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# ============================================================================ |
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# https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html |
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# ============================================================================ |
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# |
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# SYNOPSIS |
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# |
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# AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) |
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# |
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# DESCRIPTION |
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# |
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# For every FLAG1, FLAG2 it is checked whether the compiler works with the |
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# flag. If it does, the flag is added FLAGS-VARIABLE |
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# |
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# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. |
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# CFLAGS) is used. During the check the flag is always added to the |
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# current language's flags. |
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# |
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# If EXTRA-FLAGS is defined, it is added to the current language's default |
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# flags (e.g. CFLAGS) when the check is done. The check is thus made with |
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# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to |
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# force the compiler to issue an error when a bad flag is given. |
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# |
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE. |
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# |
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# NOTE: This macro depends on the AX_APPEND_FLAG and |
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# AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with |
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# AX_APPEND_LINK_FLAGS. |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> |
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# |
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# This program is free software: you can redistribute it and/or modify it |
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# under the terms of the GNU General Public License as published by the |
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# Free Software Foundation, either version 3 of the License, or (at your |
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# option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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# Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License along |
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# with this program. If not, see <https://www.gnu.org/licenses/>. |
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# |
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# As a special exception, the respective Autoconf Macro's copyright owner |
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# gives unlimited permission to copy, distribute and modify the configure |
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# scripts that are the output of Autoconf when processing the Macro. You |
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# need not follow the terms of the GNU General Public License when using |
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# or distributing such scripts, even though portions of the text of the |
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# Macro appear in them. The GNU General Public License (GPL) does govern |
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# all other use of the material that constitutes the Autoconf Macro. |
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# |
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# This special exception to the GPL applies to versions of the Autoconf |
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# Macro released by the Autoconf Archive. When you make and distribute a |
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# modified version of the Autoconf Macro, you may extend this special |
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# exception to the GPL to apply to your modified version as well. |
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|
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#serial 6 |
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|
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AC_DEFUN([AX_APPEND_COMPILE_FLAGS], |
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[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) |
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AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) |
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for flag in $1; do |
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AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4]) |
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done |
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])dnl AX_APPEND_COMPILE_FLAGS |
