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The latest GCC 13 snapshot (13.0.1 20230129) gives the following: ``` cc1: error: cannot load plugin ./scripts/gcc-plugins/randomize_layout_plugin.so :./scripts/gcc-plugins/randomize_layout_plugin.so: undefined symbol: tree_code_type ``` This ends up being because of https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=b0241ce6e37031 upstream in GCC which changes the visibility of some types used by the kernel's plugin infrastructure like tree_code_type. After discussion with the GCC folks, we found that the kernel needs to be building plugins with the same flags used to build GCC - and GCC defaults to gnu++17 right now. The minimum GCC version needed to build the kernel is GCC 5.1 and GCC 5.1 already defaults to gnu++14 anyway, so just drop the flag, as all GCCs that could be used to build GCC already default to an acceptable version which was >= the version we forced via flags until now. Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108634 Signed-off-by: Sam James <sam@gentoo.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230201230009.2252783-1-sam@gentoo.org |
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| .. | ||
| .gitignore | ||
| arm_ssp_per_task_plugin.c | ||
| gcc-common.h | ||
| gcc-generate-gimple-pass.h | ||
| gcc-generate-ipa-pass.h | ||
| gcc-generate-rtl-pass.h | ||
| gcc-generate-simple_ipa-pass.h | ||
| Kconfig | ||
| latent_entropy_plugin.c | ||
| Makefile | ||
| randomize_layout_plugin.c | ||
| sancov_plugin.c | ||
| stackleak_plugin.c | ||
| structleak_plugin.c | ||