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f240aacb LC |
1 | # malloc.m4 serial 9 |
2 | dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc. | |
3 | dnl This file is free software; the Free Software Foundation | |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | # gl_FUNC_MALLOC_POSIX | |
8 | # -------------------- | |
9 | # Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it | |
10 | # fails), and replace malloc if it is not. | |
11 | AC_DEFUN([gl_FUNC_MALLOC_POSIX], | |
12 | [ | |
13 | AC_REQUIRE([gl_CHECK_MALLOC_POSIX]) | |
14 | if test $gl_cv_func_malloc_posix = yes; then | |
15 | HAVE_MALLOC_POSIX=1 | |
16 | AC_DEFINE([HAVE_MALLOC_POSIX], [1], | |
17 | [Define if the 'malloc' function is POSIX compliant.]) | |
18 | else | |
19 | AC_LIBOBJ([malloc]) | |
20 | HAVE_MALLOC_POSIX=0 | |
21 | fi | |
22 | AC_SUBST([HAVE_MALLOC_POSIX]) | |
23 | ]) | |
24 | ||
25 | # Test whether malloc, realloc, calloc are POSIX compliant, | |
26 | # Set gl_cv_func_malloc_posix to yes or no accordingly. | |
27 | AC_DEFUN([gl_CHECK_MALLOC_POSIX], | |
28 | [ | |
29 | AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant], | |
30 | [gl_cv_func_malloc_posix], | |
31 | [ | |
32 | dnl It is too dangerous to try to allocate a large amount of memory: | |
33 | dnl some systems go to their knees when you do that. So assume that | |
34 | dnl all Unix implementations of the function are POSIX compliant. | |
35 | AC_TRY_COMPILE([], | |
36 | [#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ | |
37 | choke me | |
38 | #endif | |
39 | ], [gl_cv_func_malloc_posix=yes], [gl_cv_func_malloc_posix=no]) | |
40 | ]) | |
41 | ]) |