projects / babeltrace.git / blame
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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 | ||
| 57 | AC_DEFUN([AX_APPEND_LINK_FLAGS], | |
| 58 | [AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) | |
| 59 | AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) | |
| 60 | for flag in $1; do | |
| 61 | AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3]) | |
| 62 | done | |
| 63 | ])dnl AX_APPEND_LINK_FLAGS |