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Date: Sat, 15 Sep 2007 01:30:21 +0200 From: Rene Herman <rene.herman@...il.com> To: "H. Peter Anvin" <hpa@...or.com> CC: Kai Germaschewski <kai@...maschewski.name>, Sam Ravnborg <sam@...nborg.org>, Linux Kernel <linux-kernel@...r.kernel.org>, ALSA devel <alsa-devel@...a-project.org> Subject: Re: Per option CFLAGS? On 09/15/2007 01:13 AM, H. Peter Anvin wrote: > Rene Herman wrote: >> I have a single file foo.c that I want to generate two (ALSA) modules >> from, snd-foo2000.ko and snd-foo2001.ko, by compiling with either >> FOO2000 or FOO2001 defined. >> >> I can do this, and ALSA does this a few times, by providing dummy >> foo2000.c and foo2001.c files, like: >> >> === foo2000.c >> #define FOO2000 >> #include "foo.c" >> === >> >> and a regular Makefile >> >> === >> foo2000-objs := foo2000.o >> foo2001-objs := foo2001.o >> >> obj-$(CONFIG_SND_FOO2000) += snd-foo2000.o >> obj-$(CONFIG_SND_F002001) += snd-foo2001.o >> === >> >> That #include is a little lame though. Is there a nicer way? I noticed >> the per-file CFLAGS, but given that it's one source file for both, that >> doesn't fit. >> > > The stub source file is usually considered a good way to do this. Mmm. If I'll have to live with it, I can, but thought I'd ask if there was some nice build trickery available instead. Rene. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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