER_SIZE", header: "<unistd.h>".}: cint
+  PC_REC_XFER_ALIGN*{.importc: "_PC_REC_XFER_ALIGN", header: "<unistd.h>".}: cint
+  PC_SYMLINK_MAX*{.importc: "_PC_SYMLINK_MAX", header: "<unistd.h>".}: cint
+  PC_SYNC_IO*{.importc: "_PC_SYNC_IO", header: "<unistd.h>".}: cint
+  PC_VDISABLE*{.importc: "_PC_VDISABLE", header: "<unistd.h>".}: cint
+  SC_2_C_BIND*{.importc: "_SC_2_C_BIND", header: "<unistd.h>".}: cint
+  SC_2_C_DEV*{.importc: "_SC_2_C_DEV", header: "<unistd.h>".}: cint
+  SC_2_CHAR_TERM*{.importc: "_SC_2_CHAR_TERM", header: "<unistd.h>".}: cint
+  SC_2_FORT_DEV*{.importc: "_SC_2_FORT_DEV", header: "<unistd.h>".}: cint
+  SC_2_FORT_RUN*{.importc: "_SC_2_FORT_RUN", header: "<unistd.h>".}: cint
+  SC_2_LOCALEDEF*{.importc: "_SC_2_LOCALEDEF", header: "<unistd.h>".}: cint
+  SC_2_PBS*{.importc: "_SC_2_PBS", header: "<unistd.h>".}: cint
+  SC_2_PBS_ACCOUNTING*{.importc: "_SC_2_PBS_ACCOUNTING", header: "<unistd.h>".}: cint
+  SC_2_PBS_CHECKPOINT*{.importc: "_SC_2_PBS_CHECKPOINT", header: "<unistd.h>".}: cint
+  SC_2_PBS_LOCATE*{.importc: "_SC_2_PBS_LOCATE", header: "<unistd.h>".}: cint
+  SC_2_PBS_MESSAGE*{.importc: "_SC_2_PBS_MESSAGE", header: "<unistd.h>".}: cint
+  SC_2_PBS_TRACK*{.importc: "_SC_2_PBS_TRACK", header: "<unistd.h>".}: cint
+  SC_2_SW_DEV*{.importc: "_SC_2_SW_DEV", header: "<unistd.h>".}: cint
+  SC_2_UPE*{.importc: "_SC_2_UPE", header: "<unistd.h>".}: cint
+  SC_2_VERSION*{.importc: "_SC_2_VERSION", header: "<unistd.h>".}: cint
+  SC_ADVISORY_INFO*{.importc: "_SC_ADVISORY_INFO", header: "<unistd.h>".}: cint
+  SC_AIO_LISTIO_MAX*{.importc: "_SC_AIO_LISTIO_MAX", header: "<unistd.h>".}: cint
+  SC_AIO_MAX*{.importc: "_SC_AIO_MAX", header: "<unistd.h>".}: cint
+  SC_AIO_PRIO_DELTA_MAX*{.importc: "_SC_AIO_PRIO_DELTA_MAX", header: "<unistd.h>".}: cint
+  SC_ARG_MAX*{.importc: "_SC_ARG_MAX", header: "<unistd.h>".}: cint
+  SC_ASYNCHRONOUS_IO*{.importc: "_SC_ASYNCHRONOUS_IO", header: "<unistd.h>".}: cint
+  SC_ATEXIT_MAX*{.importc: "_SC_ATEXIT_MAX", header: "<unistd.h>".}: cint
+  SC_BARRIERS*{.importc: "_SC_BARRIERS", header: "<unistd.h>".}: cint
+  SC_BC_BASE_MAX*{.importc: "_SC_BC_BASE_MAX", header: "<unistd.h>".}: cint
+  SC_BC_DIM_MAX*{.importc: "_SC_BC_DIM_MAX", header: "<unistd.h>".}: cint
+  SC_BC_SCALE_MAX*{.importc: "_SC_BC_SCALE_MAX", header: "<unistd.h>".}: cint
+  SC_BC_STRING_MAX*{.importc: "_SC_BC_STRING_MAX", header: "<unistd.h>".}: cint
+  SC_CHILD_MAX*{.importc: "_SC_CHILD_MAX", header: "<unistd.h>".}: cint
+  SC_CLK_TCK*{.importc: "_SC_CLK_TCK", header: "<unistd.h>".}: cint
+  SC_CLOCK_SELECTION*{.importc: "_SC_CLOCK_SELECTION", header: "<unistd.h>".}: cint
+  SC_COLL_WEIGHTS_MAX*{.importc: "_SC_COLL_WEIGHTS_MAX", header: "<unistd.h>".}: cint
+  SC_CPUTIME*{.importc: "_SC_CPUTIME", header: "<unistd.h>".}: cint
+  SC_DELAYTIMER_MAX*{.importc: "_SC_DELAYTIMER_MAX", header: "<unistd.h>".}: cint
+  SC_EXPR_NEST_MAX*{.importc: "_SC_EXPR_NEST_MAX", header: "<unistd.h>".}: cint
+  SC_FSYNC*{.importc: "_SC_FSYNC", header: "<unistd.h>".}: cint
+  SC_GETGR_R_SIZE_MAX*{.importc: "_SC_GETGR_R_SIZE_MAX", header: "<unistd.h>".}: cint
+  SC_GETPW_R_SIZE_MAX*{.importc: "_SC_GETPW_R_SIZE_MAX", header: "<unistd.h>".}: cint
+  SC_HOST_NAME_MAX*{.importc: "_SC_HOST_NAME_MAX", header: "<unistd.h>".}: cint
+  SC_IOV_MAX*{.importc: "_SC_IOV_MAX", header: "<unistd.h>".}: cint
+  SC_IPV6*{.importc: "_SC_IPV6", header: "<unistd.h>".}: cint
+  SC_JOB_CONTROL*{.importc: "_SC_JOB_CONTROL", header: "<unistd.h>".}: cint
+  SC_LINE_MAX*{.importc: "_SC_LINE_MAX", header: "<unistd.h>".}: cint
+  SC_LOGIN_NAME_MAX*{.importc: "_SC_LOGIN_NAME_MAX", header: "<unistd.h>".}: cint
+  SC_MAPPED_FILES*{.importc: "_SC_MAPPED_FILES", header: "<unistd.h>".}: cint
+  SC_MEMLOCK*{.importc: "_SC_MEMLOCK", header: "<unistd.h>".}: cint
+  SC_MEMLOCK_RANGE*{.importc: "_SC_MEMLOCK_RANGE", header: "<unistd.h>".}: cint
+  SC_MEMORY_PROTECTION*{.importc: "_SC_MEMORY_PROTECTION", header: "<unistd.h>".}: cint
+  SC_MESSAGE_PASSING*{.importc: "_SC_MESSAGE_PASSING", header: "<unistd.h>".}: cint
+  SC_MONOTONIC_CLOCK*{.importc: "_SC_MONOTONIC_CLOCK", header: "<unistd.h>".}: cint
+  SC_MQ_OPEN_MAX*{.importc: "_SC_MQ_OPEN_MAX", header: "<unistd.h>".}: cint
+  SC_MQ_PRIO_MAX*{.importc: "_SC_MQ_PRIO_MAX", header: "<unistd.h>".}: cint
+  SC_NGROUPS_MAX*{.importc: "_SC_NGROUPS_MAX", header: "<unistd.h>".}: cint
+  SC_OPEN_MAX*{.importc: "_SC_OPEN_MAX", header: "<unistd.h>".}: cint
+  SC_PAGE_SIZE*{.importc: "_SC_PAGE_SIZE", header: "<unistd.h>".}: cint
+  SC_PRIORITIZED_IO*{.importc: "_SC_PRIORITIZED_IO", header: "<unistd.h>".}: cint
+  SC_PRIORITY_SCHEDULING*{.importc: "_SC_PRIORITY_SCHEDULING", header: "<unistd.h>".}: cint
+  SC_RAW_SOCKETS*{.importc: "_SC_RAW_SOCKETS", header: "<unistd.h>".}: cint
+  SC_RE_DUP_MAX*{.importc: "_SC_RE_DUP_MAX", header: "<unistd.h>".}: cint
+  SC_READER_WRITER_LOCKS*{.importc: "_SC_READER_WRITER_LOCKS", header: "<unistd.h>".}: cint
+  SC_REALTIME_SIGNALS*{.importc: "_SC_REALTIME_SIGNALS", header: "<unistd.h>".}: cint
+  SC_REGEXP*{.importc: "_SC_REGEXP", header: "<unistd.h>".}: cint
+  SC_RTSIG_MAX*{.importc: "_SC_RTSIG_MAX", header: "<unistd.h>".}: cint
+  SC_SAVED_IDS*{.importc: "_SC_SAVED_IDS", header: "<unistd.h>".}: cint
+  SC_SEM_NSEMS_MAX*{.importc: "_SC_SEM_NSEMS_MAX", header: "<unistd.h>".}: cint
+  SC_SEM_VALUE_MAX*{.importc: "_SC_SEM_VALUE_MAX", header: "<unistd.h>".}: cint
+  SC_SEMAPHORES*{.importc: "_SC_SEMAPHORES", header: "<unistd.h>".}: cint
+  SC_SHARED_MEMORY_OBJECTS*{.importc: "_SC_SHARED_MEMORY_OBJECTS", header: "<unistd.h>".}: cint
+  SC_SHELL*{.importc: "_SC_SHELL", header: "<unistd.h>".}: cint
+  SC_SIGQUEUE_MAX*{.importc: "_SC_SIGQUEUE_MAX", header: "<unistd.h>".}: cint
+  SC_SPAWN*{.importc: "_SC_SPAWN", header: "<unistd.h>".}: cint
+  SC_SPIN_LOCKS*{.importc: "_SC_SPIN_LOCKS", header: "<unistd.h>".}: cint
+  SC_SPORADIC_SERVER*{.importc: "_SC_SPORADIC_SERVER", header: "<unistd.h>".}: cint
+  SC_SS_REPL_MAX*{.importc: "_SC_SS_REPL_MAX", header: "<unistd.h>".}: cint
+  SC_STREAM_MAX*{.importc: "_SC_STREAM_MAX", header: "<unistd.h>".}: cint
+  SC_SYMLOOP_MAX*{.importc: "_SC_SYMLOOP_MAX", header: "<unistd.h>".}: cint
+  SC_SYNCHRONIZED_IO*{.importc: "_SC_SYNCHRONIZED_IO", header: "<unistd.h>".}: cint
+  SC_THREAD_ATTR_STACKADDR*{.importc: "_SC_THREAD_ATTR_STACKADDR", header: "<unistd.h>".}: cint
+  SC_THREAD_ATTR_STACKSIZE*{.importc: "_SC_THREAD_ATTR_STACKSIZE", header: "<unistd.h>".}: cint
+  SC_THREAD_CPUTIME*{.importc: "_SC_THREAD_CPUTIME", header: "<unistd.h>".}: cint
+  SC_THREAD_DESTRUCTOR_ITERATIONS*{.importc: "_SC_THREAD_DESTRUCTOR_ITERATIONS", header: "<unistd.h>".}: cint
+  SC_THREAD_KEYS_MAX*{.importc: "_SC_THREAD_KEYS_MAX", header: "<unistd.h>".}: cint
+  SC_THREAD_PRIO_INHERIT*{.importc: "_SC_THREAD_PRIO_INHERIT", header: "<unistd.h>".}: cint
+  SC_THREAD_PRIO_PROTECT*{.importc: "_SC_THREAD_PRIO_PROTECT", header: "<unistd.h>".}: cint
+  SC_THREAD_PRIORITY_SCHEDULING*{.importc: "_SC_THREAD_PRIORITY_SCHEDULING", header: "<unistd.h>".}: cint
+  SC_THREAD_PROCESS_SHARED*{.importc: "_SC_THREAD_PROCESS_SHARED", header: "<unistd.h>".}: cint
+  SC_THREAD_SAFE_FUNCTIONS*{.importc: "_SC_THREAD_SAFE_FUNCTIONS", header: "<unistd.h>".}: cint
+  SC_THREAD_SPORADIC_SERVER*{.importc: "_SC_THREAD_SPORADIC_SERVER", header: "<unistd.h>".}: cint
+  SC_THREAD_STACK_MIN*{.importc: "_SC_THREAD_STACK_MIN", header: "<unistd.h>".}: cint
+  SC_THREAD_THREADS_MAX*{.importc: "_SC_THREAD_THREADS_MAX", header: "<unistd.h>".}: cint
+  SC_THREADS*{.importc: "_SC_THREADS", header: "<unistd.h>".}: cint
+  SC_TIMEOUTS*{.importc: "_SC_TIMEOUTS", header: "<unistd.h>".}: cint
+  SC_TIMER_MAX*{.importc: "_SC_TIMER_MAX", header: "<unistd.h>".}: cint
+  SC_TIMERS*{.importc: "_SC_TIMERS", header: "<unistd.h>".}: cint
+  SC_TRACE*{.importc: "_SC_TRACE", header: "<unistd.h>".}: cint
+  SC_TRACE_EVENT_FILTER*{.importc: "_SC_TRACE_EVENT_FILTER", header: "<unistd.h>".}: cint
+  SC_TRACE_EVENT_NAME_MAX*{.importc: "_SC_TRACE_EVENT_NAME_MAX", header: "<unistd.h>".}: cint
+  SC_TRACE_INHERIT*{.importc: "_SC_TRACE_INHERIT", header: "<unistd.h>".}: cint
+  SC_TRACE_LOG*{.importc: "_SC_TRACE_LOG", header: "<unistd.h>".}: cint
+  SC_TRACE_NAME_MAX*{.importc: "_SC_TRACE_NAME_MAX", header: "<unistd.h>".}: cint
+  SC_TRACE_SYS_MAX*{.importc: "_SC_TRACE_SYS_MAX", header: "<unistd.h>".}: cint
+  SC_TRACE_USER_EVENT_MAX*{.importc: "_SC_TRACE_USER_EVENT_MAX", header: "<unistd.h>".}: cint
+  SC_TTY_NAME_MAX*{.importc: "_SC_TTY_NAME_MAX", header: "<unistd.h>".}: cint
+  SC_TYPED_MEMORY_OBJECTS*{.importc: "_SC_TYPED_MEMORY_OBJECTS", header: "<unistd.h>".}: cint
+  SC_TZNAME_MAX*{.importc: "_SC_TZNAME_MAX", header: "<unistd.h>".}: cint
+  SC_V6_ILP32_OFF32*{.importc: "_SC_V6_ILP32_OFF32", header: "<unistd.h>".}: cint
+  SC_V6_ILP32_OFFBIG*{.importc: "_SC_V6_ILP32_OFFBIG", header: "<unistd.h>".}: cint
+  SC_V6_LP64_OFF64*{.importc: "_SC_V6_LP64_OFF64", header: "<unistd.h>".}: cint
+  SC_V6_LPBIG_OFFBIG*{.importc: "_SC_V6_LPBIG_OFFBIG", header: "<unistd.h>".}: cint
+  SC_VERSION*{.importc: "_SC_VERSION", header: "<unistd.h>".}: cint
+  SC_XBS5_ILP32_OFF32*{.importc: "_SC_XBS5_ILP32_OFF32", header: "<unistd.h>".}: cint
+  SC_XBS5_ILP32_OFFBIG*{.importc: "_SC_XBS5_ILP32_OFFBIG", header: "<unistd.h>".}: cint
+  SC_XBS5_LP64_OFF64*{.importc: "_SC_XBS5_LP64_OFF64", header: "<unistd.h>".}: cint
+  SC_XBS5_LPBIG_OFFBIG*{.importc: "_SC_XBS5_LPBIG_OFFBIG", 
+                         header: "<unistd.h>".}: cint
+  SC_XOPEN_CRYPT*{.importc: "_SC_XOPEN_CRYPT", header: "<unistd.h>".}: cint
+  SC_XOPEN_ENH_I18N*{.importc: "_SC_XOPEN_ENH_I18N", header: "<unistd.h>".}: cint
+  SC_XOPEN_LEGACY*{.importc: "_SC_XOPEN_LEGACY", header: "<unistd.h>".}: cint
+  SC_XOPEN_REALTIME*{.importc: "_SC_XOPEN_REALTIME", header: "<unistd.h>".}: cint
+  SC_XOPEN_REALTIME_THREADS*{.importc: "_SC_XOPEN_REALTIME_THREADS", 
+                              header: "<unistd.h>".}: cint
+  SC_XOPEN_SHM*{.importc: "_SC_XOPEN_SHM", header: "<unistd.h>".}: cint
+  SC_XOPEN_STREAMS*{.importc: "_SC_XOPEN_STREAMS", header: "<unistd.h>".}: cint
+  SC_XOPEN_UNIX*{.importc: "_SC_XOPEN_UNIX", header: "<unistd.h>".}: cint
+  SC_XOPEN_VERSION*{.importc: "_SC_XOPEN_VERSION", header: "<unistd.h>".}: cint
+  SC_NPROCESSORS_ONLN*{.importc: "_SC_NPROCESSORS_ONLN", 
+                        header: "<unistd.h>".}: cint
+  
+  SEM_FAILED* {.importc, header: "<semaphore.h>".}: pointer
+  IPC_CREAT* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Create entry if key does not exist.
+  IPC_EXCL* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Fail if key exists.
+  IPC_NOWAIT* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Error if request must wait.
+
+  IPC_PRIVATE* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Private key.
+
+  IPC_RMID* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Remove identifier.
+  IPC_SET* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Set options.
+  IPC_STAT* {.importc, header: "<sys/ipc.h>".}: cint
+    ## Get options. 
+
+  S_IFMT* {.importc, header: "<sys/stat.h>".}: cint
+    ## Type of file.
+  S_IFBLK* {.importc, header: "<sys/stat.h>".}: cint
+    ## Block special.
+  S_IFCHR* {.importc, header: "<sys/stat.h>".}: cint
+    ## Character special.
+  S_IFIFO* {.importc, header: "<sys/stat.h>".}: cint
+    ## FIFO special.
+  S_IFREG* {.importc, header: "<sys/stat.h>".}: cint
+    ## Regular.
+  S_IFDIR* {.importc, header: "<sys/stat.h>".}: cint
+    ## Directory.
+  S_IFLNK* {.importc, header: "<sys/stat.h>".}: cint
+    ## Symbolic link.
+  S_IFSOCK* {.importc, header: "<sys/stat.h>".}: cint
+    ## Socket.
+  S_IRWXU* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read, write, execute/search by owner.
+  S_IRUSR* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read permission, owner.
+  S_IWUSR* {.importc, header: "<sys/stat.h>".}: cint
+    ## Write permission, owner.
+  S_IXUSR* {.importc, header: "<sys/stat.h>".}: cint
+    ## Execute/search permission, owner.
+  S_IRWXG* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read, write, execute/search by group.
+  S_IRGRP* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read permission, group.
+  S_IWGRP* {.importc, header: "<sys/stat.h>".}: cint
+    ## Write permission, group.
+  S_IXGRP* {.importc, header: "<sys/stat.h>".}: cint
+    ## Execute/search permission, group.
+  S_IRWXO* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read, write, execute/search by others.
+  S_IROTH* {.importc, header: "<sys/stat.h>".}: cint
+    ## Read permission, others.
+  S_IWOTH* {.importc, header: "<sys/stat.h>".}: cint
+    ## Write permission, others.
+  S_IXOTH* {.importc, header: "<sys/stat.h>".}: cint
+    ## Execute/search permission, others.
+  S_ISUID* {.importc, header: "<sys/stat.h>".}: cint
+    ## Set-user-ID on execution.
+  S_ISGID* {.importc, header: "<sys/stat.h>".}: cint
+    ## Set-group-ID on execution.
+  S_ISVTX* {.importc, header: "<sys/stat.h>".}: cint
+    ## On directories, restricted deletion flag.
+  
+  ST_RDONLY* {.importc, header: "<sys/statvfs.h>".}: cint
+    ## Read-only file system.
+  ST_NOSUID* {.importc, header: "<sys/statvfs.h>".}: cint
+    ## Does not support the semantics of the ST_ISUID and ST_ISGID file mode bits.
+       
+  PROT_READ* {.importc, header: "<sys/mman.h>".}: cint
+    ## Page can be read.
+  PROT_WRITE* {.importc, header: "<sys/mman.h>".}: cint
+    ## Page can be written.
+  PROT_EXEC* {.importc, header: "<sys/mman.h>".}: cint
+    ## Page can be executed.
+  PROT_NONE* {.importc, header: "<sys/mman.h>".}: cint
+    ## Page cannot be accessed.
+  MAP_SHARED* {.importc, header: "<sys/mman.h>".}: cint
+    ## Share changes.
+  MAP_PRIVATE* {.importc, header: "<sys/mman.h>".}: cint
+    ## Changes are private.
+  MAP_FIXED* {.importc, header: "<sys/mman.h>".}: cint
+    ## Interpret addr exactly.
+  MS_ASYNC* {.importc, header: "<sys/mman.h>".}: cint
+    ## Perform asynchronous writes.
+  MS_SYNC* {.importc, header: "<sys/mman.h>".}: cint
+    ## Perform synchronous writes.
+  MS_INVALIDATE* {.importc, header: "<sys/mman.h>".}: cint
+    ## Invalidate mappings.
+  MCL_CURRENT* {.importc, header: "<sys/mman.h>".}: cint
+    ## Lock currently mapped pages.
+  MCL_FUTURE* {.importc, header: "<sys/mman.h>".}: cint
+    ## Lock pages that become mapped.
+  MAP_FAILED* {.importc, header: "<sys/mman.h>".}: cint
+  POSIX_MADV_NORMAL* {.importc, header: "<sys/mman.h>".}: cint
+    ## The application has no advice to give on its behavior with 
+    ## respect to the specified range. It is the default characteristic 
+    ## if no advice is given for a range of memory.
+  POSIX_MADV_SEQUENTIAL* {.importc, header: "<sys/mman.h>".}: cint
+    ## The application expects to access the specified range sequentially
+    ## from lower addresses to higher addresses.
+  POSIX_MADV_RANDOM* {.importc, header: "<sys/mman.h>".}: cint
+    ## The application expects to access the specified range in a random order.
+  POSIX_MADV_WILLNEED* {.importc, header: "<sys/mman.h>".}: cint
+    ## The application expects to access the specified range in the near future.
+  POSIX_MADV_DONTNEED* {.importc, header: "<sys/mman.h>".}: cint
+  POSIX_TYPED_MEM_ALLOCATE* {.importc, header: "<sys/mman.h>".}: cint
+  POSIX_TYPED_MEM_ALLOCATE_CONTIG* {.importc, header: "<sys/mman.h>".}: cint
+  POSIX_TYPED_MEM_MAP_ALLOCATABLE* {.importc, header: "<sys/mman.h>".}: cint
+
+
+  CLOCKS_PER_SEC* {.importc, header: "<time.h>".}: int
+    ## A number used to convert the value returned by the clock() function
+    ## into seconds.
+  CLOCK_PROCESS_CPUTIME_ID* {.importc, header: "<time.h>".}: cint
+    ## The identifier of the CPU-time clock associated with the process 
+    ## making a clock() or timer*() function call.
+  CLOCK_THREAD_CPUTIME_ID* {.importc, header: "<time.h>".}: cint
+  CLOCK_REALTIME* {.importc, header: "<time.h>".}: cint
+    ## The identifier of the system-wide realtime clock.
+  TIMER_ABSTIME* {.importc, header: "<time.h>".}: cint
+    ## Flag indicating time is absolute. For functions taking timer 
+    ## objects, this refers to the clock associated with the timer.
+  CLOCK_MONOTONIC* {.importc, header: "<time.h>".}: cint
+
+  WNOHANG* {.importc, header: "<sys/wait.h>".}: cint
+    ## Do not hang if no status is available; return immediately.
+  WUNTRACED* {.importc, header: "<sys/wait.h>".}: cint
+    ## Report status of stopped child process.
+  WEXITSTATUS* {.importc, header: "<sys/wait.h>".}: cint
+    ## Return exit status.
+  WIFCONTINUED* {.importc, header: "<sys/wait.h>".}: cint
+    ## True if child has been continued.
+  WIFEXITED* {.importc, header: "<sys/wait.h>".}: cint
+    ## True if child exited normally.
+  WIFSIGNALED* {.importc, header: "<sys/wait.h>".}: cint
+    ## True if child exited due to uncaught signal.
+  WIFSTOPPED* {.importc, header: "<sys/wait.h>".}: cint
+    ## True if child is currently stopped.
+  WSTOPSIG* {.importc, header: "<sys/wait.h>".}: cint
+    ## Return signal number that caused process to stop.
+  WTERMSIG* {.importc, header: "<sys/wait.h>".}: cint
+    ## Return signal number that caused process to terminate.
+  WEXITED* {.importc, header: "<sys/wait.h>".}: cint
+    ## Wait for processes that have exited.
+  WSTOPPED* {.importc, header: "<sys/wait.h>".}: cint
+    ## Status is returned for any child that has stopped upon receipt of a signal.
+  WCONTINUED* {.importc, header: "<sys/wait.h>".}: cint
+    ## Status is returned for any child that was stopped and has been continued.
+  WNOWAIT* {.importc, header: "<sys/wait.h>".}: cint
+    ## Keep the process whose status is returned in infop in a waitable state. 
+  P_ALL* {.importc, header: "<sys/wait.h>".}: cint 
+  P_PID* {.importc, header: "<sys/wait.h>".}: cint 
+  P_PGID* {.importc, header: "<sys/wait.h>".}: cint
+       
+  SIG_DFL* {.importc, header: "<signal.h>".}: proc (x: cint) {.noconv.}
+    ## Request for default signal handling.
+  SIG_ERR* {.importc, header: "<signal.h>".}: proc (x: cint) {.noconv.}
+    ## Return value from signal() in case of error.
+  cSIG_HOLD* {.importc: "SIG_HOLD", header: "<signal.h>".}: proc (x: cint) {.noconv.}
+    ## Request that signal be held.
+  SIG_IGN* {.importc, header: "<signal.h>".}: proc (x: cint) {.noconv.}
+    ## Request that signal be ignored. 
+
+  SIGEV_NONE* {.importc, header: "<signal.h>".}: cint
+  SIGEV_SIGNAL* {.importc, header: "<signal.h>".}: cint
+  SIGEV_THREAD* {.importc, header: "<signal.h>".}: cint
+  SIGABRT* {.importc, header: "<signal.h>".}: cint
+  SIGALRM* {.importc, header: "<signal.h>".}: cint
+  SIGBUS* {.importc, header: "<signal.h>".}: cint
+  SIGCHLD* {.importc, header: "<signal.h>".}: cint
+  SIGCONT* {.importc, header: "<signal.h>".}: cint
+  SIGFPE* {.importc, header: "<signal.h>".}: cint
+  SIGHUP* {.importc, header: "<signal.h>".}: cint
+  SIGILL* {.importc, header: "<signal.h>".}: cint
+  SIGINT* {.importc, header: "<signal.h>".}: cint
+  SIGKILL* {.importc, header: "<signal.h>".}: cint
+  SIGPIPE* {.importc, header: "<signal.h>".}: cint
+  SIGQUIT* {.importc, header: "<signal.h>".}: cint
+  SIGSEGV* {.importc, header: "<signal.h>".}: cint
+  SIGSTOP* {.importc, header: "<signal.h>".}: cint
+  SIGTERM* {.importc, header: "<signal.h>".}: cint
+  SIGTSTP* {.importc, header: "<signal.h>".}: cint
+  SIGTTIN* {.importc, header: "<signal.h>".}: cint
+  SIGTTOU* {.importc, header: "<signal.h>".}: cint
+  SIGUSR1* {.importc, header: "<signal.h>".}: cint
+  SIGUSR2* {.importc, header: "<signal.h>".}: cint
+  SIGPOLL* {.importc, header: "<signal.h>".}: cint
+  SIGPROF* {.importc, header: "<signal.h>".}: cint
+  SIGSYS* {.importc, header: "<signal.h>".}: cint
+  SIGTRAP* {.importc, header: "<signal.h>".}: cint
+  SIGURG* {.importc, header: "<signal.h>".}: cint
+  SIGVTALRM* {.importc, header: "<signal.h>".}: cint
+  SIGXCPU* {.importc, header: "<signal.h>".}: cint
+  SIGXFSZ* {.importc, header: "<signal.h>".}: cint
+  SA_NOCLDSTOP* {.importc, header: "<signal.h>".}: cint
+  SIG_BLOCK* {.importc, header: "<signal.h>".}: cint
+  SIG_UNBLOCK* {.importc, header: "<signal.h>".}: cint
+  SIG_SETMASK* {.importc, header: "<signal.h>".}: cint
+  SA_ONSTACK* {.importc, header: "<signal.h>".}: cint
+  SA_RESETHAND* {.importc, header: "<signal.h>".}: cint
+  SA_RESTART* {.importc, header: "<signal.h>".}: cint
+  SA_SIGINFO* {.importc, header: "<signal.h>".}: cint
+  SA_NOCLDWAIT* {.importc, header: "<signal.h>".}: cint
+  SA_NODEFER* {.importc, header: "<signal.h>".}: cint
+  SS_ONSTACK* {.importc, header: "<signal.h>".}: cint
+  SS_DISABLE* {.importc, header: "<signal.h>".}: cint
+  MINSIGSTKSZ* {.importc, header: "<signal.h>".}: cint
+  SIGSTKSZ* {.importc, header: "<signal.h>".}: cint
+
+  NL_SETD* {.importc, header: "<nl_types.h>".}: cint
+  NL_CAT_LOCALE* {.importc, header: "<nl_types.h>".}: cint
+
+  SCHED_FIFO* {.importc, header: "<sched.h>".}: cint
+  SCHED_RR* {.importc, header: "<sched.h>".}: cint
+  SCHED_SPORADIC* {.importc, header: "<sched.h>".}: cint
+  SCHED_OTHER* {.importc, header: "<sched.h>".}: cint
+  FD_SETSIZE* {.importc, header: "<sys/select.h>".}: cint
+
+  SEEK_SET* {.importc, header: "<unistd.h>".}: cint
+  SEEK_CUR* {.importc, header: "<unistd.h>".}: cint
+  SEEK_END* {.importc, header: "<unistd.h>".}: cint
+
+  SCM_RIGHTS* {.importc, header: "<sys/socket.h>".}: cint
+    ## Indicates that the data array contains the access rights 
+    ## to be sent or received. 
+
+  SOCK_DGRAM* {.importc, header: "<sys/socket.h>".}: cint ## Datagram socket.
+  SOCK_RAW* {.importc, header: "<sys/socket.h>".}: cint
+    ## Raw Protocol Interface.
+  SOCK_SEQPACKET* {.importc, header: "<sys/socket.h>".}: cint
+    ## Sequenced-packet socket.
+  SOCK_STREAM* {.importc, header: "<sys/socket.h>".}: cint
+    ## Byte-stream socket. 
+    
+  SOL_SOCKET* {.importc, header: "<sys/socket.h>".}: cint
+    ## Options to be accessed at socket level, not protocol level. 
+    
+  SO_ACCEPTCONN* {.importc, header: "<sys/socket.h>".}: cint
+    ## Socket is accepting connections.
+  SO_BROADCAST* {.importc, header: "<sys/socket.h>".}: cint
+    ## Transmission of broadcast messages is supported.
+  SO_DEBUG* {.importc, header: "<sys/socket.h>".}: cint
+    ## Debugging information is being recorded.
+  SO_DONTROUTE* {.importc, header: "<sys/socket.h>".}: cint
+    ## Bypass normal routing.
+  SO_ERROR* {.importc, header: "<sys/socket.h>".}: cint
+    ## Socket error status.
+  SO_KEEPALIVE* {.importc, header: "<sys/socket.h>".}: cint
+    ## Connections are kept alive with periodic messages.
+  SO_LINGER* {.importc, header: "<sys/socket.h>".}: cint
+    ## Socket lingers on close.
+  SO_OOBINLINE* {.importc, header: "<sys/socket.h>".}: cint
+    ## Out-of-band data is transmitted in line.
+  SO_RCVBUF* {.importc, header: "<sys/socket.h>".}: cint
+    ## Receive buffer size.
+  SO_RCVLOWAT* {.importc, header: "<sys/socket.h>".}: cint
+    ## Receive *low water mark*.
+  SO_RCVTIMEO* {.importc, header: "<sys/socket.h>".}: cint
+    ## Receive timeout.
+  SO_REUSEADDR* {.importc, header: "<sys/socket.h>".}: cint
+    ## Reuse of local addresses is supported.
+  SO_SNDBUF* {.importc, header: "<sys/socket.h>".}: cint
+    ## Send buffer size.
+  SO_SNDLOWAT* {.importc, header: "<sys/socket.h>".}: cint
+    ## Send *low water mark*.
+  SO_SNDTIMEO* {.importc, header: "<sys/socket.h>".}: cint
+    ## Send timeout.
+  SO_TYPE* {.importc, header: "<sys/socket.h>".}: cint
+    ## Socket type. 
+      
+  SOMAXCONN* {.importc, header: "<sys/socket.h>".}: cint
+    ## The maximum backlog queue length. 
+    
+  MSG_CTRUNC* {.importc, header: "<sys/socket.h>".}: cint
+    ## Control data truncated.
+  MSG_DONTROUTE* {.importc, header: "<sys/socket.h>".}: cint
+    ## Send without using routing tables.
+  MSG_EOR* {.importc, header: "<sys/socket.h>".}: cint
+    ## Terminates a record (if supported by the protocol).
+  MSG_OOB* {.importc, header: "<sys/socket.h>".}: cint
+    ## Out-of-band data.
+  MSG_PEEK* {.importc, header: "<sys/socket.h>".}: cint
+    ## Leave received data in queue.
+  MSG_TRUNC* {.importc, header: "<sys/socket.h>".}: cint
+    ## Normal data truncated.
+  MSG_WAITALL* {.importc, header: "<sys/socket.h>".}: cint
+    ## Attempt to fill the read buffer. 
+
+  AF_INET* {.importc, header: "<sys/socket.h>".}: cint
+    ## Internet domain sockets for use with IPv4 addresses.
+  AF_INET6* {.importc, header: "<sys/socket.h>".}: cint
+    ## Internet domain sockets for use with IPv6 addresses.
+  AF_UNIX* {.importc, header: "<sys/socket.h>".}: cint
+    ## UNIX domain sockets.
+  AF_UNSPEC* {.importc, header: "<sys/socket.h>".}: cint
+    ## Unspecified. 
+
+  SHUT_RD* {.importc, header: "<sys/socket.h>".}: cint
+    ## Disables further receive operations.
+  SHUT_RDWR* {.importc, header: "<sys/socket.h>".}: cint
+    ## Disables further send and receive operations.
+  SHUT_WR* {.importc, header: "<sys/socket.h>".}: cint
+    ## Disables further send operations. 
+
+  IF_NAMESIZE* {.importc, header: "<net/if.h>".}: cint
+    
+  IPPROTO_IP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Internet protocol.
+  IPPROTO_IPV6* {.importc, header: "<netinet/in.h>".}: cint
+    ## Internet Protocol Version 6.
+  IPPROTO_ICMP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Control message protocol.
+  IPPROTO_RAW* {.importc, header: "<netinet/in.h>".}: cint
+    ## Raw IP Packets Protocol. 
+  IPPROTO_TCP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Transmission control protocol.
+  IPPROTO_UDP* {.importc, header: "<netinet/in.h>".}: cint
+    ## User datagram protocol.
+
+  INADDR_ANY* {.importc, header: "<netinet/in.h>".}: TinAddrScalar
+    ## IPv4 local host address.
+  INADDR_BROADCAST* {.importc, header: "<netinet/in.h>".}: TinAddrScalar
+    ## IPv4 broadcast address.
+
+  INET_ADDRSTRLEN* {.importc, header: "<netinet/in.h>".}: cint
+    ## 16. Length of the string form for IP. 
+
+  IPV6_JOIN_GROUP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Join a multicast group.
+  IPV6_LEAVE_GROUP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Quit a multicast group.
+  IPV6_MULTICAST_HOPS* {.importc, header: "<netinet/in.h>".}: cint
+    ## Multicast hop limit.
+  IPV6_MULTICAST_IF* {.importc, header: "<netinet/in.h>".}: cint
+    ## Interface to use for outgoing multicast packets.
+  IPV6_MULTICAST_LOOP* {.importc, header: "<netinet/in.h>".}: cint
+    ## Multicast packets are delivered back to the local application.
+  IPV6_UNICAST_HOPS* {.importc, header: "<netinet/in.h>".}: cint
+    ## Unicast hop limit.
+  IPV6_V6ONLY* {.importc, header: "<netinet/in.h>".}: cint
+    ## Restrict AF_INET6 socket to IPv6 communications only.
+
+  TCP_NODELAY* {.importc, header: "<netinet/tcp.h>".}: cint
+    ## Avoid coalescing of small segments. 
+
+  IPPORT_RESERVED* {.importc, header: "<netdb.h>".}: cint 
+
+  HOST_NOT_FOUND* {.importc, header: "<netdb.h>".}: cint 
+  NO_DATA* {.importc, header: "<netdb.h>".}: cint 
+  NO_RECOVERY* {.importc, header: "<netdb.h>".}: cint 
+  TRY_AGAIN* {.importc, header: "<netdb.h>".}: cint 
+
+  AI_PASSIVE* {.importc, header: "<netdb.h>".}: cint 
+    ## Socket address is intended for bind().
+  AI_CANONNAME* {.importc, header: "<netdb.h>".}: cint 
+    ## Request for canonical name.
+  AI_NUMERICHOST* {.importc, header: "<netdb.h>".}: cint 
+    ## Return numeric host address as name.
+  AI_NUMERICSERV* {.importc, header: "<netdb.h>".}: cint 
+    ## Inhibit service name resolution.
+  AI_V4MAPPED* {.importc, header: "<netdb.h>".}: cint 
+     ## If no IPv6 addresses are found, query for IPv4 addresses and
+     ## return them to the caller as IPv4-mapped IPv6 addresses.
+  AI_ALL* {.importc, header: "<netdb.h>".}: cint 
+    ## Query for both IPv4 and IPv6 addresses.
+  AI_ADDRCONFIG* {.importc, header: "<netdb.h>".}: cint 
+    ## Query for IPv4 addresses only when an IPv4 address is configured; 
+    ## query for IPv6 addresses only when an IPv6 address is configured.
+
+  NI_NOFQDN* {.importc, header: "<netdb.h>".}: cint 
+    ## Only the nodename portion of the FQDN is returned for local hosts.
+  NI_NUMERICHOST* {.importc, header: "<netdb.h>".}: cint 
+    ## The numeric form of the node's address is returned instead of its name.
+  NI_NAMEREQD* {.importc, header: "<netdb.h>".}: cint 
+    ## Return an error if the node's name cannot be located in the database.
+  NI_NUMERICSERV* {.importc, header: "<netdb.h>".}: cint 
+    ## The numeric form of the service address is returned instead of its name.
+  NI_NUMERICSCOPE* {.importc, header: "<netdb.h>".}: cint 
+    ## For IPv6 addresses, the numeric form of the scope identifier is
+    ## returned instead of its name.
+  NI_DGRAM* {.importc, header: "<netdb.h>".}: cint 
+    ## Indicates that the service is a datagram service (SOCK_DGRAM). 
+
+  EAI_AGAIN* {.importc, header: "<netdb.h>".}: cint 
+    ## The name could not be resolved at this time. Future attempts may succeed.
+  EAI_BADFLAGS* {.importc, header: "<netdb.h>".}: cint 
+    ## The flags had an invalid value.
+  EAI_FAIL* {.importc, header: "<netdb.h>".}: cint 
+    ## A non-recoverable error occurred.
+  EAI_FAMILY* {.importc, header: "<netdb.h>".}: cint 
+    ## The address family was not recognized or the address length 
+    ## was invalid for the specified family.
+  EAI_MEMORY* {.importc, header: "<netdb.h>".}: cint 
+    ## There was a memory allocation failure.
+  EAI_NONAME* {.importc, header: "<netdb.h>".}: cint 
+    ## The name does not resolve for the supplied parameters.
+    ## NI_NAMEREQD is set and the host's name cannot be located, 
+    ## or both nodename and servname were null.
+  EAI_SERVICE* {.importc, header: "<netdb.h>".}: cint 
+    ## The service passed was not recognized for the specified socket type.
+  EAI_SOCKTYPE* {.importc, header: "<netdb.h>".}: cint 
+    ## The intended socket type was not recognized.
+  EAI_SYSTEM* {.importc, header: "<netdb.h>".}: cint 
+    ## A system error occurred. The error code can be found in errno.
+  EAI_OVERFLOW* {.importc, header: "<netdb.h>".}: cint 
+    ## An argument buffer overflowed.
+
+  POLLIN* {.importc, header: "<poll.h>".}: cshort
+    ## Data other than high-priority data may be read without blocking.
+  POLLRDNORM* {.importc, header: "<poll.h>".}: cshort
+    ## Normal data may be read without blocking.
+  POLLRDBAND* {.importc, header: "<poll.h>".}: cshort
+    ## Priority data may be read without blocking.
+  POLLPRI* {.importc, header: "<poll.h>".}: cshort
+    ## High priority data may be read without blocking.
+  POLLOUT* {.importc, header: "<poll.h>".}: cshort
+    ## Normal data may be written without blocking.
+  POLLWRNORM* {.importc, header: "<poll.h>".}: cshort
+    ## Equivalent to POLLOUT.
+  POLLWRBAND* {.importc, header: "<poll.h>".}: cshort
+    ## Priority data may be written.
+  POLLERR* {.importc, header: "<poll.h>".}: cshort
+    ## An error has occurred (revents only).
+  POLLHUP* {.importc, header: "<poll.h>".}: cshort
+    ## Device has been disconnected (revents only).
+  POLLNVAL* {.importc, header: "<poll.h>".}: cshort
+    ## Invalid fd member (revents only). 
+
+
+when hasSpawnh:
+  var
+    POSIX_SPAWN_RESETIDS* {.importc, header: "<spawn.h>".}: cint
+    POSIX_SPAWN_SETPGROUP* {.importc, header: "<spawn.h>".}: cint
+    POSIX_SPAWN_SETSCHEDPARAM* {.importc, header: "<spawn.h>".}: cint
+    POSIX_SPAWN_SETSCHEDULER* {.importc, header: "<spawn.h>".}: cint
+    POSIX_SPAWN_SETSIGDEF* {.importc, header: "<spawn.h>".}: cint
+    POSIX_SPAWN_SETSIGMASK* {.importc, header: "<spawn.h>".}: cint
+
+when hasAioH:
+  proc aio_cancel*(a1: cint, a2: ptr Taiocb): cint {.importc, header: "<aio.h>".}
+  proc aio_error*(a1: ptr Taiocb): cint {.importc, header: "<aio.h>".}
+  proc aio_fsync*(a1: cint, a2: ptr Taiocb): cint {.importc, header: "<aio.h>".}
+  proc aio_read*(a1: ptr Taiocb): cint {.importc, header: "<aio.h>".}
+  proc aio_return*(a1: ptr Taiocb): int {.importc, header: "<aio.h>".}
+  proc aio_suspend*(a1: ptr ptr Taiocb, a2: cint, a3: ptr ttimespec): cint {.
+                   importc, header: "<aio.h>".}
+  proc aio_write*(a1: ptr Taiocb): cint {.importc, header: "<aio.h>".}
+  proc lio_listio*(a1: cint, a2: ptr ptr Taiocb, a3: cint,
+               a4: ptr Tsigevent): cint {.importc, header: "<aio.h>".}
+
+# arpa/inet.h
+proc htonl*(a1: int32): int32 {.importc, header: "<arpa/inet.h>".}
+proc htons*(a1: int16): int16 {.importc, header: "<arpa/inet.h>".}
+proc ntohl*(a1: int32): int32 {.importc, header: "<arpa/inet.h>".}
+proc ntohs*(a1: int16): int16 {.importc, header: "<arpa/inet.h>".}
+
+proc inet_addr*(a1: cstring): int32 {.importc, header: "<arpa/inet.h>".}
+proc inet_ntoa*(a1: int32): cstring {.importc, header: "<arpa/inet.h>".}
+proc inet_ntop*(a1: cint, a2: pointer, a3: cstring, a4: int32): cstring {.importc, header: "<arpa/inet.h>".}
+proc inet_pton*(a1: cint, a2: cstring, a3: pointer): cint {.importc, header: "<arpa/inet.h>".}
+
+var
+  in6addr_any* {.importc, header: "<netinet/in.h>".}: TIn6Addr
+  in6addr_loopback* {.importc, header: "<netinet/in.h>".}: TIn6Addr
+
+proc IN6ADDR_ANY_INIT* (): TIn6Addr {.importc, header: "<netinet/in.h>".}
+proc IN6ADDR_LOOPBACK_INIT* (): TIn6Addr {.importc, header: "<netinet/in.h>".}
+
+# dirent.h
+proc closedir*(a1: ptr TDIR): cint  {.importc, header: "<dirent.h>".}
+proc opendir*(a1: cstring): ptr TDir {.importc, header: "<dirent.h>".}
+proc readdir*(a1: ptr TDIR): ptr TDirent  {.importc, header: "<dirent.h>".}
+proc readdir_r*(a1: ptr TDIR, a2: ptr Tdirent, a3: ptr ptr TDirent): cint  {.
+                importc, header: "<dirent.h>".}
+proc rewinddir*(a1: ptr TDIR)  {.importc, header: "<dirent.h>".}
+proc seekdir*(a1: ptr TDIR, a2: int)  {.importc, header: "<dirent.h>".}
+proc telldir*(a1: ptr TDIR): int {.importc, header: "<dirent.h>".}
+
+# dlfcn.h
+proc dlclose*(a1: pointer): cint {.importc, header: "<dlfcn.h>".}
+proc dlerror*(): cstring {.importc, header: "<dlfcn.h>".}
+proc dlopen*(a1: cstring, a2: cint): pointer {.importc, header: "<dlfcn.h>".}
+proc dlsym*(a1: pointer, a2: cstring): pointer {.importc, header: "<dlfcn.h>".}
+
+proc creat*(a1: cstring, a2: Tmode): cint {.importc, header: "<fcntl.h>".}
+proc fcntl*(a1: cint, a2: cint): cint {.varargs, importc, header: "<fcntl.h>".}
+proc open*(a1: cstring, a2: cint): cint {.varargs, importc, header: "<fcntl.h>".}
+proc posix_fadvise*(a1: cint, a2, a3: Toff, a4: cint): cint {.importc, header: "<fcntl.h>".}
+proc posix_fallocate*(a1: cint, a2, a3: Toff): cint {.importc, header: "<fcntl.h>".}
+
+proc feclearexcept*(a1: cint): cint {.importc, header: "<fenv.h>".}
+proc fegetexceptflag*(a1: ptr Tfexcept, a2: cint): cint {.importc, header: "<fenv.h>".}
+proc feraiseexcept*(a1: cint): cint {.importc, header: "<fenv.h>".}
+proc fesetexceptflag*(a1: ptr Tfexcept, a2: cint): cint {.importc, header: "<fenv.h>".}
+proc fetestexcept*(a1: cint): cint {.importc, header: "<fenv.h>".}
+proc fegetround*(): cint {.importc, header: "<fenv.h>".}
+proc fesetround*(a1: cint): cint {.importc, header: "<fenv.h>".}
+proc fegetenv*(a1: ptr Tfenv): cint {.importc, header: "<fenv.h>".}
+proc feholdexcept*(a1: ptr Tfenv): cint {.importc, header: "<fenv.h>".}
+proc fesetenv*(a1: ptr Tfenv): cint {.importc, header: "<fenv.h>".}
+proc feupdateenv*(a1: ptr TFenv): cint {.importc, header: "<fenv.h>".}
+
+proc fmtmsg*(a1: int, a2: cstring, a3: cint,
+            a4, a5, a6: cstring): cint {.importc, header: "<fmtmsg.h>".}
+            
+proc fnmatch*(a1, a2: cstring, a3: cint): cint {.importc, header: "<fnmatch.h>".}
+proc ftw*(a1: cstring, 
+         a2: proc (x1: cstring, x2: ptr TStat, x3: cint): cint {.noconv.},
+         a3: cint): cint {.importc, header: "<ftw.h>".}
+proc nftw*(a1: cstring, 
+          a2: proc (x1: cstring, x2: ptr TStat, x3: cint, x4: ptr TFTW): cint {.noconv.},
+          a3: cint,
+          a4: cint): cint {.importc, header: "<ftw.h>".}
+
+proc glob*(a1: cstring, a2: cint,
+          a3: proc (x1: cstring, x2: cint): cint {.noconv.},
+          a4: ptr Tglob): cint {.importc, header: "<glob.h>".}
+proc globfree*(a1: ptr TGlob) {.importc, header: "<glob.h>".}
+
+proc getgrgid*(a1: TGid): ptr TGroup {.importc, header: "<grp.h>".}
+proc getgrnam*(a1: cstring): ptr TGroup {.importc, header: "<grp.h>".}
+proc getgrgid_r*(a1: Tgid, a2: ptr TGroup, a3: cstring, a4: int,
+                 a5: ptr ptr TGroup): cint {.importc, header: "<grp.h>".}
+proc getgrnam_r*(a1: cstring, a2: ptr TGroup, a3: cstring, 
+                  a4: int, a5: ptr ptr TGroup): cint {.importc, header: "<grp.h>".}
+proc getgrent*(): ptr TGroup {.importc, header: "<grp.h>".}
+proc endgrent*() {.importc, header: "<grp.h>".}
+proc setgrent*() {.importc, header: "<grp.h>".}
+
+
+proc iconv_open*(a1, a2: cstring): TIconv {.importc, header: "<iconv.h>".}
+proc iconv*(a1: Ticonv, a2: var cstring, a3: var int, a4: var cstring,
+            a5: var int): int {.importc, header: "<iconv.h>".}
+proc iconv_close*(a1: Ticonv): cint {.importc, header: "<iconv.h>".}
+
+proc nl_langinfo*(a1: Tnl_item): cstring {.importc, header: "<langinfo.h>".}
+
+proc basename*(a1: cstring): cstring {.importc, header: "<libgen.h>".}
+proc dirname*(a1: cstring): cstring {.importc, header: "<libgen.h>".}
+
+proc localeconv*(): ptr Tlconv {.importc, header: "<locale.h>".}
+proc setlocale*(a1: cint, a2: cstring): cstring {.
+                importc, header: "<locale.h>".}
+
+proc strfmon*(a1: cstring, a2: int, a3: cstring): int {.varargs,
+   importc, header: "<monetary.h>".}
+
+proc mq_close*(a1: Tmqd): cint {.importc, header: "<mqueue.h>".}
+proc mq_getattr*(a1: Tmqd, a2: ptr Tmq_attr): cint {.importc, header: "<mqueue.h>".}
+proc mq_notify*(a1: Tmqd, a2: ptr Tsigevent): cint {.importc, header: "<mqueue.h>".}
+proc mq_open*(a1: cstring, a2: cint): TMqd {.varargs, importc, header: "<mqueue.h>".}
+proc mq_receive*(a1: Tmqd, a2: cstring, a3: int, a4: var int): int {.importc, header: "<mqueue.h>".}
+proc mq_send*(a1: Tmqd, a2: cstring, a3: int, a4: int): cint {.importc, header: "<mqueue.h>".}
+proc mq_setattr*(a1: Tmqd, a2, a3: ptr Tmq_attr): cint {.importc, header: "<mqueue.h>".}
+
+proc mq_timedreceive*(a1: Tmqd, a2: cstring, a3: int, a4: int, 
+                      a5: ptr TTimespec): int {.importc, header: "<mqueue.h>".}
+proc mq_timedsend*(a1: Tmqd, a2: cstring, a3: int, a4: int, 
+                   a5: ptr TTimeSpec): cint {.importc, header: "<mqueue.h>".}
+proc mq_unlink*(a1: cstring): cint {.importc, header: "<mqueue.h>".}
+
+
+proc getpwnam*(a1: cstring): ptr TPasswd {.importc, header: "<pwd.h>".}
+proc getpwuid*(a1: Tuid): ptr TPasswd {.importc, header: "<pwd.h>".}
+proc getpwnam_r*(a1: cstring, a2: ptr Tpasswd, a3: cstring, a4: int,
+                 a5: ptr ptr Tpasswd): cint {.importc, header: "<pwd.h>".}
+proc getpwuid_r*(a1: Tuid, a2: ptr Tpasswd, a3: cstring,
+      a4: int, a5: ptr ptr Tpasswd): cint {.importc, header: "<pwd.h>".}
+proc endpwent*() {.importc, header: "<pwd.h>".}
+proc getpwent*(): ptr TPasswd {.importc, header: "<pwd.h>".}
+proc setpwent*() {.importc, header: "<pwd.h>".}
+
+proc uname*(a1: var Tutsname): cint {.importc, header: "<sys/utsname.h>".}
+
+proc pthread_atfork*(a1, a2, a3: proc {.noconv.}): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_destroy*(a1: ptr Tpthread_attr): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getdetachstate*(a1: ptr Tpthread_attr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getguardsize*(a1: ptr Tpthread_attr, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getinheritsched*(a1: ptr Tpthread_attr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getschedparam*(a1: ptr Tpthread_attr,
+          a2: ptr Tsched_param): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getschedpolicy*(a1: ptr Tpthread_attr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getscope*(a1: ptr Tpthread_attr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getstack*(a1: ptr Tpthread_attr,
+         a2: var pointer, a3: var int): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getstackaddr*(a1: ptr Tpthread_attr,
+          a2: var pointer): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_getstacksize*(a1: ptr Tpthread_attr,
+          a2: var int): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_init*(a1: ptr Tpthread_attr): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setdetachstate*(a1: ptr Tpthread_attr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setguardsize*(a1: ptr Tpthread_attr, a2: int): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setinheritsched*(a1: ptr Tpthread_attr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setschedparam*(a1: ptr Tpthread_attr,
+          a2: ptr Tsched_param): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setschedpolicy*(a1: ptr Tpthread_attr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setscope*(a1: ptr Tpthread_attr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setstack*(a1: ptr Tpthread_attr, a2: pointer, a3: int): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setstackaddr*(a1: ptr TPthread_attr, a2: pointer): cint {.importc, header: "<pthread.h>".}
+proc pthread_attr_setstacksize*(a1: ptr TPthread_attr, a2: int): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrier_destroy*(a1: ptr Tpthread_barrier): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrier_init*(a1: ptr Tpthread_barrier,
+         a2: ptr Tpthread_barrierattr, a3: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrier_wait*(a1: ptr Tpthread_barrier): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrierattr_destroy*(a1: ptr Tpthread_barrierattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrierattr_getpshared*(
+          a1: ptr Tpthread_barrierattr, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrierattr_init*(a1: ptr TPthread_barrierattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_barrierattr_setpshared*(a1: ptr TPthread_barrierattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_cancel*(a1: Tpthread): cint {.importc, header: "<pthread.h>".}
+proc pthread_cleanup_push*(a1: proc (x: pointer) {.noconv.}, a2: pointer) {.importc, header: "<pthread.h>".}
+proc pthread_cleanup_pop*(a1: cint) {.importc, header: "<pthread.h>".}
+proc pthread_cond_broadcast*(a1: ptr Tpthread_cond): cint {.importc, header: "<pthread.h>".}
+proc pthread_cond_destroy*(a1: ptr Tpthread_cond): cint {.importc, header: "<pthread.h>".}
+proc pthread_cond_init*(a1: ptr Tpthread_cond,
+          a2: ptr Tpthread_condattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_cond_signal*(a1: ptr Tpthread_cond): cint {.importc, header: "<pthread.h>".}
+proc pthread_cond_timedwait*(a1: ptr Tpthread_cond,
+          a2: ptr Tpthread_mutex, a3: ptr Ttimespec): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_cond_wait*(a1: ptr Tpthread_cond,
+          a2: ptr Tpthread_mutex): cint {.importc, header: "<pthread.h>".}
+proc pthread_condattr_destroy*(a1: ptr Tpthread_condattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_condattr_getclock*(a1: ptr Tpthread_condattr,
+          a2: var Tclockid): cint {.importc, header: "<pthread.h>".}
+proc pthread_condattr_getpshared*(a1: ptr Tpthread_condattr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+          
+proc pthread_condattr_init*(a1: ptr TPthread_condattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_condattr_setclock*(a1: ptr TPthread_condattr,a2: Tclockid): cint {.importc, header: "<pthread.h>".}
+proc pthread_condattr_setpshared*(a1: ptr TPthread_condattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_create*(a1: ptr Tpthread, a2: ptr Tpthread_attr,
+          a3: proc (x: pointer): pointer {.noconv.}, a4: pointer): cint {.importc, header: "<pthread.h>".}
+proc pthread_detach*(a1: Tpthread): cint {.importc, header: "<pthread.h>".}
+proc pthread_equal*(a1, a2: Tpthread): cint {.importc, header: "<pthread.h>".}
+proc pthread_exit*(a1: pointer) {.importc, header: "<pthread.h>".}
+proc pthread_getconcurrency*(): cint {.importc, header: "<pthread.h>".}
+proc pthread_getcpuclockid*(a1: Tpthread, a2: var Tclockid): cint {.importc, header: "<pthread.h>".}
+proc pthread_getschedparam*(a1: Tpthread,  a2: var cint,
+          a3: ptr Tsched_param): cint {.importc, header: "<pthread.h>".}
+proc pthread_getspecific*(a1: Tpthread_key): pointer {.importc, header: "<pthread.h>".}
+proc pthread_join*(a1: Tpthread, a2: ptr pointer): cint {.importc, header: "<pthread.h>".}
+proc pthread_key_create*(a1: ptr Tpthread_key, a2: proc (x: pointer) {.noconv.}): cint {.importc, header: "<pthread.h>".}
+proc pthread_key_delete*(a1: Tpthread_key): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_mutex_destroy*(a1: ptr Tpthread_mutex): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_getprioceiling*(a1: ptr Tpthread_mutex,
+         a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_init*(a1: ptr Tpthread_mutex,
+          a2: ptr Tpthread_mutexattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_lock*(a1: ptr Tpthread_mutex): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_setprioceiling*(a1: ptr Tpthread_mutex,a2: cint,
+          a3: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_timedlock*(a1: ptr Tpthread_mutex,
+          a2: ptr Ttimespec): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_trylock*(a1: ptr Tpthread_mutex): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutex_unlock*(a1: ptr Tpthread_mutex): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_destroy*(a1: ptr Tpthread_mutexattr): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_mutexattr_getprioceiling*(
+          a1: ptr Tpthread_mutexattr, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_getprotocol*(a1: ptr Tpthread_mutexattr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_getpshared*(a1: ptr Tpthread_mutexattr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_gettype*(a1: ptr Tpthread_mutexattr,
+          a2: var cint): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_mutexattr_init*(a1: ptr Tpthread_mutexattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_setprioceiling*(a1: ptr tpthread_mutexattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_setprotocol*(a1: ptr Tpthread_mutexattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_setpshared*(a1: ptr Tpthread_mutexattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_mutexattr_settype*(a1: ptr Tpthread_mutexattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_once*(a1: ptr Tpthread_once, a2: proc {.noconv.}): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_rwlock_destroy*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_init*(a1: ptr Tpthread_rwlock,
+          a2: ptr Tpthread_rwlockattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_rdlock*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_timedrdlock*(a1: ptr Tpthread_rwlock,
+          a2: ptr Ttimespec): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_timedwrlock*(a1: ptr Tpthread_rwlock,
+          a2: ptr Ttimespec): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_rwlock_tryrdlock*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_trywrlock*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_unlock*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlock_wrlock*(a1: ptr Tpthread_rwlock): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlockattr_destroy*(a1: ptr Tpthread_rwlockattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlockattr_getpshared*(
+          a1: ptr Tpthread_rwlockattr, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlockattr_init*(a1: ptr Tpthread_rwlockattr): cint {.importc, header: "<pthread.h>".}
+proc pthread_rwlockattr_setpshared*(a1: ptr Tpthread_rwlockattr, a2: cint): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_self*(): Tpthread {.importc, header: "<pthread.h>".}
+proc pthread_setcancelstate*(a1: cint, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_setcanceltype*(a1: cint, a2: var cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_setconcurrency*(a1: cint): cint {.importc, header: "<pthread.h>".}
+proc pthread_setschedparam*(a1: Tpthread, a2: cint,
+          a3: ptr Tsched_param): cint {.importc, header: "<pthread.h>".}
+
+proc pthread_setschedprio*(a1: Tpthread, a2: cint): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_setspecific*(a1: Tpthread_key, a2: pointer): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_spin_destroy*(a1: ptr Tpthread_spinlock): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_spin_init*(a1: ptr Tpthread_spinlock, a2: cint): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_spin_lock*(a1: ptr Tpthread_spinlock): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_spin_trylock*(a1: ptr Tpthread_spinlock): cint{.
+  importc, header: "<pthread.h>".}
+proc pthread_spin_unlock*(a1: ptr Tpthread_spinlock): cint {.
+  importc, header: "<pthread.h>".}
+proc pthread_testcancel*() {.importc, header: "<pthread.h>".}
+
+
+proc access*(a1: cstring, a2: cint): cint {.importc, header: "<unistd.h>".}
+proc alarm*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc chdir*(a1: cstring): cint {.importc, header: "<unistd.h>".}
+proc chown*(a1: cstring, a2: Tuid, a3: Tgid): cint {.importc, header: "<unistd.h>".}
+proc close*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc confstr*(a1: cint, a2: cstring, a3: int): int {.importc, header: "<unistd.h>".}
+proc crypt*(a1, a2: cstring): cstring {.importc, header: "<unistd.h>".}
+proc ctermid*(a1: cstring): cstring {.importc, header: "<unistd.h>".}
+proc dup*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc dup2*(a1, a2: cint): cint {.importc, header: "<unistd.h>".}
+proc encrypt*(a1: array[0..63, char], a2: cint) {.importc, header: "<unistd.h>".}
+
+proc execl*(a1, a2: cstring): cint {.varargs, importc, header: "<unistd.h>".}
+proc execle*(a1, a2: cstring): cint {.varargs, importc, header: "<unistd.h>".}
+proc execlp*(a1, a2: cstring): cint {.varargs, importc, header: "<unistd.h>".}
+proc execv*(a1: cstring, a2: cstringArray): cint {.importc, header: "<unistd.h>".}
+proc execve*(a1: cstring, a2, a3: cstringArray): cint {.
+  importc, header: "<unistd.h>".}
+proc execvp*(a1: cstring, a2: cstringArray): cint {.importc, header: "<unistd.h>".}
+proc fchown*(a1: cint, a2: Tuid, a3: Tgid): cint {.importc, header: "<unistd.h>".}
+proc fchdir*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc fdatasync*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc fork*(): Tpid {.importc, header: "<unistd.h>".}
+proc fpathconf*(a1, a2: cint): int {.importc, header: "<unistd.h>".}
+proc fsync*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc ftruncate*(a1: cint, a2: Toff): cint {.importc, header: "<unistd.h>".}
+proc getcwd*(a1: cstring, a2: int): cstring {.importc, header: "<unistd.h>".}
+proc getegid*(): TGid {.importc, header: "<unistd.h>".}
+proc geteuid*(): TUid {.importc, header: "<unistd.h>".}
+proc getgid*(): TGid {.importc, header: "<unistd.h>".}
+
+proc getgroups*(a1: cint, a2: ptr array[0..255, Tgid]): cint {.
+  importc, header: "<unistd.h>".}
+proc gethostid*(): int {.importc, header: "<unistd.h>".}
+proc gethostname*(a1: cstring, a2: int): cint {.importc, header: "<unistd.h>".}
+proc getlogin*(): cstring {.importc, header: "<unistd.h>".}
+proc getlogin_r*(a1: cstring, a2: int): cint {.importc, header: "<unistd.h>".}
+
+proc getopt*(a1: cint, a2: cstringArray, a3: cstring): cint {.
+  importc, header: "<unistd.h>".}
+proc getpgid*(a1: Tpid): Tpid {.importc, header: "<unistd.h>".}
+proc getpgrp*(): Tpid {.importc, header: "<unistd.h>".}
+proc getpid*(): Tpid {.importc, header: "<unistd.h>".}
+proc getppid*(): Tpid {.importc, header: "<unistd.h>".}
+proc getsid*(a1: Tpid): Tpid {.importc, header: "<unistd.h>".}
+proc getuid*(): Tuid {.importc, header: "<unistd.h>".}
+proc getwd*(a1: cstring): cstring {.importc, header: "<unistd.h>".}
+proc isatty*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc lchown*(a1: cstring, a2: Tuid, a3: Tgid): cint {.importc, header: "<unistd.h>".}
+proc link*(a1, a2: cstring): cint {.importc, header: "<unistd.h>".}
+
+proc lockf*(a1, a2: cint, a3: Toff): cint {.importc, header: "<unistd.h>".}
+proc lseek*(a1: cint, a2: Toff, a3: cint): Toff {.importc, header: "<unistd.h>".}
+proc nice*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc pathconf*(a1: cstring, a2: cint): int {.importc, header: "<unistd.h>".}
+
+proc pause*(): cint {.importc, header: "<unistd.h>".}
+proc pipe*(a: array[0..1, cint]): cint {.importc, header: "<unistd.h>".}
+proc pread*(a1: cint, a2: pointer, a3: int, a4: Toff): int {.
+  importc, header: "<unistd.h>".}
+proc pwrite*(a1: cint, a2: pointer, a3: int, a4: Toff): int {.
+  importc, header: "<unistd.h>".}
+proc read*(a1: cint, a2: pointer, a3: int): int {.importc, header: "<unistd.h>".}
+proc readlink*(a1, a2: cstring, a3: int): int {.importc, header: "<unistd.h>".}
+
+proc rmdir*(a1: cstring): cint {.importc, header: "<unistd.h>".}
+proc setegid*(a1: Tgid): cint {.importc, header: "<unistd.h>".}
+proc seteuid*(a1: Tuid): cint {.importc, header: "<unistd.h>".}
+proc setgid*(a1: Tgid): cint {.importc, header: "<unistd.h>".}
+
+proc setpgid*(a1, a2: Tpid): cint {.importc, header: "<unistd.h>".}
+proc setpgrp*(): Tpid {.importc, header: "<unistd.h>".}
+proc setregid*(a1, a2: Tgid): cint {.importc, header: "<unistd.h>".}
+proc setreuid*(a1, a2: Tuid): cint {.importc, header: "<unistd.h>".}
+proc setsid*(): Tpid {.importc, header: "<unistd.h>".}
+proc setuid*(a1: Tuid): cint {.importc, header: "<unistd.h>".}
+proc sleep*(a1: cint): cint {.importc, header: "<unistd.h>".}
+proc swab*(a1, a2: pointer, a3: int) {.importc, header: "<unistd.h>".}
+proc symlink*(a1, a2: cstring): cint {.importc, header: "<unistd.h>".}
+proc sync*() {.importc, header: "<unistd.h>".}
+proc sysconf*(a1: cint): int {.importc, header: "<unistd.h>".}
+proc tcgetpgrp*(a1: cint): tpid {.importc, header: "<unistd.h>".}
+proc tcsetpgrp*(a1: cint, a2: Tpid): cint {.importc, header: "<unistd.h>".}
+proc truncate*(a1: cstring, a2: Toff): cint {.importc, header: "<unistd.h>".}
+proc ttyname*(a1: cint): cstring {.importc, header: "<unistd.h>".}
+proc ttyname_r*(a1: cint, a2: cstring, a3: int): cint {.
+  importc, header: "<unistd.h>".}
+proc ualarm*(a1, a2: Tuseconds): Tuseconds {.importc, header: "<unistd.h>".}
+proc unlink*(a1: cstring): cint {.importc, header: "<unistd.h>".}
+proc usleep*(a1: Tuseconds): cint {.importc, header: "<unistd.h>".}
+proc vfork*(): tpid {.importc, header: "<unistd.h>".}
+proc write*(a1: cint, a2: pointer, a3: int): int {.importc, header: "<unistd.h>".}
+
+proc sem_close*(a1: ptr Tsem): cint {.importc, header: "<semaphore.h>".}
+proc sem_destroy*(a1: ptr Tsem): cint {.importc, header: "<semaphore.h>".}
+proc sem_getvalue*(a1: ptr Tsem, a2: var cint): cint {.
+  importc, header: "<semaphore.h>".}
+proc sem_init*(a1: ptr Tsem, a2: cint, a3: cint): cint {.
+  importc, header: "<semaphore.h>".}
+proc sem_open*(a1: cstring, a2: cint): ptr TSem {.
+  varargs, importc, header: "<semaphore.h>".}
+proc sem_post*(a1: ptr Tsem): cint {.importc, header: "<semaphore.h>".}
+proc sem_timedwait*(a1: ptr Tsem, a2: ptr Ttimespec): cint {.
+  importc, header: "<semaphore.h>".}
+proc sem_trywait*(a1: ptr Tsem): cint {.importc, header: "<semaphore.h>".}
+proc sem_unlink*(a1: cstring): cint {.importc, header: "<semaphore.h>".}
+proc sem_wait*(a1: ptr Tsem): cint {.importc, header: "<semaphore.h>".}
+
+proc ftok*(a1: cstring, a2: cint): Tkey {.importc, header: "<sys/ipc.h>".}
+
+proc statvfs*(a1: cstring, a2: var Tstatvfs): cint {.
+  importc, header: "<sys/statvfs.h>".}
+proc fstatvfs*(a1: cint, a2: var Tstatvfs): cint {.
+  importc, header: "<sys/statvfs.h>".}
+
+proc chmod*(a1: cstring, a2: TMode): cint {.importc, header: "<sys/stat.h>".}
+proc fchmod*(a1: cint, a2: TMode): cint {.importc, header: "<sys/stat.h>".}
+proc fstat*(a1: cint, a2: var Tstat): cint {.importc, header: "<sys/stat.h>".}
+proc lstat*(a1: cstring, a2: var Tstat): cint {.importc, header: "<sys/stat.h>".}
+proc mkdir*(a1: cstring, a2: TMode): cint {.importc, header: "<sys/stat.h>".}
+proc mkfifo*(a1: cstring, a2: TMode): cint {.importc, header: "<sys/stat.h>".}
+proc mknod*(a1: cstring, a2: TMode, a3: Tdev): cint {.
+  importc, header: "<sys/stat.h>".}
+proc stat*(a1: cstring, a2: var Tstat): cint {.importc, header: "<sys/stat.h>".}
+proc umask*(a1: Tmode): TMode {.importc, header: "<sys/stat.h>".}
+
+proc S_ISBLK*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a block special file.
+proc S_ISCHR*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a character special file.
+proc S_ISDIR*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a directory.
+proc S_ISFIFO*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a pipe or FIFO special file.
+proc S_ISREG*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a regular file.
+proc S_ISLNK*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a symbolic link.
+proc S_ISSOCK*(m: Tmode): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a socket. 
+    
+proc S_TYPEISMQ*(buf: var TStat): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a message queue.
+proc S_TYPEISSEM*(buf: var TStat): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a semaphore.
+proc S_TYPEISSHM*(buf: var TStat): bool {.importc, header: "<sys/stat.h>".}
+  ## Test for a shared memory object. 
+    
+proc S_TYPEISTMO*(buf: var TStat): bool {.importc, header: "<sys/stat.h>".}
+  ## Test macro for a typed memory object. 
+  
+proc mlock*(a1: pointer, a2: int): cint {.importc, header: "<sys/mman.h>".}
+proc mlockall*(a1: cint): cint {.importc, header: "<sys/mman.h>".}
+proc mmap*(a1: pointer, a2: int, a3, a4, a5: cint, a6: Toff): pointer {.
+  importc, header: "<sys/mman.h>".}
+proc mprotect*(a1: pointer, a2: int, a3: cint): cint {.
+  importc, header: "<sys/mman.h>".}
+proc msync*(a1: pointer, a2: int, a3: cint): cint {.importc, header: "<sys/mman.h>".}
+proc munlock*(a1: pointer, a2: int): cint {.importc, header: "<sys/mman.h>".}
+proc munlockall*(): cint {.importc, header: "<sys/mman.h>".}
+proc munmap*(a1: pointer, a2: int): cint {.importc, header: "<sys/mman.h>".}
+proc posix_madvise*(a1: pointer, a2: int, a3: cint): cint {.
+  importc, header: "<sys/mman.h>".}
+proc posix_mem_offset*(a1: pointer, a2: int, a3: var Toff,
+           a4: var int, a5: var cint): cint {.importc, header: "<sys/mman.h>".}
+proc posix_typed_mem_get_info*(a1: cint, 
+  a2: var Tposix_typed_mem_info): cint {.importc, header: "<sys/mman.h>".}
+proc posix_typed_mem_open*(a1: cstring, a2, a3: cint): cint {.
+  importc, header: "<sys/mman.h>".}
+proc shm_open*(a1: cstring, a2: cint, a3: Tmode): cint {.
+  importc, header: "<sys/mman.h>".}
+proc shm_unlink*(a1: cstring): cint {.importc, header: "<sys/mman.h>".}
+
+proc asctime*(a1: var ttm): cstring{.importc, header: "<time.h>".}
+
+proc asctime_r*(a1: var ttm, a2: cstring): cstring {.importc, header: "<time.h>".}
+proc clock*(): Tclock {.importc, header: "<time.h>".}
+proc clock_getcpuclockid*(a1: tpid, a2: var Tclockid): cint {.
+  importc, header: "<time.h>".}
+proc clock_getres*(a1: Tclockid, a2: var Ttimespec): cint {.
+  importc, header: "<time.h>".}
+proc clock_gettime*(a1: Tclockid, a2: var Ttimespec): cint {.
+  importc, header: "<time.h>".}
+proc clock_nanosleep*(a1: Tclockid, a2: cint, a3: var Ttimespec,
+               a4: var Ttimespec): cint {.importc, header: "<time.h>".}
+proc clock_settime*(a1: Tclockid, a2: var Ttimespec): cint {.
+  importc, header: "<time.h>".}
+
+proc ctime*(a1: var Ttime): cstring {.importc, header: "<time.h>".}
+proc ctime_r*(a1: var Ttime, a2: cstring): cstring {.importc, header: "<time.h>".}
+proc difftime*(a1, a2: Ttime): cdouble {.importc, header: "<time.h>".}
+proc getdate*(a1: cstring): ptr ttm {.importc, header: "<time.h>".}
+
+proc gmtime*(a1: var ttime): ptr ttm {.importc, header: "<time.h>".}
+proc gmtime_r*(a1: var ttime, a2: var ttm): ptr ttm {.importc, header: "<time.h>".}
+proc localtime*(a1: var ttime): ptr ttm {.importc, header: "<time.h>".}
+proc localtime_r*(a1: var ttime, a2: var ttm): ptr ttm {.importc, header: "<time.h>".}
+proc mktime*(a1: var ttm): ttime  {.importc, header: "<time.h>".}
+proc nanosleep*(a1, a2: var Ttimespec): cint {.importc, header: "<time.h>".}
+proc strftime*(a1: cstring, a2: int, a3: cstring,
+           a4: var ttm): int {.importc, header: "<time.h>".}
+proc strptime*(a1, a2: cstring, a3: var ttm): cstring {.importc, header: "<time.h>".}
+proc time*(a1: var Ttime): ttime {.importc, header: "<time.h>".}
+proc timer_create*(a1: var Tclockid, a2: var Tsigevent,
+               a3: var Ttimer): cint {.importc, header: "<time.h>".}
+proc timer_delete*(a1: var Ttimer): cint {.importc, header: "<time.h>".}
+proc timer_gettime*(a1: Ttimer, a2: var Titimerspec): cint {.
+  importc, header: "<time.h>".}
+proc timer_getoverrun*(a1: Ttimer): cint {.importc, header: "<time.h>".}
+proc timer_settime*(a1: Ttimer, a2: cint, a3: var Titimerspec,
+               a4: var titimerspec): cint {.importc, header: "<time.h>".}
+proc tzset*() {.importc, header: "<time.h>".}
+
+
+proc wait*(a1: var cint): tpid {.importc, header: "<sys/wait.h>".}
+proc waitid*(a1: cint, a2: tid, a3: var Tsiginfo, a4: cint): cint {.
+  importc, header: "<sys/wait.h>".}
+proc waitpid*(a1: tpid, a2: var cint, a3: cint): tpid  {.
+  importc, header: "<sys/wait.h>".}
+
+proc bsd_signal*(a1: cint, a2: proc (x: pointer) {.noconv.}) {.
+  importc, header: "<signal.h>".}
+proc kill*(a1: Tpid, a2: cint): cint {.importc, header: "<signal.h>".}
+proc killpg*(a1: Tpid, a2: cint): cint {.importc, header: "<signal.h>".}
+proc pthread_kill*(a1: tpthread, a2: cint): cint {.importc, header: "<signal.h>".}
+proc pthread_sigmask*(a1: cint, a2, a3: var Tsigset): cint {.
+  importc, header: "<signal.h>".}
+proc `raise`*(a1: cint): cint {.importc, header: "<signal.h>".}
+proc sigaction*(a1: cint, a2, a3: var Tsigaction): cint {.
+  importc, header: "<signal.h>".}
+proc sigaddset*(a1: var Tsigset, a2: cint): cint {.importc, header: "<signal.h>".}
+proc sigaltstack*(a1, a2: var Tstack): cint {.importc, header: "<signal.h>".}
+proc sigdelset*(a1: var Tsigset, a2: cint): cint {.importc, header: "<signal.h>".}
+proc sigemptyset*(a1: var Tsigset): cint {.importc, header: "<signal.h>".}
+proc sigfillset*(a1: var Tsigset): cint {.importc, header: "<signal.h>".}
+proc sighold*(a1: cint): cint {.importc, header: "<signal.h>".}
+proc sigignore*(a1: cint): cint {.importc, header: "<signal.h>".}
+proc siginterrupt*(a1, a2: cint): cint {.importc, header: "<signal.h>".}
+proc sigismember*(a1: var Tsigset, a2: cint): cint {.importc, header: "<signal.h>".}
+proc signal*(a1: cint, a2: proc (x: cint) {.noconv.}) {.
+  importc, header: "<signal.h>".}
+proc sigpause*(a1: cint): cint {.importc, header: "<signal.h>".}
+proc sigpending*(a1: var tsigset): cint {.importc, header: "<signal.h>".}
+proc sigprocmask*(a1: cint, a2, a3: var tsigset): cint {.
+  importc, header: "<signal.h>".}
+proc sigqueue*(a1: tpid, a2: cint, a3: Tsigval): cint {.
+  importc, header: "<signal.h>".}
+proc sigrelse*(a1: cint): cint {.importc, header: "<signal.h>".}
+proc sigset*(a1: int, a2: proc (x: cint) {.noconv.}) {.importc, header: "<signal.h>".}
+proc sigsuspend*(a1: var Tsigset): cint {.importc, header: "<signal.h>".}
+proc sigtimedwait*(a1: var Tsigset, a2: var tsiginfo, 
+                   a3: var ttimespec): cint {.importc, header: "<signal.h>".}
+proc sigwait*(a1: var Tsigset, a2: var cint): cint {.importc, header: "<signal.h>".}
+proc sigwaitinfo*(a1: var Tsigset, a2: var tsiginfo): cint {.
+  importc, header: "<signal.h>".}
+
+
+proc catclose*(a1: Tnl_catd): cint {.importc, header: "<nl_types.h>".}
+proc catgets*(a1: Tnl_catd, a2, a3: cint, a4: cstring): cstring {.
+  importc, header: "<nl_types.h>".}
+proc catopen*(a1: cstring, a2: cint): Tnl_catd {.importc, header: "<nl_types.h>".}
+
+proc sched_get_priority_max*(a1: cint): cint {.importc, header: "<sched.h>".}
+proc sched_get_priority_min*(a1: cint): cint {.importc, header: "<sched.h>".}
+proc sched_getparam*(a1: tpid, a2: var Tsched_param): cint {.
+  importc, header: "<sched.h>".}
+proc sched_getscheduler*(a1: tpid): cint {.importc, header: "<sched.h>".}
+proc sched_rr_get_interval*(a1: tpid, a2: var Ttimespec): cint {.
+  importc, header: "<sched.h>".}
+proc sched_setparam*(a1: tpid, a2: var Tsched_param): cint {.
+  importc, header: "<sched.h>".}
+proc sched_setscheduler*(a1: tpid, a2: cint, a3: var tsched_param): cint {.
+  importc, header: "<sched.h>".}
+proc sched_yield*(): cint {.importc, header: "<sched.h>".}
+
+proc strerror*(errnum: cint): cstring {.importc, header: "<string.h>".}
+
+proc FD_CLR*(a1: cint, a2: var Tfd_set) {.importc, header: "<sys/select.h>".}
+proc FD_ISSET*(a1: cint, a2: var Tfd_set): cint {.
+  importc, header: "<sys/select.h>".}
+proc FD_SET*(a1: cint, a2: var Tfd_set) {.importc, header: "<sys/select.h>".}
+proc FD_ZERO*(a1: var Tfd_set) {.importc, header: "<sys/select.h>".}
+
+proc pselect*(a1: cint, a2, a3, a4: var Tfd_set, a5: var ttimespec,
+         a6: var Tsigset): cint  {.importc, header: "<sys/select.h>".}
+proc select*(a1: cint, a2, a3, a4: var Tfd_set, a5: var ttimeval): cint {.
+             importc, header: "<sys/select.h>".}
+
+when hasSpawnH:
+  proc posix_spawn*(a1: var tpid, a2: cstring,
+            a3: var Tposix_spawn_file_actions,
+            a4: var Tposix_spawnattr, 
+            a5, a6: cstringArray): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawn_file_actions_addclose*(a1: var tposix_spawn_file_actions,
+            a2: cint): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawn_file_actions_adddup2*(a1: var tposix_spawn_file_actions,
+            a2, a3: cint): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawn_file_actions_addopen*(a1: var tposix_spawn_file_actions,
+            a2: cint, a3: cstring, a4: cint, a5: tmode): cint {.
+            importc, header: "<spawn.h>".}
+  proc posix_spawn_file_actions_destroy*(
+    a1: var tposix_spawn_file_actions): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawn_file_actions_init*(
+    a1: var tposix_spawn_file_actions): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_destroy*(a1: var tposix_spawnattr): cint {.
+    importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getsigdefault*(a1: var tposix_spawnattr,
+            a2: var Tsigset): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getflags*(a1: var tposix_spawnattr,
+            a2: var cshort): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getpgroup*(a1: var tposix_spawnattr,
+            a2: var tpid): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getschedparam*(a1: var tposix_spawnattr,
+            a2: var tsched_param): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getschedpolicy*(a1: var tposix_spawnattr,
+            a2: var cint): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_getsigmask*(a1: var tposix_spawnattr,
+            a2: var tsigset): cint {.importc, header: "<spawn.h>".}
+  
+  proc posix_spawnattr_init*(a1: var tposix_spawnattr): cint {.
+    importc, header: "<spawn.h>".}
+  proc posix_spawnattr_setsigdefault*(a1: var tposix_spawnattr,
+            a2: var tsigset): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_setflags*(a1: var tposix_spawnattr, a2: cshort): cint {.
+    importc, header: "<spawn.h>".}
+  proc posix_spawnattr_setpgroup*(a1: var tposix_spawnattr, a2: tpid): cint {.
+    importc, header: "<spawn.h>".}
+  
+  proc posix_spawnattr_setschedparam*(a1: var tposix_spawnattr,
+            a2: var tsched_param): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnattr_setschedpolicy*(a1: var tposix_spawnattr, 
+                                       a2: cint): cint {.
+                                       importc, header: "<spawn.h>".}
+  proc posix_spawnattr_setsigmask*(a1: var tposix_spawnattr,
+            a2: var tsigset): cint {.importc, header: "<spawn.h>".}
+  proc posix_spawnp*(a1: var tpid, a2: cstring,
+            a3: var tposix_spawn_file_actions,
+            a4: var tposix_spawnattr,
+            a5, a6: cstringArray): cint {.importc, header: "<spawn.h>".}
+
+proc getcontext*(a1: var Tucontext): cint {.importc, header: "<ucontext.h>".}
+proc makecontext*(a1: var Tucontext, a4: proc (){.noconv.}, a3: cint) {.
+  varargs, importc, header: "<ucontext.h>".}
+proc setcontext*(a1: var Tucontext): cint {.importc, header: "<ucontext.h>".}
+proc swapcontext*(a1, a2: var Tucontext): cint {.importc, header: "<ucontext.h>".}
+
+proc readv*(a1: cint, a2: ptr TIOVec, a3: cint): int {.
+  importc, header: "<sys/uio.h>".}
+proc writev*(a1: cint, a2: ptr TIOVec, a3: cint): int {.
+  importc, header: "<sys/uio.h>".}
+
+proc CMSG_DATA*(cmsg: ptr Tcmsghdr): cstring {.
+  importc, header: "<sys/socket.h>".}
+
+proc CMSG_NXTHDR*(mhdr: ptr TMsgHdr, cmsg: ptr TCMsgHdr): ptr TCmsgHdr {.
+  importc, header: "<sys/socket.h>".}
+
+proc CMSG_FIRSTHDR*(mhdr: ptr TMsgHdr): ptr TCMsgHdr {.
+  importc, header: "<sys/socket.h>".}
+
+proc accept*(a1: cint, a2: ptr Tsockaddr, a3: ptr Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+
+proc bindSocket*(a1: cint, a2: ptr Tsockaddr, a3: Tsocklen): cint {.
+  importc: "bind", header: "<sys/socket.h>".}
+  ## is Posix's ``bind``, because ``bind`` is a reserved word
+  
+proc connect*(a1: cint, a2: ptr Tsockaddr, a3: Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+proc getpeername*(a1: cint, a2: ptr Tsockaddr, a3: ptr Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+proc getsockname*(a1: cint, a2: ptr Tsockaddr, a3: ptr Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+
+proc getsockopt*(a1, a2, a3: cint, a4: pointer, a5: ptr Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+
+proc listen*(a1, a2: cint): cint {.
+  importc, header: "<sys/socket.h>".}
+proc recv*(a1: cint, a2: pointer, a3: int, a4: cint): int {.
+  importc, header: "<sys/socket.h>".}
+proc recvfrom*(a1: cint, a2: pointer, a3: int, a4: cint,
+        a5: ptr Tsockaddr, a6: ptr Tsocklen): int {.
+  importc, header: "<sys/socket.h>".}
+proc recvmsg*(a1: cint, a2: ptr Tmsghdr, a3: cint): int {.
+  importc, header: "<sys/socket.h>".}
+proc send*(a1: cint, a2: pointer, a3: int, a4: cint): int {.
+  importc, header: "<sys/socket.h>".}
+proc sendmsg*(a1: cint, a2: ptr Tmsghdr, a3: cint): int {.
+  importc, header: "<sys/socket.h>".}
+proc sendto*(a1: cint, a2: pointer, a3: int, a4: cint, a5: ptr Tsockaddr,
+             a6: Tsocklen): int {.
+  importc, header: "<sys/socket.h>".}
+proc setsockopt*(a1, a2, a3: cint, a4: pointer, a5: Tsocklen): cint {.
+  importc, header: "<sys/socket.h>".}
+proc shutdown*(a1, a2: cint): cint {.
+  importc, header: "<sys/socket.h>".}
+proc socket*(a1, a2, a3: cint): cint {.
+  importc, header: "<sys/socket.h>".}
+proc sockatmark*(a1: cint): cint {.
+  importc, header: "<sys/socket.h>".}
+proc socketpair*(a1, a2, a3: cint, a4: var array[0..1, cint]): cint {.
+  importc, header: "<sys/socket.h>".}
+
+proc if_nametoindex*(a1: cstring): cint {.importc, header: "<net/if.h>".}
+proc if_indextoname*(a1: cint, a2: cstring): cstring {.
+  importc, header: "<net/if.h>".}
+proc if_nameindex*(): ptr Tif_nameindex {.importc, header: "<net/if.h>".}
+proc if_freenameindex*(a1: ptr Tif_nameindex) {.importc, header: "<net/if.h>".}
+
+proc IN6_IS_ADDR_UNSPECIFIED* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Unspecified address.
+proc IN6_IS_ADDR_LOOPBACK* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Loopback address.
+proc IN6_IS_ADDR_MULTICAST* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast address.
+proc IN6_IS_ADDR_LINKLOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Unicast link-local address.
+proc IN6_IS_ADDR_SITELOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Unicast site-local address.
+proc IN6_IS_ADDR_V4MAPPED* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## IPv4 mapped address.
+proc IN6_IS_ADDR_V4COMPAT* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## IPv4-compatible address.
+proc IN6_IS_ADDR_MC_NODELOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast node-local address.
+proc IN6_IS_ADDR_MC_LINKLOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast link-local address.
+proc IN6_IS_ADDR_MC_SITELOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast site-local address.
+proc IN6_IS_ADDR_MC_ORGLOCAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast organization-local address.
+proc IN6_IS_ADDR_MC_GLOBAL* (a1: ptr TIn6Addr): cint {.
+  importc, header: "<netinet/in.h>".}
+  ## Multicast global address.
+
+proc endhostent*() {.importc, header: "<netdb.h>".}
+proc endnetent*() {.importc, header: "<netdb.h>".}
+proc endprotoent*() {.importc, header: "<netdb.h>".}
+proc endservent*() {.importc, header: "<netdb.h>".}
+proc freeaddrinfo*(a1: ptr Taddrinfo) {.importc, header: "<netdb.h>".}
+
+proc gai_strerror*(a1: cint): cstring {.importc, header: "<netdb.h>".}
+
+proc getaddrinfo*(a1, a2: cstring, a3: ptr TAddrInfo, 
+                  a4: var ptr TAddrInfo): cint {.importc, header: "<netdb.h>".}
+                  
+proc gethostbyaddr*(a1: pointer, a2: Tsocklen, a3: cint): ptr THostent {.
+                    importc, header: "<netdb.h>".}
+proc gethostbyname*(a1: cstring): ptr THostent {.importc, header: "<netdb.h>".}
+proc gethostent*(): ptr THostent {.importc, header: "<netdb.h>".}
+
+proc getnameinfo*(a1: ptr Tsockaddr, a2: Tsocklen,
+                  a3: cstring, a4: Tsocklen, a5: cstring,
+                  a6: Tsocklen, a7: cint): cint {.importc, header: "<netdb.h>".}
+
+proc getnetbyaddr*(a1: int32, a2: cint): ptr TNetent {.importc, header: "<netdb.h>".}
+proc getnetbyname*(a1: cstring): ptr TNetent {.importc, header: "<netdb.h>".}
+proc getnetent*(): ptr TNetent {.importc, header: "<netdb.h>".}
+
+proc getprotobyname*(a1: cstring): ptr TProtoent {.importc, header: "<netdb.h>".}
+proc getprotobynumber*(a1: cint): ptr TProtoent {.importc, header: "<netdb.h>".}
+proc getprotoent*(): ptr TProtoent {.importc, header: "<netdb.h>".}
+
+proc getservbyname*(a1, a2: cstring): ptr TServent {.importc, header: "<netdb.h>".}
+proc getservbyport*(a1: cint, a2: cstring): ptr TServent {.
+  importc, header: "<netdb.h>".}
+proc getservent*(): ptr TServent {.importc, header: "<netdb.h>".}
+
+proc sethostent*(a1: cint) {.importc, header: "<netdb.h>".}
+proc setnetent*(a1: cint) {.importc, header: "<netdb.h>".}
+proc setprotoent*(a1: cint) {.importc, header: "<netdb.h>".}
+proc setservent*(a1: cint) {.importc, header: "<netdb.h>".}
+
+proc poll*(a1: ptr Tpollfd, a2: Tnfds, a3: int): cint {.
+  importc, header: "<poll.h>".}
+
+proc realpath*(name, resolved: CString): CString {.
+  importc: "realpath", header: "<stdlib.h>".}
+
+