Mercurial > gnulib
view m4/putenv.m4 @ 7356:0af37e82a5e3
* fsusage.m4 (gl_STATFS_TRUNCATES): Avoid unused variable.
* getdate.m4 (gl_C_COMPOUND_LITERALS): Likewise.
* jm-winsz1.m4 (gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H): Likewise;
also add missing comma that caused broken test.
* link-follow.m4 (gl_AC_FUNC_LINK_FOLLOWS_SYMLINK): Include
stdlib.h, for `abort'.
* ls-mntd-fs.m4 (gl_LIST_MOUNTED_FILE_SYSTEMS): Avoid unused
variables.
* mkdir-slash.m4 (gl_FUNC_MKDIR_TRAILING_SLASH): Check for and
include unistd.h if present, for `rmdir'.
* physmem.m4 (gl_SYS__SYSTEM_CONFIGURATION): Avoid unused
variables.
* putenv.m4 (gl_FUNC_PUTENV): Rewrite using AC_RUN_IFELSE, and
in the process include standard headers for prototypes.
* readutmp.m4 (gl_READUTMP): Require AC_GNU_SOURCE, so utmpxname
gets declared on GNU/Linux.
* rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Check for and include
unistd.h, for `rmdir'.
* time_r.m4 (gl_TIME_R): Avoid unused variables.
author | Ralf Wildenhues <Ralf.Wildenhues@gmx.de> |
---|---|
date | Fri, 22 Sep 2006 18:09:47 +0000 |
parents | 3d99d01160aa |
children | b839560eec9f |
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# putenv.m4 serial 12 dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 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. dnl From Jim Meyering. dnl dnl Check whether putenv ("FOO") removes FOO from the environment. dnl The putenv in libc on at least SunOS 4.1.4 does *not* do that. AC_DEFUN([gl_FUNC_PUTENV], [AC_CACHE_CHECK([for SVID conformant putenv], jm_cv_func_svid_putenv, [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[ /* Put it in env. */ if (putenv ("CONFTEST_putenv=val")) return 1; /* Try to remove it. */ if (putenv ("CONFTEST_putenv")) return 1; /* Make sure it was deleted. */ if (getenv ("CONFTEST_putenv") != 0) return 1; return 0; ])], jm_cv_func_svid_putenv=yes, jm_cv_func_svid_putenv=no, dnl When crosscompiling, assume putenv is broken. jm_cv_func_svid_putenv=no) ]) if test $jm_cv_func_svid_putenv = no; then AC_LIBOBJ(putenv) AC_DEFINE(putenv, rpl_putenv, [Define to rpl_putenv if the replacement function should be used.]) fi ])