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ax_check_compile_flag

Synopsis

AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])

Description

Check whether the given FLAG works with the current language’s compiler or gives an error. (Warnings, however, are ignored)

ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on success/failure.

If EXTRA-FLAGS is defined, it is added to the current language’s default flags (e.g. CFLAGS) when the check is done. The check is thus made with the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to force the compiler to issue an error when a bad flag is given.

INPUT gives an alternative input source to AC_COMPILE_IFELSE.

NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.

Source Code

Download the latest version of ax_check_compile_flag.m4 or browse the macro’s revision history.

License

Copyright © 2008 Guido U. Draheim guidod@gmx.de
Copyright © 2011 Maarten Bosmans mkbosmans@gmail.com

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

As a special exception, the respective Autoconf Macro’s copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts, even though portions of the text of the Macro appear in them. The GNU General Public License (GPL) does govern all other use of the material that constitutes the Autoconf Macro.

This special exception to the GPL applies to versions of the Autoconf Macro released by the Autoconf Archive. When you make and distribute a modified version of the Autoconf Macro, you may extend this special exception to the GPL to apply to your modified version as well.


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