path: root/.gitignore
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authorEmese Revfy <>2016-05-24 00:09:38 +0200
committerMichal Marek <>2016-06-07 22:57:10 +0200
commit6b90bd4ba40b38dc13c2782469c1c77e4ed79915 (patch)
tree02d65b38b76e3543d33088ae9149010bae0290b0 /.gitignore
parent24403874316a7180d367e51d7f7e25d5de1f78dd (diff)
GCC plugin infrastructure
This patch allows to build the whole kernel with GCC plugins. It was ported from grsecurity/PaX. The infrastructure supports building out-of-tree modules and building in a separate directory. Cross-compilation is supported too. Currently the x86, arm, arm64 and uml architectures enable plugins. The directory of the gcc plugins is scripts/gcc-plugins. You can use a file or a directory there. The plugins compile with these options: * -fno-rtti: gcc is compiled with this option so the plugins must use it too * -fno-exceptions: this is inherited from gcc too * -fasynchronous-unwind-tables: this is inherited from gcc too * -ggdb: it is useful for debugging a plugin (better backtrace on internal errors) * -Wno-narrowing: to suppress warnings from gcc headers (ipa-utils.h) * -Wno-unused-variable: to suppress warnings from gcc headers (gcc_version variable, plugin-version.h) The infrastructure introduces a new Makefile target called gcc-plugins. It supports all gcc versions from 4.5 to 6.0. The scripts/ script chooses the proper host compiler (gcc-4.7 can be built by either gcc or g++). This script also checks the availability of the included headers in scripts/gcc-plugins/gcc-common.h. The gcc-common.h header contains frequently included headers for GCC plugins and it has a compatibility layer for the supported gcc versions. The gcc-generate-*-pass.h headers automatically generate the registration structures for GIMPLE, SIMPLE_IPA, IPA and RTL passes. Note that 'make clean' keeps the *.so files (only the distclean or mrproper targets clean all) because they are needed for out-of-tree modules. Based on work created by the PaX Team. Signed-off-by: Emese Revfy <> Acked-by: Kees Cook <> Signed-off-by: Michal Marek <>
Diffstat (limited to '.gitignore')
1 files changed, 1 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
index 0c320bf02586..2be25f771bd8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,7 @@ modules.builtin
# Top-level generic files