git.m6w6.name Git - awesomized/libmemcached/blob - m4/ax_restore_flags.m4

   1 # ===========================================================================
   2 #     http://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 6
  40
  41 # save one flag in name space
  42 AC_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
  48 AC_DEFUN([AX_RESTORE_FLAGS], [dnl
  49    m4_foreach([FLAG], dnl
  50               [_AX_SAVE_FLAGS_LIST()], dnl
  51               [_AX_RESTORE_ONE_FLAG([$1],FLAG)])
  52 ])