ax_restore_flags.m4 revision 1.1.1.1 
1# ===========================================================================
2#     https://www.gnu.org/software/autoconf-archive/ax_restore_flags.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7#   AX_RESTORE_FLAGS([namespace])
8#
9# DESCRIPTION
10#
11#   Restore common compilation flags from temporary variables.
12#
13#   Compilation flags includes: CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS, LIBS,
14#   OBJCFLAGS.
15#
16#   By default these flags are restored to a global (empty) namespace, but
17#   user could restore from specific NAMESPACE by using
18#   AX_RESTORE_FLAGS(NAMESPACE) macro.
19#
20#   Typical usage is like:
21#
22#     AX_SAVE_FLAGS(mypackage)
23#     CPPFLAGS="-Imypackagespath ${CPPFLAGS}"
24#     dnl ... do some detection ...
25#     AX_RESTORE_FLAGS(mypackage)
26#
27# LICENSE
28#
29#   Copyright (c) 2009 Filippo Giunchedi <filippo@esaurito.net>
30#   Copyright (c) 2011 The Board of Trustees of the Leland Stanford Junior University
31#   Copyright (c) 2011 Russ Allbery <rra@stanford.edu>
32#   Copyright (c) 2013 Bastien ROUCARIES <roucaries.bastien+autoconf@gmail.com>
33#
34#   Copying and distribution of this file, with or without modification, are
35#   permitted in any medium without royalty provided the copyright notice
36#   and this notice are preserved. This file is offered as-is, without any
37#   warranty.
38
39#serial 7
40
41# save one flag in name space
42AC_DEFUN([_AX_RESTORE_ONE_FLAG],[dnl
43  AS_VAR_PUSHDEF([_ax_restore_flag_var], [$2[]_$1[]_ax_save_flags])
44  AS_VAR_COPY($2[],_ax_restore_flag_var)
45  AS_VAR_POPDEF([_ax_restore_flag_var])
46])
47
48AC_DEFUN([AX_RESTORE_FLAGS], [dnl
49   m4_foreach([FLAG], dnl
50	      [_AX_SAVE_FLAGS_LIST()], dnl
51	      [_AX_RESTORE_ONE_FLAG([$1],FLAG)])
52])
53