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authorTon Voon <ton.voon@opsera.com>2010-06-24 09:02:31 (GMT)
committerTon Voon <ton.voon@opsera.com>2010-06-24 09:02:31 (GMT)
commit342f3b403e888800fb1b0502bf4e0d8268358573 (patch)
tree47a0031fcf01edae3131fc147304d14f6f2aee20 /gl/m4/environ.m4
parentf789a37b057b6f34820ea4f95d63f53b5a84c980 (diff)
downloadmonitoring-plugins-342f3b403e888800fb1b0502bf4e0d8268358573.tar.gz
Added unsetenv and setenv from gnulib
Diffstat (limited to 'gl/m4/environ.m4')
-rw-r--r--gl/m4/environ.m436
1 files changed, 36 insertions, 0 deletions
diff --git a/gl/m4/environ.m4 b/gl/m4/environ.m4
new file mode 100644
index 0000000..4c6849a
--- /dev/null
+++ b/gl/m4/environ.m4
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1# environ.m4 serial 4
2dnl Copyright (C) 2001-2004, 2006-2010 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN_ONCE([gl_ENVIRON],
8[
9 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10 dnl Persuade glibc <unistd.h> to declare environ.
11 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
12 gt_CHECK_VAR_DECL([#include <unistd.h>], environ)
13 if test $gt_cv_var_environ_declaration != yes; then
14 HAVE_DECL_ENVIRON=0
15 fi
16])
17
18# Check if a variable is properly declared.
19# gt_CHECK_VAR_DECL(includes,variable)
20AC_DEFUN([gt_CHECK_VAR_DECL],
21[
22 define([gt_cv_var], [gt_cv_var_]$2[_declaration])
23 AC_MSG_CHECKING([if $2 is properly declared])
24 AC_CACHE_VAL([gt_cv_var], [
25 AC_TRY_COMPILE([$1
26 extern struct { int foo; } $2;],
27 [$2.foo = 1;],
28 gt_cv_var=no,
29 gt_cv_var=yes)])
30 AC_MSG_RESULT([$gt_cv_var])
31 if test $gt_cv_var = yes; then
32 AC_DEFINE([HAVE_]m4_translit($2, [a-z], [A-Z])[_DECL], 1,
33 [Define if you have the declaration of $2.])
34 fi
35 undefine([gt_cv_var])
36])