# ================================================================================= | |
# https://www.gnu.org/software/autoconf-archive/ax_restore_flags_with_prefix.html | |
# ================================================================================= | |
# | |
# SYNOPSIS | |
# | |
# AX_RESTORE_FLAGS_WITH_PREFIX(PREFIX, LIST-OF-FLAGS) | |
# | |
# DESCRIPTION | |
# | |
# Restore the flags saved by AX_SAVE_FLAGS_WITH_PREFIX. | |
# | |
# Expansion example: AX_RESTORE_FLAGS_WITH_PREFIX([GL], [[CFLAGS],[LIBS]]) | |
# expands to | |
# | |
# CFLAGS="$gl_saved_flag_cflags" | |
# LIBS="$gl_saved_flag_libs" | |
# | |
# One common use case is to define a package specific wrapper macro around | |
# this one, and also restore other variables if needed. For example: | |
# | |
# AC_DEFUN([_AX_CHECK_GL_RESTORE_FLAGS], [ | |
# AX_RESTORE_FLAGS_WITH_PREFIX([GL],[$1]) | |
# AC_LANG_POP([C]) | |
# ]) | |
# | |
# # Restores CFLAGS, LIBS and language state | |
# _AX_CHECK_GL_RESTORE_FLAGS([[CFLAGS],[LIBS]]) | |
# | |
# LICENSE | |
# | |
# Copyright (c) 2016 Felix Chern <idryman@gmail.com> | |
# | |
# 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 <https://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. | |
#serial 3 | |
AC_DEFUN([AX_RESTORE_FLAGS_WITH_PREFIX],[ | |
m4_ifval([$2], [ | |
m4_car($2)="$_ax_[]m4_tolower($1)_saved_flag_[]m4_tolower(m4_car($2))" | |
$0($1, m4_cdr($2))]) | |
]) |