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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/setenv.m4
parentf789a37b057b6f34820ea4f95d63f53b5a84c980 (diff)
downloadmonitoring-plugins-342f3b403e888800fb1b0502bf4e0d8268358573.tar.gz
Added unsetenv and setenv from gnulib
Diffstat (limited to 'gl/m4/setenv.m4')
-rw-r--r--gl/m4/setenv.m4111
1 files changed, 111 insertions, 0 deletions
diff --git a/gl/m4/setenv.m4 b/gl/m4/setenv.m4
new file mode 100644
index 0000000..58f6d13
--- /dev/null
+++ b/gl/m4/setenv.m4
@@ -0,0 +1,111 @@
1# setenv.m4 serial 16
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([gl_FUNC_SETENV],
8[
9 AC_REQUIRE([gl_FUNC_SETENV_SEPARATE])
10 if test $HAVE_SETENV$REPLACE_SETENV != 10; then
11 AC_LIBOBJ([setenv])
12 fi
13])
14
15# Like gl_FUNC_SETENV, except prepare for separate compilation (no AC_LIBOBJ).
16AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
17[
18 AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
19 AC_CHECK_FUNCS_ONCE([setenv])
20 if test $ac_cv_func_setenv = no; then
21 HAVE_SETENV=0
22 else
23 AC_CACHE_CHECK([whether setenv validates arguments],
24 [gl_cv_func_setenv_works],
25 [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <string.h>
29 ]], [[
30 if (setenv ("", "", 0) != -1) return 1;
31 if (errno != EINVAL) return 2;
32 if (setenv ("a", "=", 1) != 0) return 3;
33 if (strcmp (getenv ("a"), "=") != 0) return 4;
34 ]])],
35 [gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no],
36 [gl_cv_func_setenv_works="guessing no"])])
37 if test "$gl_cv_func_setenv_works" != yes; then
38 REPLACE_SETENV=1
39 AC_LIBOBJ([setenv])
40 fi
41 fi
42 gl_PREREQ_SETENV
43])
44
45AC_DEFUN([gl_FUNC_UNSETENV],
46[
47 AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
48 AC_CHECK_FUNCS([unsetenv])
49 if test $ac_cv_func_unsetenv = no; then
50 HAVE_UNSETENV=0
51 AC_LIBOBJ([unsetenv])
52 gl_PREREQ_UNSETENV
53 else
54 dnl Some BSDs return void, failing to do error checking.
55 AC_CACHE_CHECK([for unsetenv() return type], [gt_cv_func_unsetenv_ret],
56 [AC_TRY_COMPILE([#include <stdlib.h>
57extern
58#ifdef __cplusplus
59"C"
60#endif
61#if defined(__STDC__) || defined(__cplusplus)
62int unsetenv (const char *name);
63#else
64int unsetenv();
65#endif
66], , gt_cv_func_unsetenv_ret='int', gt_cv_func_unsetenv_ret='void')])
67 if test $gt_cv_func_unsetenv_ret = 'void'; then
68 AC_DEFINE([VOID_UNSETENV], [1], [Define to 1 if unsetenv returns void
69 instead of int.])
70 REPLACE_UNSETENV=1
71 AC_LIBOBJ([unsetenv])
72 fi
73
74 dnl Solaris 10 unsetenv does not remove all copies of a name.
75 AC_CACHE_CHECK([whether unsetenv works on duplicates],
76 [gl_cv_func_unsetenv_works],
77 [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
78 #include <stdlib.h>
79 ]], [[
80 char entry[] = "b=2";
81 if (putenv ((char *) "a=1")) return 1;
82 if (putenv (entry)) return 2;
83 entry[0] = 'a';
84 unsetenv ("a");
85 if (getenv ("a")) return 3;
86 ]])],
87 [gl_cv_func_unsetenv_works=yes], [gl_cv_func_unsetenv_works=no],
88 [gl_cv_func_unsetenv_works="guessing no"])])
89 if test "$gl_cv_func_unsetenv_works" != yes; then
90 REPLACE_UNSETENV=1
91 AC_LIBOBJ([unsetenv])
92 fi
93 fi
94])
95
96# Prerequisites of lib/setenv.c.
97AC_DEFUN([gl_PREREQ_SETENV],
98[
99 AC_REQUIRE([AC_FUNC_ALLOCA])
100 AC_REQUIRE([gl_ENVIRON])
101 AC_CHECK_HEADERS_ONCE([unistd.h])
102 AC_CHECK_HEADERS([search.h])
103 AC_CHECK_FUNCS([tsearch])
104])
105
106# Prerequisites of lib/unsetenv.c.
107AC_DEFUN([gl_PREREQ_UNSETENV],
108[
109 AC_REQUIRE([gl_ENVIRON])
110 AC_CHECK_HEADERS_ONCE([unistd.h])
111])