1# ===========================================================================
2#   http://www.gnu.org/software/autoconf-archive/ax_cflags_aix_option.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7#   AX_CFLAGS_AIX_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
8#
9# DESCRIPTION
10#
11#   AX_CFLAGS_AIX_OPTION(-qubicle) would show a message as like "checking
12#   CFLAGS for aix/cc -qubicle ... yes" and adds the optionflag to CFLAGS if
13#   it is understood. You can override the shellvar-default of CFLAGS of
14#   course. The order of arguments stems from the explicit macros like
15#   AX_CFLAGS_WARN_ALL.
16#
17#   The cousin AX_CXXFLAGS_AIX_OPTION would check for an option to add to
18#   CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
19#   is possible to use different compilers for C and C++).
20#
21#   The macro is a lot simpler than any special AX_CFLAGS_* macro (or
22#   ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
23#   However, if you use this macro in a few places, it would be great if you
24#   would make up a new function-macro and submit it to the ac-archive.
25#
26#    - $1 option-to-check-for : required ("-option" as non-value)
27#    - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
28#    - $3 action-if-found : add value to shellvariable
29#    - $4 action-if-not-found : nothing
30#
31#   note: in earlier versions, $1-$2 were swapped. We try to detect the
32#   situation and accept a $2=~/-/ as being the old option-to-check-for.
33#
34#   see also: AX_CFLAGS_GCC_OPTION for the widely used original variant.
35#
36# LICENSE
37#
38#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
39#
40#   This program is free software; you can redistribute it and/or modify it
41#   under the terms of the GNU General Public License as published by the
42#   Free Software Foundation; either version 3 of the License, or (at your
43#   option) any later version.
44#
45#   This program is distributed in the hope that it will be useful, but
46#   WITHOUT ANY WARRANTY; without even the implied warranty of
47#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
48#   Public License for more details.
49#
50#   You should have received a copy of the GNU General Public License along
51#   with this program. If not, see <http://www.gnu.org/licenses/>.
52#
53#   As a special exception, the respective Autoconf Macro's copyright owner
54#   gives unlimited permission to copy, distribute and modify the configure
55#   scripts that are the output of Autoconf when processing the Macro. You
56#   need not follow the terms of the GNU General Public License when using
57#   or distributing such scripts, even though portions of the text of the
58#   Macro appear in them. The GNU General Public License (GPL) does govern
59#   all other use of the material that constitutes the Autoconf Macro.
60#
61#   This special exception to the GPL applies to versions of the Autoconf
62#   Macro released by the Autoconf Archive. When you make and distribute a
63#   modified version of the Autoconf Macro, you may extend this special
64#   exception to the GPL to apply to your modified version as well.
65
66#serial 13
67
68AC_DEFUN([AX_FLAGS_AIX_OPTION_PRIVATE], [dnl
69AX_CHECK_COMPILE_FLAG([$1], [flag_ok="yes"], [flag_ok="no"], [-qlanglvl=ansi -qsrcmsg])
70AS_CASE([".$flag_ok"],
71  [.ok|.ok,*], [$3],
72  [.|.no|.no,*], [$4],
73  [m4_default($3,[AX_APPEND_FLAG([$1],[$2])])])
74])
75
76AC_DEFUN([AX_CFLAGS_AIX_OPTION],[
77  AC_LANG_PUSH([C])
78  AX_FLAGS_AIX_OPTION_PRIVATE(ifelse(m4_bregexp([$2],[-]),-1,[[$1],[$2]],[[$2],[$1]]),[$3],[$4])
79  AC_LANG_POP
80])
81
82AC_DEFUN([AX_CXXFLAGS_AIX_OPTION],[
83  AC_LANG_PUSH([C++])
84  AX_FLAGS_AIX_OPTION_PRIVATE(ifelse(m4_bregexp([$2],[-]),-1,[[$1],[$2]],[[$2],[$1]]),[$3],[$4])
85  AC_LANG_POP
86])
87