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