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# ===========================================================================
# http://www.nongnu.org/autoconf-archive/ax_not_enable_frame_pointer.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_NOT_ENABLE_FRAME_POINTER ([shellvar])
#
# DESCRIPTION
#
# add --enable-frame-pointer option, the default will add the gcc
# -fomit-frame-pointer option to the shellvar (per default CFLAGS) and
# remove the " -g " debuginfo option from it. In other words, the default
# is "--disable-frame-pointer"
#
# LICENSE
#
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
AC_DEFUN([AX_NOT_ENABLE_FRAME_POINTER],[dnl
AS_VAR_PUSHDEF([VAR],[enable_frame_pointer])dnl
AC_MSG_CHECKING([m4_ifval($1,$1,CFLAGS) frame-pointer])
AC_ARG_ENABLE([frame-pointer], AC_HELP_STRING(
[--enable-frame-pointer],[enable callframe generation for debugging]))
case ".$VAR" in
.|.no|.no,*) test ".$VAR" = "." && VAR="no"
m4_ifval($1,$1,CFLAGS)=`echo dnl
" $m4_ifval($1,$1,CFLAGS) " | sed -e 's/ -g / /'`
if test ".$GCC" = ".yes" ; then
m4_ifval($1,$1,CFLAGS)="$m4_ifval($1,$1,CFLAGS) -fomit-frame-pointer"
AC_MSG_RESULT([$VAR, -fomit-frame-pointer added])
else
AC_MSG_RESULT([$VAR, -g removed])
fi ;;
*) AC_MSG_RESULT([$VAR, kept]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
])
|
