mirror of
https://github.com/coreutils/coreutils.git
synced 2025-01-03 14:43:22 +08:00
45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
# alloca.m4 serial 4
|
|
dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
|
|
dnl This file is free software, distributed under the terms of the GNU
|
|
dnl General Public License. As a special exception to the GNU General
|
|
dnl Public License, this file may be distributed as part of a program
|
|
dnl that contains a configuration script generated by Autoconf, under
|
|
dnl the same distribution terms as the rest of that program.
|
|
|
|
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.
|
|
if test $ac_cv_working_alloca_h = yes; then
|
|
AC_EGREP_CPP([Need own alloca], [
|
|
#if defined __GNUC__ || defined _AIX || defined _MSC_VER
|
|
Need own alloca
|
|
#endif
|
|
],
|
|
[AC_DEFINE(HAVE_ALLOCA, 1,
|
|
[Define to 1 if you have `alloca' after including <alloca.h>,
|
|
a header that may be supplied by this distribution.])
|
|
ALLOCA_H=alloca.h],
|
|
[ALLOCA_H=])
|
|
else
|
|
ALLOCA_H=alloca.h
|
|
fi
|
|
AC_SUBST([ALLOCA_H])
|
|
|
|
AC_DEFINE(HAVE_ALLOCA_H, 1,
|
|
[Define HAVE_ALLOCA_H for backward compatibility with older code
|
|
that includes <alloca.h> only if HAVE_ALLOCA_H is defined.])
|
|
])
|
|
|
|
# Prerequisites of lib/alloca.c.
|
|
# STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
|
|
AC_DEFUN([gl_PREREQ_ALLOCA], [:])
|