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# malloc.m4 serial 9
dnl Copyright (C) 2007, 2009 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.
# gl_FUNC_MALLOC_POSIX
# --------------------
# Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it
# fails), and replace malloc if it is not.
AC_DEFUN([gl_FUNC_MALLOC_POSIX],
[
AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
if test $gl_cv_func_malloc_posix = yes; then
HAVE_MALLOC_POSIX=1
AC_DEFINE([HAVE_MALLOC_POSIX], [1],
[Define if the 'malloc' function is POSIX compliant.])
else
AC_LIBOBJ([malloc])
HAVE_MALLOC_POSIX=0
fi
AC_SUBST([HAVE_MALLOC_POSIX])
])
# Test whether malloc, realloc, calloc are POSIX compliant,
# Set gl_cv_func_malloc_posix to yes or no accordingly.
AC_DEFUN([gl_CHECK_MALLOC_POSIX],
[
AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant],
[gl_cv_func_malloc_posix],
[
dnl It is too dangerous to try to allocate a large amount of memory:
dnl some systems go to their knees when you do that. So assume that
dnl all Unix implementations of the function are POSIX compliant.
AC_TRY_COMPILE([],
[#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
choke me
#endif
], [gl_cv_func_malloc_posix=yes], [gl_cv_func_malloc_posix=no])
])
])
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