[Openal-devel] How to set CFLAGS for specific files?

[Prakash Punnoor]

Am Freitag 27 Oktober 2006 09:22 schrieb Sven Panne:
> Am Freitag, 27. Oktober 2006 07:31 schrieb Prakash Punnoor:
> > I changed the SIMD enabling routines in CMake to make it possible to
> > generate portable code with gcc. For that it was needed that the SIMD
> > CFLAGS only get applied to the c source files which contain SIMD and not
> > to the rest of the source files. Because otherwise (esp with SSE2) gcc
> > could emit SSE code for float maths...  Now I want to do the same for the
> > autotools project, but I don't know an easy way. Any advise?
>
> The relevant documentation is here:
> http://sources.redhat.com/automake/automake.html#Program-and-Library-Variab
>les
>
> In a nutshell: If you want special CFLAGS for foo.c, add
>
>    foo_CFLAGS = -my -special -CFLAGS

This doesn't work for me (as a test):

libopenal_la_SOURCES += arch/i386/mixaudio16_sse2_prk.c 
arch/i386/mixaudio16_sse2_prk.h
mixaudio16_sse2_prk_CFLAGS = $(AM_CFLAGS) -msse3

The flags stay the same. Above link also only lists the command for adding per 
target flags, not per source.

> Just a small remark: src/arch/i386/Makefile.am looks a little bit
> complicated, why e.g. are the COMPILE/LTCOMPILE/CCLD/LINK definitions
> necessary?

Well, I admit I don't understand too much of it. I basically ripped it from 
lame nasm support Makefile.am. Feel free to trim it down.
-- 
(°=                 =°)
//\ Prakash Punnoor /\\
V_/                 \_V
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