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commit: cb41e7e05c55f6ef64e7a617869bbb644899e724 |
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Author: Sam James <sam <AT> gentoo <DOT> org> |
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AuthorDate: Mon May 2 23:17:29 2022 +0000 |
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Commit: Sam James <sam <AT> gentoo <DOT> org> |
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CommitDate: Mon May 2 23:18:51 2022 +0000 |
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URL: https://gitweb.gentoo.org/proj/crossdev.git/commit/?id=cb41e7e0 |
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|
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crossdev: force off USE=hardened where no SSP |
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|
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This fixes e.g. hppa2.0-unknown-linux-gnu where the stack |
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grows up and hence we lack SSP, but also -fstack-clash-protection |
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which is forced on by USE=hardened. |
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|
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glibc failed to build before this with: |
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``` |
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checking for broken __attribute__((alias()))... yes |
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configure: error: working alias attribute support required |
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* ERROR: cross-hppa2.0-unknown-linux-gnu/glibc-2.35-r4::crossdev failed (configure phase): |
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``` |
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|
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config.log: |
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``` |
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configure:4199: checking if compiler warns about alias for function with incompatible types |
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cc1: error: '-fstack-clash-protection' is not supported on targets where the stack grows from lower to higher addresses [-Werror] |
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conftest.c:9:34: error: 'foo_alias' alias between functions of incompatible types 'int(const void *, int)' and 'int (*(void))(const void *, int)' [-Werror=attribute-alias=] |
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9 | extern __typeof (__redirect_foo) foo_alias __attribute__ ((alias ("foo"))); |
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| ^~~~~~~~~ |
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conftest.c:4:28: note: aliased declaration here |
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4 | __typeof (__redirect_foo) *foo_impl (void) |
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| ^~~~~~~~ |
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cc1: all warnings being treated as errors |
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``` |
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|
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Signed-off-by: Sam James <sam <AT> gentoo.org> |
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|
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crossdev | 3 ++- |
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1 file changed, 2 insertions(+), 1 deletion(-) |
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|
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diff --git a/crossdev b/crossdev |
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index 7ec9a9d..a7566ba 100755 |
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--- a/crossdev |
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+++ b/crossdev |
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@@ -437,7 +437,8 @@ parse_target() { |
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# Running a hardened profile on the host forces ssp #831165 |
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if [[ $ssp_support = "no" ]]; then |
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# ssp is >=gcc-6, nossp is <gcc-6 |
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- GMASK+=" ssp -nossp" |
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+ # blacklist hardened too because it'll force -fstack-clash-protection |
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+ GMASK+=" ssp hardened -nossp" |
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GFORCE+=" nossp" |
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fi |
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} |
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