diff options
Diffstat (limited to 'build4')
| -rwxr-xr-x | build4 | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/build4 b/build4 index 66b7a74c..d31dc455 100755 --- a/build4 +++ b/build4 @@ -5,7 +5,8 @@ # 1. We rely on the OS to schedule steps, so thousands of independent tasks # will likely be counter-productive. # 2. Can run out of virtual memory if you spawn too many say $CC processes. -# 3. Compilation errors can cause the script to hang. +# 3. Compilation errors can cause the script to hang. We tag the most common +# suspects with '|| quit', but can't eliminate the possibility entirely. # 4. Ugly as heck! This version really benefits from comparisons with its # 'upstream', build2. And even then, diff gets confused. # 5. There's a mechanical difficulty: we use mktemp to reliably create @@ -95,12 +96,23 @@ mv_if_exists() { return 0 } +# wait for all the given filenames to exist +# exit immediately if a special file called '.quit' exists +QUITFILE=`pwd`/.quit +rm -f $QUITFILE wait_for_all() { # could use inotify on Linux while ! all_exist "$@" do +#? echo waiting: $* + test -e $QUITFILE && return 1 # some step had an error; stop all waiting steps using errexit sleep 1 done + return 0 +} +quit() { + touch $QUITFILE + exit 1 } all_exist() { @@ -117,7 +129,7 @@ mv_if_exists enumerate/enumerate $TMP wait_for_all enumerate/enumerate.cc older_than $TMP enumerate/enumerate.cc && { echo "building enumerate" - $CXX $CFLAGS enumerate/enumerate.cc -o $TMP + $CXX $CFLAGS enumerate/enumerate.cc -o $TMP || quit echo "done building enumerate" } mv $TMP enumerate/enumerate @@ -146,7 +158,7 @@ mv_if_exists tangle/tangle $TMP grep -h "^[[:space:]]*void test_" [0-9]*.cc |sed 's/^\s*void \(.*\)() {$/\1,/' |update test_list # } # Now that we have all the _lists, compile 'tangle' - $CXX $CFLAGS boot.cc -o $TMP + $CXX $CFLAGS boot.cc -o $TMP || quit cd .. echo "done building tangle" } @@ -165,7 +177,7 @@ mv_if_exists mu.cc $TMP older_than $TMP $LAYERS enumerate/enumerate tangle/tangle && { echo "running tangle" # no update here; rely on 'update' calls downstream - ./tangle/tangle $LAYERS > $TMP + ./tangle/tangle $LAYERS >$TMP || quit echo "done running tangle" } mv $TMP mu.cc @@ -177,7 +189,7 @@ mv_if_exists cleave/cleave $TMP wait_for_all cleave/cleave.cc older_than $TMP cleave/cleave.cc && { echo "building cleave" - $CXX $CFLAGS cleave/cleave.cc -o $TMP + $CXX $CFLAGS cleave/cleave.cc -o $TMP || quit rm -rf .build echo "done building cleave" } @@ -203,7 +215,7 @@ mv_if_exists mu_bin $TMP wait_for_all mu.cc cleave/cleave termbox/*.c termbox/*.h termbox/*.inl older_than $TMP mu.cc *_list cleave/cleave termbox/* && { echo "building mu_bin" - ./cleave/cleave mu.cc .build + ./cleave/cleave mu.cc .build || quit cd .build # create the list of global variable declarations from the corresponding definitions grep ';' global_definitions_list |sed 's/[=(].*/;/' |sed 's/^[^\/# ]/extern &/' |sed 's/^extern extern /extern /' |update global_declarations_list @@ -215,7 +227,7 @@ mv_if_exists mu_bin $TMP ( older_than $TMP $f header global_declarations_list function_list test_list && { echo "building $OBJ" - $CXX $CFLAGS -c $f -o $TMP + $CXX $CFLAGS -c $f -o $TMP || quit echo "done building $OBJ" } mv $TMP $OBJ @@ -227,7 +239,7 @@ mv_if_exists mu_bin $TMP ( older_than $TMP utf8.c && { echo "building termbox/utf8.o" - $CC $CFLAGS -c utf8.c -o $TMP + $CC $CFLAGS -c utf8.c -o $TMP || quit echo "done building termbox/utf8.o" } mv $TMP utf8.o @@ -237,7 +249,7 @@ mv_if_exists mu_bin $TMP ( older_than $TMP termbox.c termbox.h input.inl output.inl bytebuffer.inl && { echo "building termbox/termbox.o" - $CC $CFLAGS -c termbox.c -o $TMP + $CC $CFLAGS -c termbox.c -o $TMP || quit echo "done building termbox/termbox.o" } mv $TMP termbox.o @@ -248,7 +260,7 @@ mv_if_exists mu_bin $TMP wait_for_all termbox.o utf8.o older_than $TMP termbox.o utf8.o && { echo "building termbox/libtermbox.a" - rm $TMP; ar rcs $TMP termbox.o utf8.o # race condition; later mktemp may end up reusing this file + rm $TMP; ar rcs $TMP termbox.o utf8.o || quit # race condition; later mktemp may end up reusing this file echo "done building termbox/libtermbox.a" } mv $TMP libtermbox.a @@ -258,7 +270,7 @@ mv_if_exists mu_bin $TMP echo wait_for_all $MU_OBJS termbox/libtermbox.a wait_for_all $MU_OBJS termbox/libtermbox.a echo "building .build/mu_bin" - $CXX $CFLAGS $MU_OBJS termbox/libtermbox.a -o $TMP + $CXX $CFLAGS $MU_OBJS termbox/libtermbox.a -o $TMP || quit echo "done building .build/mu_bin" echo "done building mu_bin" } @@ -278,9 +290,5 @@ exit 0 # scenarios considered: # 0 status when nothing needs updating -# no output when nothing needs updating -# no output for mu.cc when .mu files modified -# touch mu.cc but don't modify it; no output on second build -# touch a .cc layer but don't modify it; no output on second build # only a single layer is recompiled when changing a C++ function -# stop immediately after failure in tangle +# stop immediately after any failure |