On Mon 2013-04-15 13:16:36, richard -rw- weinberger wrote: > On Mon, Apr 15, 2013 at 9:58 AM, Ley Foon Tan <lf...@altera.com> wrote: > > > > > > Change KBUILD_CFLAGS to -O0 in Makefile and got the compilation error as > > below. > > Is the Linux kernel support -O0 optimization flag? > > No. If I'm not mistaken we need this to make sure that the compiler > inlines some functions. > > In your case the compiler failed to compute the BUILD_BUG() macro correctly. > It depends also on optimization.
Actually... You probably could replace BUILD_BUG() with nop. Bugs are not expected to happen, right? you'll probably hit something else... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/