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# alloca.m4 serial 4 (gettext-0.18.2)
dnl Copyright (C) 2002-2003, 2006, 2011, 2015-2016 Free Software Foundation,
dnl 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.
AC_DEFUN([gl_FUNC_ALLOCA],
[
dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
AC_REQUIRE([AC_PROG_CPP])
AC_REQUIRE([AC_PROG_EGREP])
AC_REQUIRE([AC_FUNC_ALLOCA])
if test $ac_cv_func_alloca_works = no; then
gl_PREREQ_ALLOCA
fi
# Define an additional variable used in the Makefile substitution.
AC_EGREP_CPP([Need own alloca], [
#if defined __GNUC__ || defined _MSC_VER || !HAVE_ALLOCA_H
Need own alloca
#endif
],
ALLOCA_H=alloca.h,
ALLOCA_H=)
AC_SUBST([ALLOCA_H])
AM_CONDITIONAL([GL_GENERATE_ALLOCA_H], [test -n "$ALLOCA_H"])
])
# Prerequisites of lib/alloca.c.
# STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
AC_DEFUN([gl_PREREQ_ALLOCA], [
AC_CHECK_HEADERS_ONCE(stdlib.h string.h)
:
])
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