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| author | Ludovic Courtès <ludo@gnu.org> | 2009-05-21 01:00:41 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2009-05-21 01:00:41 +0200 |
| commit | f240aacb412172f9c228653674b13d41279bebc8 (patch) | |
| tree | cf4e53d75874f9694e06a65e5d51e5d77acfee15 /m4/flock.m4 | |
| parent | fc76c08d872f816a075de0a9096006966f00a666 (diff) | |
| download | guile-f240aacb412172f9c228653674b13d41279bebc8.tar.gz | |
Add Gnulib portability modules; update Gnulib files.
* m4/gnulib-cache.m4 (gl_MODULES): Add `flock' (provides flock(2)
declaration and implementation), `fpieee' (fixes floating point
behavior on Alpha and SH), `stdlib' (provides an unsetenv(3)
declaration, among others), `putenv' (provides a putenv(3) declaration
and implementation with the semantics we need).
Diffstat (limited to 'm4/flock.m4')
| -rw-r--r-- | m4/flock.m4 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/m4/flock.m4 b/m4/flock.m4 new file mode 100644 index 000000000..96475fc57 --- /dev/null +++ b/m4/flock.m4 @@ -0,0 +1,26 @@ +# flock.m4 serial 1 +dnl Copyright (C) 2008 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_FLOCK], +[ + AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([flock]) + if test $ac_cv_func_flock = no; then + HAVE_FLOCK=0 + AC_LIBOBJ([flock]) + gl_PREREQ_FLOCK + fi +]) + +dnl Prerequisites of lib/flock.c. +AC_DEFUN([gl_PREREQ_FLOCK], +[ + AC_CHECK_FUNCS_ONCE([fcntl]) + AC_CHECK_HEADERS_ONCE([unistd.h fcntl.h]) + + dnl Do we have a POSIX fcntl lock implementation? + AC_CHECK_MEMBERS([struct flock.l_type],[],[],[[#include <fcntl.h>]]) +]) |