| Message ID | 20240312-gcc-plugins-gmp-v1-2-c5e082437b9e@linutronix.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | gcc-plugins: disable plugins when gmp.h is unavailable | expand |
On Tue, Mar 12, 2024 at 04:03:30PM +0100, Thomas Weißschuh wrote: > The header gmp.h is meant to be picked up from the host system. > > When it is unavailable the plugin build fails: > > In file included from ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/gcc-plugin.h:28, > from ../scripts/gcc-plugins/gcc-common.h:7, > from ../scripts/gcc-plugins/stackleak_plugin.c:30: > ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/system.h:703:10: fatal error: gmp.h: No such file or directory > 703 | #include <gmp.h> > | ^~~~~~~ > > Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> > --- > scripts/gcc-plugins/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig > index e383cda05367..a664fb5cdde5 100644 > --- a/scripts/gcc-plugins/Kconfig > +++ b/scripts/gcc-plugins/Kconfig > @@ -10,6 +10,7 @@ menuconfig GCC_PLUGINS > depends on HAVE_GCC_PLUGINS > depends on CC_IS_GCC > depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h) > + depends on $(host-cc-option,-include gmp.h) Why does the prior depends not fail? That's where plugin detection is happening.
On Wed, Mar 13, 2024 at 6:53 AM Kees Cook <keescook@chromium.org> wrote: > > On Tue, Mar 12, 2024 at 04:03:30PM +0100, Thomas Weißschuh wrote: > > The header gmp.h is meant to be picked up from the host system. > > > > When it is unavailable the plugin build fails: > > > > In file included from ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/gcc-plugin.h:28, > > from ../scripts/gcc-plugins/gcc-common.h:7, > > from ../scripts/gcc-plugins/stackleak_plugin.c:30: > > ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/system.h:703:10: fatal error: gmp.h: No such file or directory > > 703 | #include <gmp.h> > > | ^~~~~~~ > > > > Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> > > --- > > scripts/gcc-plugins/Kconfig | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig > > index e383cda05367..a664fb5cdde5 100644 > > --- a/scripts/gcc-plugins/Kconfig > > +++ b/scripts/gcc-plugins/Kconfig > > @@ -10,6 +10,7 @@ menuconfig GCC_PLUGINS > > depends on HAVE_GCC_PLUGINS > > depends on CC_IS_GCC > > depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h) > > + depends on $(host-cc-option,-include gmp.h) > > Why does the prior depends not fail? That's where plugin detection is > happening. > > -- > Kees Cook > This patch set should be rejected. It was already discussed in the past. Just install a proper package, then gcc-plugin will work. https://lore.kernel.org/all/CAHk-=wjjiYjCp61gdAMpDOsUBU-A2hFFKJoVx5VAC7yV4K6WYg@mail.gmail.com/
On Wed, Mar 13, 2024 at 12:47:59PM +0900, Masahiro Yamada wrote: > On Wed, Mar 13, 2024 at 6:53 AM Kees Cook <keescook@chromium.org> wrote: > > > > On Tue, Mar 12, 2024 at 04:03:30PM +0100, Thomas Weißschuh wrote: > > > The header gmp.h is meant to be picked up from the host system. > > > > > > When it is unavailable the plugin build fails: > > > > > > In file included from ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/gcc-plugin.h:28, > > > from ../scripts/gcc-plugins/gcc-common.h:7, > > > from ../scripts/gcc-plugins/stackleak_plugin.c:30: > > > ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/system.h:703:10: fatal error: gmp.h: No such file or directory > > > 703 | #include <gmp.h> > > > | ^~~~~~~ > > > > > > Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> > > > --- > > > scripts/gcc-plugins/Kconfig | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig > > > index e383cda05367..a664fb5cdde5 100644 > > > --- a/scripts/gcc-plugins/Kconfig > > > +++ b/scripts/gcc-plugins/Kconfig > > > @@ -10,6 +10,7 @@ menuconfig GCC_PLUGINS > > > depends on HAVE_GCC_PLUGINS > > > depends on CC_IS_GCC > > > depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h) > > > + depends on $(host-cc-option,-include gmp.h) > > > > Why does the prior depends not fail? That's where plugin detection is > > happening. > > > > -- > > Kees Cook > > This patch set should be rejected. > > > It was already discussed in the past. > Just install a proper package, then gcc-plugin will work. > > https://lore.kernel.org/all/CAHk-=wjjiYjCp61gdAMpDOsUBU-A2hFFKJoVx5VAC7yV4K6WYg@mail.gmail.com/ Thanks for the pointer. As there is already consensus I agree that the patches should not be used. Thomas
diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig index e383cda05367..a664fb5cdde5 100644 --- a/scripts/gcc-plugins/Kconfig +++ b/scripts/gcc-plugins/Kconfig @@ -10,6 +10,7 @@ menuconfig GCC_PLUGINS depends on HAVE_GCC_PLUGINS depends on CC_IS_GCC depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h) + depends on $(host-cc-option,-include gmp.h) default y help GCC plugins are loadable modules that provide extra features to the
The header gmp.h is meant to be picked up from the host system. When it is unavailable the plugin build fails: In file included from ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/gcc-plugin.h:28, from ../scripts/gcc-plugins/gcc-common.h:7, from ../scripts/gcc-plugins/stackleak_plugin.c:30: ../crosstools/gcc-13.2.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/13.2.0/plugin/include/system.h:703:10: fatal error: gmp.h: No such file or directory 703 | #include <gmp.h> | ^~~~~~~ Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> --- scripts/gcc-plugins/Kconfig | 1 + 1 file changed, 1 insertion(+)