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ax_cflags_aix_option

Synopsis

   AX_CFLAGS_AIX_OPTION (optionflag [,[shellvar][,[A][,[NA]]])

Description

AX_CFLAGS_AIX_OPTION(-qubicle) would show a message as like "checking CFLAGS for aix/cc -qubicle ... yes" and adds the optionflag to CFLAGS if it is understood. You can override the shellvar-default of CFLAGS of course. The order of arguments stems from the explicit macros like AX_CFLAGS_WARN_ALL.

The cousin AX_CXXFLAGS_AIX_OPTION would check for an option to add to CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it is possible to use different compilers for C and C++).

The macro is a lot simpler than any special AX_CFLAGS_* macro (or ax_cxx_rtti.m4 macro) but allows to check for arbitrary options. However, if you use this macro in a few places, it would be great if you would make up a new function-macro and submit it to the ac-archive.

   - $1 option-to-check-for : required ("-option" as non-value)
 - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
 - $3 action-if-found : add value to shellvariable
 - $4 action-if-not-found : nothing

note: in earlier versions, $1-$2 were swapped. We try to detect the situation and accept a $2=~/-/ as being the old option-to-check-for.

see also: AX_CFLAGS_GCC_OPTION for the widely used original variant.

Source Code

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

License

Copyright © 2008 Guido U. Draheim guidod@gmx.de

Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without any warranty.