Hi Simon,
> gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I. -I. -I.. -I./.. -I../gllib
> -I./../gllib -I/opt/local/include -g -O2 -MT test-pipe-filter-gi1.o -MD -MP
> -MF $depbase.Tpo -c -o test-pipe-filter-gi1.o test-pipe-filter-gi1.c &&\
> mv -f $depbase.Tpo $depbase.Po
> gcc -std=gnu99 -g -O2 -o test-pipe-filter-gi1 test-pipe-filter-gi1.o
> ../gllib/libgnu.a -L/Users/jas/daily/lib -lintl -L/opt/local/lib -liconv -lc
> -Wl,-framework -Wl,CoreFoundation
> /usr/libexec/gcc/powerpc-apple-darwin8/4.0.1/ld: Undefined symbols:
> _posix_spawn_file_actions_addclose
> _posix_spawn_file_actions_adddup2
> _posix_spawn_file_actions_addopen
> _posix_spawn_file_actions_destroy
> _posix_spawn_file_actions_init
> _posix_spawnattr_destroy
> _posix_spawnattr_init
> _posix_spawnattr_setflags
> _posix_spawnattr_setsigmask
> _posix_spawnp
> collect2: ld returned 1 exit status
> make[4]: *** [test-pipe-filter-gi1] Error 1
>
> [0] http://autobuild.josefsson.org/gnulib/log-201003170817383606000.txt
Hmm. The log file indicates that all posix_spawn* modules are present,
that the functions are not declared in the system headers, that
HAVE_POSIX_SPAWN is 0, but nevertheless the files such as
spawnattr_init.c have not been compiled. This is because HAVE_POSIX_SPAWN
has been set to 0 too late. In configure.ac we see:
- First comes the expansion of gl_POSIX_SPAWN_BODY, before gl_INIT already.
- Inside gl_INIT, first comes the snippet from modules/posix_spawnattr_init
and then only comes gl_SPAWN_H.
This should fix it:
2010-03-18 Bruno Haible <br...@clisp.org>
Fix bug introduced on 2010-03-14.
* m4/spawn_h.m4 (gl_HAVE_POSIX_SPAWN): New macro.
(gl_SPAWN_H): Require it.
* m4/posix_spawn.m4 (gl_POSIX_SPAWN_BODY): Likewise.
Reported by Simon Josefsson.
--- m4/posix_spawn.m4.orig Fri Mar 19 01:40:01 2010
+++ m4/posix_spawn.m4 Fri Mar 19 01:39:02 2010
@@ -1,4 +1,4 @@
-# posix_spawn.m4 serial 6
+# posix_spawn.m4 serial 7
dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -13,7 +13,7 @@
AC_DEFUN([gl_POSIX_SPAWN_BODY],
[
AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
- AC_CHECK_FUNCS_ONCE([posix_spawn])
+ AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
dnl Assume that when the main function exists, all the others,
dnl except posix_spawnattr_{get,set}sched*, are available as well.
dnl AC_CHECK_FUNCS_ONCE([posix_spawnp])
--- m4/spawn_h.m4.orig Fri Mar 19 01:40:02 2010
+++ m4/spawn_h.m4 Fri Mar 19 01:39:33 2010
@@ -1,4 +1,4 @@
-# spawn_h.m4 serial 9
+# spawn_h.m4 serial 10
dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -33,10 +33,7 @@
fi
AC_SUBST([HAVE_SPAWN_H])
- AC_CHECK_FUNCS_ONCE([posix_spawn])
- if test $ac_cv_func_posix_spawn != yes; then
- HAVE_POSIX_SPAWN=0
- fi
+ AC_REQUIRE([gl_HAVE_POSIX_SPAWN])
AC_REQUIRE([AC_C_RESTRICT])
@@ -55,6 +52,20 @@
posix_spawn_file_actions_adddup2])
])
+dnl Checks whether the system has the functions posix_spawn.
+dnl Sets ac_cv_func_posix_spawn and HAVE_POSIX_SPAWN.
+AC_DEFUN([gl_HAVE_POSIX_SPAWN],
+[
+ dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+ dnl once only, before all statements that occur in other macros.
+ AC_REQUIRE([gl_SPAWN_H_DEFAULTS])
+
+ AC_CHECK_FUNCS_ONCE([posix_spawn])
+ if test $ac_cv_func_posix_spawn != yes; then
+ HAVE_POSIX_SPAWN=0
+ fi
+])
+
dnl Unconditionally enables the replacement of <spawn.h>.
AC_DEFUN([gl_REPLACE_SPAWN_H],
[
