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| author |   Ionen Wolkens <ionen@gentoo.org> | 2024-12-11 05:52:55 -0500 |
|---|---|---|
| committer | Ionen Wolkens <ionen@gentoo.org> | 2024-12-11 06:44:35 -0500 |
| commit | d2d4b0b7154f57c9962e01d75b27b8aacbd8764e (patch) | |
| tree | b0fecd57d6177a38a38aaf553f573ba6e4e40cd3 /eclass | |
| parent | qt6-build.eclass: split sanitize_cpu_flags checks in separate blocks (diff) | |
| download | gentoo-d2d4b0b7154f57c9962e01d75b27b8aacbd8764e.tar.gz gentoo-d2d4b0b7154f57c9962e01d75b27b8aacbd8764e.tar.bz2 gentoo-d2d4b0b7154f57c9962e01d75b27b8aacbd8764e.zip | |
qt6-build.eclass: add workaround for cpus with broken rdrand/rdseed
Not perfect but it should prevent failures for the average user.
Formerly meant to check if -march=native is in *FLAGS, but it
shouldn't matter as long as it is not cross.
Can't test myself, but it should work in theory.
Closes: https://bugs.gentoo.org/922498
Signed-off-by: Ionen Wolkens <ionen@gentoo.org>
Diffstat (limited to 'eclass')
| -rw-r--r-- | eclass/qt6-build.eclass | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/eclass/qt6-build.eclass b/eclass/qt6-build.eclass index a0ca9c619405..75630843c087 100644 --- a/eclass/qt6-build.eclass +++ b/eclass/qt6-build.eclass @@ -335,6 +335,18 @@ _qt6-build_sanitize_cpu_flags() { done fi + # some cpus have broken rdrand/rdseed and it's enabled regardless + # with -march=native, Qt detects this and fails (bug #922498) + if [[ ! -v sanitize ]] && + ! tc-is-cross-compiler && + # the kernel also detects this and removes it from cpuinfo + [[ -r /proc/cpuinfo && $(</proc/cpuinfo) != *rdrand* ]] && + tc-cpp-is-true __RDRND__ ${CXXFLAGS} ${CPPFLAGS} + then + einfo "Detected CPU with (likely) broken rdrand/rdseed (bug #922498)" + sanitize=1 + fi + [[ -v sanitize ]] || return 0 # *should* be fine as-is # determine highest(known) usable x86-64 feature level |