On Wed, 07 May 2025, Nicolas Schier wrote: > On Sat, 03 May 2025, Kees Cook wrote: > > > There was no dependency between the plugins changing and the rest of the > > kernel being built. This could cause strange behaviors as instrumentation > > could vary between targets depending on when they were built. > > > > Generate a new header file, gcc-plugins.h, any time the GCC plugins > > change. Include the header file in compiler-version.h when its associated > > feature name, GCC_PLUGINS, is defined. This will be picked up by fixdep > > and force rebuilds where needed. > > > > Add a generic "touch" kbuild command, which will be used again in > > a following patch. Add a "normalize_path" string helper to make the > > "TOUCH" output less ugly. > > > > Signed-off-by: Kees Cook <[email protected]> > > --- > > Cc: Masahiro Yamada <[email protected]> > > Cc: Nicolas Schier <[email protected]> > > Cc: Nathan Chancellor <[email protected]> > > Cc: <[email protected]> > > Cc: <[email protected]> > > --- > > include/linux/compiler-version.h | 4 ++++ > > scripts/Makefile.gcc-plugins | 2 +- > > scripts/Makefile.lib | 18 ++++++++++++++++++ > > scripts/gcc-plugins/Makefile | 4 ++++ > > 4 files changed, 27 insertions(+), 1 deletion(-) > > > > diff --git a/include/linux/compiler-version.h > > b/include/linux/compiler-version.h > > index 573fa85b6c0c..74ea11563ce3 100644 > > --- a/include/linux/compiler-version.h > > +++ b/include/linux/compiler-version.h > > @@ -12,3 +12,7 @@ > > * and add dependency on include/config/CC_VERSION_TEXT, which is touched > > * by Kconfig when the version string from the compiler changes. > > */ > > + > > +#ifdef GCC_PLUGINS > > Out of curiousity: Why can't we use CONFIG_GCC_PLUGINS here?
... because compiler-version.h is included before kconfig.h (which includes autoconf.h). Sorry for the noise.
