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42 lines
1.4 KiB
Plaintext
42 lines
1.4 KiB
Plaintext
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# malloc.m4 serial 8
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dnl Copyright (C) 2007 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# gl_FUNC_MALLOC_POSIX
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# --------------------
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# Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it
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# fails), and replace malloc if it is not.
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AC_DEFUN([gl_FUNC_MALLOC_POSIX],
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[
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AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
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if test $gl_cv_func_malloc_posix = yes; then
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HAVE_MALLOC_POSIX=1
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AC_DEFINE([HAVE_MALLOC_POSIX], 1,
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[Define if the 'malloc' function is POSIX compliant.])
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else
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AC_LIBOBJ([malloc])
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HAVE_MALLOC_POSIX=0
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fi
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AC_SUBST([HAVE_MALLOC_POSIX])
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])
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# Test whether malloc, realloc, calloc are POSIX compliant,
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# Set gl_cv_func_malloc_posix to yes or no accordingly.
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AC_DEFUN([gl_CHECK_MALLOC_POSIX],
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[
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AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant],
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[gl_cv_func_malloc_posix],
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[
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dnl It is too dangerous to try to allocate a large amount of memory:
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dnl some systems go to their knees when you do that. So assume that
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dnl all Unix implementations of the function are POSIX compliant.
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AC_TRY_COMPILE([],
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[#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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choke me
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#endif
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], [gl_cv_func_malloc_posix=yes], [gl_cv_func_malloc_posix=no])
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])
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])
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