dnl Process this file with autoconf to produce a configure script.
dnl written jan/1997
dnl by T.E.Dickey <dickey@clark.net>
dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>

AC_PREREQ(2.12)
AC_INIT(userdefs.h)
AC_CONFIG_HEADER(lynx_cfg.h:config.hin)

AC_PREFIX_DEFAULT(/usr/local)
AC_CANONICAL_HOST

dnl --------------------------------------------------------------------------
dnl Checks for location of programs
dnl --------------------------------------------------------------------------

AC_PROG_CC
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_MAKE_SET
CF_MAKE_INCLUDE
AC_PROG_INSTALL
AC_CHECK_PROGS(LINT, lint alint lclint tdlint, [])

dnl --------------------------------------------------------------------------
dnl Debug/development/test
dnl --------------------------------------------------------------------------

CF_HELP_MESSAGE(
Development Options:)

CF_DISABLE_ECHO

AC_MSG_CHECKING(if you want to check memory-leaks)
CF_ARG_ENABLE(find-leaks,
	[  --enable-find-leaks     logic for testing memory leaks],
	[with_leak_checks=yes],
	[with_leak_checks=no])
AC_MSG_RESULT($with_leak_checks)
test "$with_leak_checks" = "yes" && AC_DEFINE(LY_FIND_LEAKS)

AC_MSG_CHECKING(if you want to enable debug-code)
CF_ARG_ENABLE(debug,
	[  --enable-debug          logic for traces/debugging],
	[with_debug=yes],
	[with_debug=no])
AC_MSG_RESULT($with_debug)
if test "$with_debug" = "yes" ; then
	case $host_os in
	ultrix*|osf*)
		CF_STRIP_O_OPT(CFLAGS)
		if test -z "$GCC" ; then
			CFLAGS="$CFLAGS -g3"
		fi
		;;
	esac
else
	case $host_os in
	osf*) #(vi
		CFLAGS="$CFLAGS -std1"
		CF_STRIP_G_OPT(CFLAGS)
		;;
	*)
		CF_STRIP_G_OPT(CFLAGS)
		;;
	esac
fi


if test -n "$GCC"
then
AC_MSG_CHECKING(if you want to turn on gcc warnings)
CF_ARG_ENABLE(warnings,
	[  --enable-warnings       GCC compiler warnings],
	[with_warnings=yes],
	[with_warnings=no])
AC_MSG_RESULT($with_warnings)
if test "$with_warnings" = "yes"
then
	CF_GCC_ATTRIBUTES
	CF_GCC_WARNINGS
fi
fi

dnl --------------------------------------------------------------------------
dnl --------------------------------------------------------------------------

CF_HELP_MESSAGE(
Basic Configuration Options:)

AC_MSG_CHECKING(if you want full utility pathnames)
CF_ARG_DISABLE(full-paths,
	[  --disable-full-paths    control whether full utility pathnames are used],
	[with_full_paths=no],
	[with_full_paths=yes])
AC_MSG_RESULT($with_full_paths)

CF_DEFINE_PROG(system mailer, SYSTEM_MAIL,
	/usr/mmdf/bin/submit \
	/usr/sbin/sendmail \
	/usr/lib/sendmail  \
	)
CF_SYSTEM_MAIL_FLAGS

CF_PATH_PROG(CHMOD,	chmod)
CF_PATH_PROG(COMPRESS,	compress)
CF_PATH_PROG(COPY,	cp)
CF_PATH_PROG(GZIP,	gzip)
CF_PATH_PROG(MKDIR,	mkdir)
CF_PATH_PROG(MV,	mv)
CF_PATH_PROG(RM,	rm)
CF_PATH_PROG(TAR,	tar)
CF_PATH_PROG(TOUCH,	touch)
CF_PATH_PROG(UNCOMPRESS,gunzip)
CF_PATH_PROG(UNZIP,	unzip)
CF_PATH_PROG(UUDECODE,	uudecode)
CF_PATH_PROG(ZCAT,	zcat)
CF_PATH_PROG(ZIP,	zip)

dnl 'INSTALL' is a special case, since the configure script has to find a
dnl BSD-compatible one so the build/install works properly.
case "$INSTALL" in
$srcdir*) # (vi
	AC_DEFINE_UNQUOTED(INSTALL_PATH,"install")
	;;
*) # (vi
	AC_DEFINE_UNQUOTED(INSTALL_PATH,"$INSTALL")
	;;
esac

dnl --------------------------------------------------------------------------
dnl Checks for compiler & standard-library characteristics
dnl --------------------------------------------------------------------------

dnl If we're able to run this script, this is true!
AC_DEFINE(UNIX)

if test -z "$GCC" ; then
	CF_ANSI_CC_CHECK
fi
AC_C_CONST

dnl Only add to this case statement things that we cannot design tests for.
PROG_EXT=
case $host_os in
aix4*)
	CFLAGS="$CFLAGS -DAIX4 -D_BSD=44" 
	LIBS="$LIBS -lbsd"
	;;
aix*)
	LIBS="$LIBS -lbsd"
	;;
apollo*)
	CFLAGS="$CFLAGS -D_BUILTINS -W0,-opt,4"
	;;
bsdi*)
	CFLAGS="$CFLAGS -DBSDI" 
	;;
clix*)
	# Tested on CLIX 3.1 (T.Dickey).  The original makefile entry
	# contributed by Alex Matulich (matuli_a@marlin.navsea.navy.mil) also
	# references -lmalloc and -lbsd.
	AC_CHECK_LIB(c_s,strcmp)
	;;
convex*)
	CFLAGS="$CFLAGS -D__STDC__ -Dunix"
	;;
dgux*)
	CFLAGS="$CFLAGS -DDGUX" 
	;;
hpux*)
	CFLAGS="$CFLAGS -DSNAKE" 
	;;
isc*)
	# -DPOSIX_JC is necessary, else LYBookmark.c never finds out what a mode_t is.
	CFLAGS="$CFLAGS -DISC -DPOSIX_JC"
	LIBS="$LIBS -linet -lnsl_s -lcposix"
	;;
irix*)
	# The original makefile used the $CFLAGS option -cckr for some form
	# of K&R compatibility.  However, this causes compilation warnings for
	# varargs on IRIX 5.2, and does not appear to be needed.
	#removed: CFLAGS="$CFLAGS -cckr" 
	;;
linux*)
	CFLAGS="$CFLAGS -DLINUX" 
	;;
next*)
	CFLAGS="$CFLAGS -DNEXT -DXMOSAIC_HACK"
	;;
openbsd*)
	LIBS="$LIBS -lcompat"
	;;
os2*)
	# We make sure -Zexe is not used -- it would interfere with @PROG_EXT@
	CFLAGS="$CFLAGS -Zmt -D__ST_MT_ERRNO__"
	LDFLAGS=`echo "$LDFLAGS -Zmt -Zcrtdll" | sed "s/-Zexe//g"`
	PROG_EXT=".exe"
	;;
osf*)
	# Increase the maximum size of functions that will be optimized.
	test -z "$GCC" && CFLAGS="$CFLAGS -O -Olimit 4000"
	CFLAGS="$CFLAGS -DDSYS5"
	;;
sco3.2v5*)
	test $ac_cv_prog_gcc != yes && CC="cc -belf"
	;;
sco*)
	LIBS="$LIBS -lmalloc"
	# It's a little late to do much, but try to warn user if he's using
	# SCO's cc (which is reported to have broken const/volatile).
	case "$CC" in #(vi
	cc|*/cc)
		AC_MSG_WARN(You should consider using gcc or rcc if available)
		unset ac_cv_prog_CC
		AC_CHECK_PROGS(CC,gcc rcc,$CC)
		;;
	esac
	;;
sequent-ptx)
	CFLAGS="$CFLAGS -DSVR4_BSDSELECT -DNO_IOCTL -DUSE_FCNTL"
	;;
sequent-ptx2)
	CFLAGS="$CFLAGS -DSVR4_BSDSELECT"
	;;
sony-newsos*)
	CFLAGS="$CFLAGS -I/usr/sony/include"
	AC_CHECK_HEADERS(jcurses.h)
	;;
svr4)
	CFLAGS="$CFLAGS -DSVR4_BSDSELECT -DSVR4"
	;;
sunos3*)
	CFLAGS="$CFLAGS -DSUN"
	;;
sunos4*)
	CFLAGS="$CFLAGS -DSUN -DSUN4"
	;;
ultrix*)
	# Increase the maximum size of functions that will be optimized.
	test -z "$GCC" && CFLAGS="$CFLAGS -O -Olimit 600 -G 7"
	CFLAGS="$CFLAGS -DULTRIX" 
	AC_CHECK_HEADERS(cursesX.h, cf_cv_ncurses_header=cursesX.h)
	;;
esac
AC_SUBST(PROG_EXT)

dnl --------------------------------------------------------------------------
dnl Checks for library configuration (added right-to-left)
dnl --------------------------------------------------------------------------

CF_NETLIBS

AC_MSG_CHECKING(for screen type)
dnl This has to be cached, since there's a lot of interdependent tests.
AC_CACHE_VAL(cf_cv_screen,[
AC_ARG_WITH(screen,
[  --with-screen=XXX       select screen type
                          (XXX is curses (default), ncurses or slang)],
	[
case $withval in
curses|ncurses|slang)
	cf_cv_screen=$withval
	;;
*)	AC_ERROR(Unexpected value)
	;;
esac],
	[cf_cv_screen=curses])])
AC_MSG_RESULT($cf_cv_screen)

if test $cf_cv_screen != ncurses ; then
	if eval "test \"`echo '$''{'cf_cv_ncurses_header'+set}'`\" != set"; then
		cf_cv_ncurses_header=curses.h
	fi
fi

case $cf_cv_screen in
curses)
	CF_CURSES_LIBS
	CF_CURS_PERFORMANCE
	;;
ncurses)
	CF_NCURSES_CPPFLAGS
	CF_NCURSES_LIBS
	;;
slang)
	CF_SLANG_CPPFLAGS
	CF_SLANG_LIBS
	;;
esac

dnl Get the actual value for $libdir, which we will compile into Lynx as part of
dnl the config pathnames.
eval cf_libdir=$libdir
cf_libdir=`echo $cf_libdir | sed -e s@'^NONE/'@$prefix/@ -e s@'^NONE/'@$ac_default_prefix/@`

AC_MSG_CHECKING(for location of config-file)
LYNX_CFG_FILE=$cf_libdir/lynx.cfg
AC_DEFINE_UNQUOTED(LYNX_CFG_FILE,"$LYNX_CFG_FILE")
AC_MSG_RESULT($LYNX_CFG_FILE)

dnl --------------------------------------------------------------------------
dnl Checks for standard headers
dnl --------------------------------------------------------------------------

AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_DIRENT
dnl Don't check for sys/wait.h here since it is covered by another test.
AC_CHECK_HEADERS( \
	fcntl.h \
	limits.h \
	stdlib.h \
	string.h \
	sys/fcntl.h \
	sys/filio.h \
	sys/ioctl.h \
	sys/param.h \
	sys/time.h \
	termio.h \
	termios.h \
	unistd.h \
)
CF_TERMIO_AND_TERMIOS
CF_FUNC_WAIT
AC_TYPE_MODE_T

dnl --------------------------------------------------------------------------
dnl Checks for library units
dnl --------------------------------------------------------------------------

AC_FUNC_VFORK
CF_FIONBIO
CF_REMOVE_BROKEN
CF_FUNC_LSTAT
AC_CHECK_FUNCS( \
	cuserid \
	getcwd \
	getgroups \
	putenv \
	readdir \
	strerror \
	waitpid \
)
AC_REPLACE_FUNCS( \
	mktime \
	strstr \
)

CF_CHECK_FUNCDECLS([#include <string.h>], strstr)
CF_CHECK_FUNCDECLS([
#include <stdio.h>
#include <grp.h>], getgrgid getgrnam)

dnl --------------------------------------------------------------------------
dnl Checks for external-data
dnl --------------------------------------------------------------------------

CF_BOOL_DEFS
CF_ERRNO
CF_LOCALE
CF_NGROUPS
CF_SYS_ERRLIST
CF_UTMP

### These tests must be run after establishing the curses library.
if test $cf_cv_screen != slang ; then
	CF_ALT_CHAR_SET
	CF_FANCY_CURSES
	CF_NCURSES_VERSION
	CF_NCURSES_BROKEN
	CF_COLOR_CURSES
	CF_SIZECHANGE
	CF_TTYTYPE
	AC_CHECK_FUNCS( \
		cbreak \
		keypad \
		use_default_colors \
		wborder \
	)
fi

dnl --------------------------------------------------------------------------
dnl Miscellaneous options that don't need to test system features
dnl --------------------------------------------------------------------------

CF_HELP_MESSAGE(
Miscellaneous Options:)

AC_MSG_CHECKING(if experimental 8-bit case-conversion should be used)
CF_ARG_ENABLE(8bit-toupper,
[  --enable-8bit-toupper   use experimental 8-bit case-conversion],
	[use_8bit_toupper=$enableval],
	[use_8bit_toupper=no])
AC_MSG_RESULT($use_8bit_toupper)
test $use_8bit_toupper != no && AC_DEFINE(EXP_8BIT_TOUPPER)

AC_MSG_CHECKING(if color-style code should be used)
CF_ARG_ENABLE(color-style,
[  --enable-color-style    use optional/experimental color style],
	[use_color_style=$enableval],
	[use_color_style=no])

if test $use_color_style != no ; then
	if test .$cf_cv_color_curses != .yes ; then
		AC_ERROR(Configuration does not support color-styles)
	fi
	if test $cf_cv_screen = slang ; then
		AC_ERROR(Configuration does not support color-styles)
	fi
	AC_DEFINE(USE_HASH)
	AC_DEFINE(LINKEDSTYLES)
fi

case $use_color_style in
no)
	AC_MSG_RESULT(no)
	INSTALL_LSS=
	;;
*)
	AC_DEFINE(USE_COLOR_STYLE)
	AC_MSG_RESULT(yes)

	AC_MSG_CHECKING(for location of style-sheet file)
	LYNX_LSS_FILE=$cf_libdir/lynx.lss
	AC_DEFINE_UNQUOTED(LYNX_LSS_FILE,"$LYNX_LSS_FILE")
	AC_MSG_RESULT($LYNX_LSS_FILE)
	INSTALL_LSS=install-lss
	;;
esac
AC_SUBST(INSTALL_LSS)

use_dft_colors=no
test ".$cf_cv_screen" = ".slang"                && use_dft_colors=maybe
test ".$ac_cv_func_use_default_colors" = ".yes" && use_dft_colors=maybe

if test "$use_dft_colors" != no ; then
AC_MSG_CHECKING(if you want to use default-colors)
CF_ARG_ENABLE(default-colors,
[  --enable-default-colors enable use of default-colors (ncurses/slang)],
	[use_dft_colors=yes],
	[use_dft_colors=no])
AC_MSG_RESULT($use_dft_colors)
test $use_dft_colors = "yes" && AC_DEFINE(USE_DEFAULT_COLORS)
fi

AC_MSG_CHECKING(if you want to use extended HTML DTD logic)
CF_ARG_DISABLE(extended-dtd,
[  --disable-extended-dtd  disable extended HTML DTD logic],
	[use_ext_htmldtd=no],
	[use_ext_htmldtd=yes])
AC_MSG_RESULT($use_ext_htmldtd)
test $use_ext_htmldtd = "no" && AC_DEFINE(NO_EXTENDED_HTMLDTD)

AC_MSG_CHECKING(if you want to use external commands)
CF_ARG_ENABLE(externs,
[  --enable-externs        use external commands],
	[use_externs=yes],
	[use_externs=no])
AC_MSG_RESULT($use_externs)
test $use_externs != ".no" && AC_DEFINE(USE_EXTERNALS)

AC_MSG_CHECKING(if you want to use setfont support)
CF_ARG_ENABLE(font-switch,
[  --enable-font-switch    use Linux setfont for character-translation],
	[use_setfont=yes],
	[use_setfont=no])
AC_MSG_RESULT($use_setfont)
test $use_setfont = yes && AC_DEFINE(EXP_CHARTRANS_AUTOSWITCH)

AC_MSG_CHECKING(if you want internal-links feature)
CF_ARG_ENABLE(internal-links,
[  --enable-internal-links  handle following links to same doc differently],
	[use_internal_links=yes],
	[use_internal_links=no])
AC_MSG_RESULT($use_internal_links)
test $use_internal_links = no && AC_DEFINE(DONT_TRACK_INTERNAL_LINKS)

AC_MSG_CHECKING(if you want to fork NSL requests)
CF_ARG_ENABLE(nsl-fork,
[  --enable-nsl-fork       fork NSL requests, allowing them to be aborted],
	[use_nsl_fork=yes],
	[use_nsl_fork=no])
AC_MSG_RESULT($use_nsl_fork)
test $use_nsl_fork = yes && AC_DEFINE(NSL_FORK)

AC_MSG_CHECKING(if you want to underline links)
CF_ARG_ENABLE(underlines,
[  --enable-underlines     underline links rather than using boldface],
	[use_underline=yes],
	[use_underline=no])
AC_MSG_RESULT($use_underline)
test $use_underline = yes && AC_DEFINE(UNDERLINE_LINKS)

AC_MSG_CHECKING(if you want to use zlib for decompression of some gzip files)
AC_ARG_WITH(zlib,
[  --with-zlib             use zlib for decompression of some gzip files],
	[use_zlib=$withval],
	[use_zlib=no])
AC_MSG_RESULT($use_zlib)

if test ".$use_zlib" != ".no" ; then
	CF_FIND_LIBRARY(z,
		[#include <zlib.h>],
		[gzopen("name","mode")],
		gzopen)
	AC_DEFINE(USE_ZLIB)
fi

dnl --------------------------------------------------------------------------
dnl DirEd (directory-editor) options
dnl --------------------------------------------------------------------------

CF_HELP_MESSAGE(
Directory Editor Options:)

# All DirEd functions that were enabled on compilation can be disabled
# or modified at run time via DIRED_MENU symbols in lynx.cfg.
AC_MSG_CHECKING(if directory-editor code should be used)
CF_ARG_DISABLE(dired,
[  --disable-dired          enable optional directory-editor, DirEd],
	[use_dired=$enableval],
	[use_dired=yes])
AC_MSG_RESULT($use_dired)

if test ".$use_dired" != ".no" ; then
	AC_DEFINE(DIRED_SUPPORT)

	AC_MSG_CHECKING(if you wish to allow extracting from archives via DirEd)
	CF_ARG_DISABLE(dired-archive,
	[  --disable-dired-archive  disable dearchiving commands],[AC_DEFINE(ARCHIVE_ONLY)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow users to redefine DirEd keys)
	CF_ARG_DISABLE(dired-override,
	[  --disable-dired-override disable private keymaps],,[AC_DEFINE(OK_OVERRIDE)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow permissions commands via DirEd)
	CF_ARG_DISABLE(dired-permit,
	[  --disable-dired-permit  disable chmod/attrib commands],,[AC_DEFINE(OK_PERMIT)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow executable-permission commands via DirEd)
	CF_ARG_DISABLE(dired-xpermit,
	[  --disable-dired-xpermit disable chmod/attrib commands],[AC_DEFINE(NO_CHANGE_EXECUTE_PERMS)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow "tar" commands from DirEd)
	CF_ARG_DISABLE(dired-tar,
	[  --disable-dired-tar     disable "tar" command],,[AC_DEFINE(OK_TAR)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow "uudecode" commands from DirEd)
	CF_ARG_DISABLE(dired-uudecode,
	[  --disable-dired-uudecode disable "uudecode" command],,[AC_DEFINE(OK_UUDECODE)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow "zip" and "unzip" commands from DirEd)
	CF_ARG_DISABLE(dired-zip,
	[  --disable-dired-zip     disable "zip", "unzip"  commands],,[AC_DEFINE(OK_ZIP)])
	AC_MSG_RESULT($enableval)

	AC_MSG_CHECKING(if you wish to allow "gzip" and "gunzip" commands from DirEd)
	CF_ARG_DISABLE(dired-gzip,
	[  --disable-dired-gzip    disable "gzip", "gunzip" commands],,[AC_DEFINE(OK_GZIP)])
	AC_MSG_RESULT($enableval)
fi

AC_MSG_CHECKING(if you want long-directory listings)
CF_ARG_DISABLE(long-list,
[  --disable-long-list     disable long "ls -l" directory listings],,
	[AC_DEFINE(LONG_LIST)])
AC_MSG_RESULT($enableval)

AC_MSG_CHECKING(if parent-directory references are permitted)
CF_ARG_DISABLE(parent-dir-refs,
[  --disable-parent-dir-refs
                          disable "Up-to" links in directory listings],
	[AC_DEFINE(NO_PARENT_DIR_REFERENCE)])
AC_MSG_RESULT($enableval)

### Finally, build config.h and the makefiles
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
srcdir="$srcdir"
SRCDIR_CLEAN="#"
if test -n "$srcdir" ; then
	echo srcdir is $srcdir
	$srcdir/mkdirs.sh WWW/Library/unix
	$srcdir/mkdirs.sh src/chrtrans
	test "$srcdir" != "." && SRCDIR_CLEAN=""
fi

AC_SUBST(SRCDIR_CLEAN)
AC_OUTPUT(
	makefile \
	WWW/Library/unix/makefile \
	src/makefile \
	src/chrtrans/makefile \
)