On Sat, May 03, 2025 at 05:41:43PM +0900, Masahiro Yamada wrote: > Sometimes we need to trigger a global rebuild of the kernel tree - > for instance, when any of the GCC plugins changes. [1] > > This commit provides a simple mechanism to force a global rebuild > using a single header file. > > The top-level Makefile creates include/generated/global-rebuild.h if > it does not exist, and this file is included by all kernel sources. > > You can touch it in a build rule when a global rebuild is required. > > The following is an example change to the GCC plugin build rule. > > quiet_cmd_plugin_cxx_so_c = HOSTCXX $@ > - cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) > -o $@ $< > + cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) > -o $@ $<; touch include/generated/global-rebuild.h > > Link: > https://lore.kernel.org/linux-kbuild/cak7lnatdbxc+3hq6zosk9t-lkf4msnmeun6s5eqovwnbqw_...@mail.gmail.com/T/#me069145443a17f0b464c13814424dbba0d970863 > [1] > Cc: Kees Cook <k...@kernel.org> > Signed-off-by: Masahiro Yamada <masahi...@kernel.org> > --- > > Makefile | 9 ++++++++- > arch/um/Makefile | 3 ++- > 2 files changed, 10 insertions(+), 2 deletions(-) >
Looks good to me, thanks! Reviewed-by: Nicolas Schier <n.sch...@avm.de> Tested-by: Nicolas Schier <n.sch...@avm.de>
