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# malloc_h.m4 serial 2
dnl Copyright (C) 2020-2021 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.
dnl Written by Bruno Haible.
AC_DEFUN([gl_MALLOC_H],
[
dnl Use AC_REQUIRE here, so that the default behavior below is expanded
dnl once only, before all statements that occur in other macros.
AC_REQUIRE([gl_MALLOC_H_DEFAULTS])
gl_CHECK_NEXT_HEADERS([malloc.h])
if test $ac_cv_header_malloc_h = yes; then
HAVE_MALLOC_H=1
else
HAVE_MALLOC_H=0
fi
AC_SUBST([HAVE_MALLOC_H])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[
#if HAVE_MALLOC_H
# include <malloc.h>
#endif
]], [memalign])
])
AC_DEFUN([gl_MALLOC_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_MALLOC_H_DEFAULTS])
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
AC_DEFUN([gl_MALLOC_H_DEFAULTS],
[
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMALIGN])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_MEMALIGN=1; AC_SUBST([HAVE_MEMALIGN])
REPLACE_MEMALIGN=0; AC_SUBST([REPLACE_MEMALIGN])
])
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