diff options
Diffstat (limited to 'm4/ax_restore_flags_with_prefix.m4')
| -rw-r--r-- | m4/ax_restore_flags_with_prefix.m4 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/m4/ax_restore_flags_with_prefix.m4 b/m4/ax_restore_flags_with_prefix.m4 new file mode 100644 index 0000000..9803210 --- /dev/null +++ b/m4/ax_restore_flags_with_prefix.m4 @@ -0,0 +1,66 @@ +# ================================================================================ +# http://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 <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. + +#serial 1 + +m4_define([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))]) +]) |