| Message ID | 20220523200222.711011-1-keescook@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | gcc-plugins: Require utsrelease.h before scripts target | expand |
On Tue, May 24, 2022 at 5:02 AM Kees Cook <keescook@chromium.org> wrote: > > The "utsrelease.h" target was in parallel with the "scripts" target, > which meant -j1 or unlucky parallel builds from a distclean state would > fail to build the GCC plugins. > > Reported-by: kernel test robot <lkp@intel.com> > Link: https://lore.kernel.org/linux-mm/202205230239.EZxeZ3Fv-lkp@intel.com > Reported-by: Guenter Roeck <linux@roeck-us.net> > Link: https://lore.kernel.org/lkml/YouX6g1T7w3FDeM8@cmpxchg.org > Fixes: 61f60bac8c05 ("gcc-plugins: Change all version strings match kernel") > Cc: Guenter Roeck <linux@roeck-us.net> > Cc: Masahiro Yamada <masahiroy@kernel.org> > Cc: linux-kbuild@vger.kernel.org > Signed-off-by: Kees Cook <keescook@chromium.org> > --- > Makefile | 2 +- > scripts/gcc-plugins/Makefile | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Makefile b/Makefile > index 91c91fcf3c24..c04420d5aa3d 100644 > --- a/Makefile > +++ b/Makefile > @@ -1175,7 +1175,7 @@ include/config/kernel.release: FORCE > # Carefully list dependencies so we do not try to build scripts twice > # in parallel > PHONY += scripts > -scripts: scripts_basic scripts_dtc > +scripts: include/generated/utsrelease.h scripts_basic scripts_dtc > $(Q)$(MAKE) $(build)=$(@) > > # Things we need to do before we recursively start building the kernel > diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile > index 6f0aecad5d67..c29334669a16 100644 > --- a/scripts/gcc-plugins/Makefile > +++ b/scripts/gcc-plugins/Makefile > @@ -64,5 +64,5 @@ $(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $ > quiet_cmd_plugin_cxx_o_c = HOSTCXX $@ > cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< > > -$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE > +$(plugin-objs): $(obj)/%.o: $(src)/%.c $(objdir)/include/generated/utsrelease.h FORCE This change is unneeded. The header dependencies are automatically generated by the -MMD option. plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \ > $(call if_changed_dep,plugin_cxx_o_c) > -- > 2.32.0 >
Hi Kees On Tue, May 24, 2022 at 5:20 PM Masahiro Yamada <masahiroy@kernel.org> wrote: > > On Tue, May 24, 2022 at 5:02 AM Kees Cook <keescook@chromium.org> wrote: > > > > The "utsrelease.h" target was in parallel with the "scripts" target, > > which meant -j1 or unlucky parallel builds from a distclean state would > > fail to build the GCC plugins. > > > > Reported-by: kernel test robot <lkp@intel.com> > > Link: https://lore.kernel.org/linux-mm/202205230239.EZxeZ3Fv-lkp@intel.com > > Reported-by: Guenter Roeck <linux@roeck-us.net> > > Link: https://lore.kernel.org/lkml/YouX6g1T7w3FDeM8@cmpxchg.org > > Fixes: 61f60bac8c05 ("gcc-plugins: Change all version strings match kernel") > > Cc: Guenter Roeck <linux@roeck-us.net> > > Cc: Masahiro Yamada <masahiroy@kernel.org> > > Cc: linux-kbuild@vger.kernel.org > > Signed-off-by: Kees Cook <keescook@chromium.org> This will work but I do not want to complex the build order. I'd like to suggest to use KERNELVERSION. Please consider this as an alternative. https://lore.kernel.org/lkml/20220524135541.1453693-1-masahiroy@kernel.org/T/#u > > --- > > Makefile | 2 +- > > scripts/gcc-plugins/Makefile | 2 +- > > 2 files changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/Makefile b/Makefile > > index 91c91fcf3c24..c04420d5aa3d 100644 > > --- a/Makefile > > +++ b/Makefile > > @@ -1175,7 +1175,7 @@ include/config/kernel.release: FORCE > > # Carefully list dependencies so we do not try to build scripts twice > > # in parallel > > PHONY += scripts > > -scripts: scripts_basic scripts_dtc > > +scripts: include/generated/utsrelease.h scripts_basic scripts_dtc > > $(Q)$(MAKE) $(build)=$(@) > > > > # Things we need to do before we recursively start building the kernel > > diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile > > index 6f0aecad5d67..c29334669a16 100644 > > --- a/scripts/gcc-plugins/Makefile > > +++ b/scripts/gcc-plugins/Makefile > > @@ -64,5 +64,5 @@ $(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $ > > quiet_cmd_plugin_cxx_o_c = HOSTCXX $@ > > cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< > > > > -$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE > > +$(plugin-objs): $(obj)/%.o: $(src)/%.c $(objdir)/include/generated/utsrelease.h FORCE > > > This change is unneeded. > > The header dependencies are automatically generated > by the -MMD option. > > plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \ > > > > > > > > $(call if_changed_dep,plugin_cxx_o_c) > > -- > > 2.32.0 > > > > > -- > Best Regards > Masahiro Yamada
diff --git a/Makefile b/Makefile index 91c91fcf3c24..c04420d5aa3d 100644 --- a/Makefile +++ b/Makefile @@ -1175,7 +1175,7 @@ include/config/kernel.release: FORCE # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts -scripts: scripts_basic scripts_dtc +scripts: include/generated/utsrelease.h scripts_basic scripts_dtc $(Q)$(MAKE) $(build)=$(@) # Things we need to do before we recursively start building the kernel diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile index 6f0aecad5d67..c29334669a16 100644 --- a/scripts/gcc-plugins/Makefile +++ b/scripts/gcc-plugins/Makefile @@ -64,5 +64,5 @@ $(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $ quiet_cmd_plugin_cxx_o_c = HOSTCXX $@ cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< -$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE +$(plugin-objs): $(obj)/%.o: $(src)/%.c $(objdir)/include/generated/utsrelease.h FORCE $(call if_changed_dep,plugin_cxx_o_c)
The "utsrelease.h" target was in parallel with the "scripts" target, which meant -j1 or unlucky parallel builds from a distclean state would fail to build the GCC plugins. Reported-by: kernel test robot <lkp@intel.com> Link: https://lore.kernel.org/linux-mm/202205230239.EZxeZ3Fv-lkp@intel.com Reported-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/lkml/YouX6g1T7w3FDeM8@cmpxchg.org Fixes: 61f60bac8c05 ("gcc-plugins: Change all version strings match kernel") Cc: Guenter Roeck <linux@roeck-us.net> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: linux-kbuild@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- Makefile | 2 +- scripts/gcc-plugins/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)