diff options
Diffstat (limited to 'm4/ax_restore_flags.m4')
| -rw-r--r-- | m4/ax_restore_flags.m4 | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/m4/ax_restore_flags.m4 b/m4/ax_restore_flags.m4 index cf03cae7..aafd3638 100644 --- a/m4/ax_restore_flags.m4 +++ b/m4/ax_restore_flags.m4 @@ -4,28 +4,49 @@ # # SYNOPSIS # -# AX_RESTORE_FLAGS() +# AX_RESTORE_FLAGS([namespace]) # # DESCRIPTION # -# Restore common compilation flags from temporary variables +# Restore common compilation flags from temporary variables. +# +# Compilation flags includes: CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS, LIBS, +# OBJCFLAGS. +# +# By default these flags are restored to a global (empty) namespace, but +# user could restore from specific NAMESPACE by using +# AX_RESTORE_FLAGS(NAMESPACE) macro. +# +# Typical usage is like: +# +# AX_SAVE_FLAGS(mypackage) +# CPPFLAGS="-Imypackagespath ${CPPFLAGS}" +# dnl ... do some detection ... +# AX_RESTORE_FLAGS(mypackage) # # LICENSE # # Copyright (c) 2009 Filippo Giunchedi <filippo@esaurito.net> +# Copyright (c) 2011 The Board of Trustees of the Leland Stanford Junior University +# Copyright (c) 2011 Russ Allbery <rra@stanford.edu> +# Copyright (c) 2013 Bastien ROUCARIES <roucaries.bastien+autoconf@gmail.com> # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 3 +#serial 6 + +# save one flag in name space +AC_DEFUN([_AX_RESTORE_ONE_FLAG],[dnl + AS_VAR_PUSHDEF([_ax_restore_flag_var], [$2[]_$1[]_ax_save_flags]) + AS_VAR_COPY($2[],_ax_restore_flag_var) + AS_VAR_POPDEF([_ax_restore_flag_var]) +]) -AC_DEFUN([AX_RESTORE_FLAGS], [ - CPPFLAGS="${CPPFLAGS_save}" - CFLAGS="${CFLAGS_save}" - CXXFLAGS="${CXXFLAGS_save}" - OBJCFLAGS="${OBJCFLAGS_save}" - LDFLAGS="${LDFLAGS_save}" - LIBS="${LIBS_save}" +AC_DEFUN([AX_RESTORE_FLAGS], [dnl + m4_foreach([FLAG], dnl + [_AX_SAVE_FLAGS_LIST()], dnl + [_AX_RESTORE_ONE_FLAG([$1],FLAG)]) ]) |