> > I hit the following problem when trying to build a ppc64 Linux kernel > > from svn today: > > > > # gcc -Wp,-MD,scripts/basic/.fixdep.d -Wall -Wmissing-prototypes > > -Wstrict-prototypes -O2 -fomit-frame-pointer -o > > scripts/basic/fixdep scripts/basic/fixdep.c > > The options passed to internal binaries such as cc1 are not a documented > public interface to GCC, so if you pass such options via -Wp you must > expect to need to change your makefiles when the GCC-internal interfaces > change. Instead, you should use the various public interfaces documented > in cppopts.texi, which *are* stable interfaces. I think what you want > here is "-MD -MF scripts/basic/.fixdep.d" with no -Wp.
Well, I know of several projects that rely on -Wp,-MD or -Wp,-MMD, so this change will certainly affect lots of people I suspect. Can't we be friendlier to these projects and keep backward compatibility? Arno
