Display binary location even if source and symbol lookups fail
[babeltrace.git] / m4 / ax_append_link_flags.m4
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1# ===========================================================================
2# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS])
8#
9# DESCRIPTION
10#
11# For every FLAG1, FLAG2 it is checked whether the linker works with the
12# flag. If it does, the flag is added FLAGS-VARIABLE
13#
14# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is
15# used. During the check the flag is always added to the linker's flags.
16#
17# If EXTRA-FLAGS is defined, it is added to the linker's default flags
18# when the check is done. The check is thus made with the flags: "LDFLAGS
19# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
20# issue an error when a bad flag is given.
21#
22# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG.
23# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS.
24#
25# LICENSE
26#
27# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
28#
29# This program is free software: you can redistribute it and/or modify it
30# under the terms of the GNU General Public License as published by the
31# Free Software Foundation, either version 3 of the License, or (at your
32# option) any later version.
33#
34# This program is distributed in the hope that it will be useful, but
35# WITHOUT ANY WARRANTY; without even the implied warranty of
36# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
37# Public License for more details.
38#
39# You should have received a copy of the GNU General Public License along
40# with this program. If not, see <http://www.gnu.org/licenses/>.
41#
42# As a special exception, the respective Autoconf Macro's copyright owner
43# gives unlimited permission to copy, distribute and modify the configure
44# scripts that are the output of Autoconf when processing the Macro. You
45# need not follow the terms of the GNU General Public License when using
46# or distributing such scripts, even though portions of the text of the
47# Macro appear in them. The GNU General Public License (GPL) does govern
48# all other use of the material that constitutes the Autoconf Macro.
49#
50# This special exception to the GPL applies to versions of the Autoconf
51# Macro released by the Autoconf Archive. When you make and distribute a
52# modified version of the Autoconf Macro, you may extend this special
53# exception to the GPL to apply to your modified version as well.
54
55#serial 4
56
57AC_DEFUN([AX_APPEND_LINK_FLAGS],
58[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
59AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
60for flag in $1; do
61 AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3])
62done
63])dnl AX_APPEND_LINK_FLAGS
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