Build Python with -O3
https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3 Resolves: RHEL-49635
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@ -20,7 +20,7 @@ URL: https://www.python.org/
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#global prerel ...
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%global upstream_version %{general_version}%{?prerel}
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Version: %{general_version}%{?prerel:~%{prerel}}
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Release: 3%{?dist}
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Release: 4%{?dist}
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License: Python
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@ -145,6 +145,15 @@ License: Python
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%global py_INSTSONAME_optimized libpython%{LDVERSION_optimized}.so.%{py_SOVERSION}
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%global py_INSTSONAME_debug libpython%{LDVERSION_debug}.so.%{py_SOVERSION}
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# The -O flag for the compiler, optimized builds
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# https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3
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%global optflags_optimized -O3
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# The -O flag for the compiler, debug builds
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# -Wno-cpp avoids some warnings with -O0
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%global optflags_debug -O0 -Wno-cpp
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# Remove the default -O2 flag, our flags are applied in %%build/%%install
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%global __global_compiler_flags %(echo '%{__global_compiler_flags}' | sed 's/-O[[:digit:]]//')
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# Disable automatic bytecompilation. The python3 binary is not yet be
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# available in /usr/bin when Python is built. Also, the bytecompilation fails
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# on files that test invalid syntax.
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@ -800,12 +809,12 @@ BuildPython() {
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# See also: https://bugzilla.redhat.com/show_bug.cgi?id=1818857
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BuildPython debug \
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"--without-ensurepip --with-pydebug" \
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"-O0 -Wno-cpp"
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"%{optflags_debug}"
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%endif # with debug_build
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BuildPython optimized \
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"--without-ensurepip %{optimizations_flag}" \
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""
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"%{optflags_optimized}"
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# ======================================================
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# Installing the built code:
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@ -904,14 +913,14 @@ EOF
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%if %{with debug_build}
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InstallPython debug \
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%{py_INSTSONAME_debug} \
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-O0 \
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"%{optflags_debug}" \
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%{LDVERSION_debug}
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%endif # with debug_build
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# Now the optimized build:
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InstallPython optimized \
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%{py_INSTSONAME_optimized} \
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"" \
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"%{optflags_optimized}" \
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%{LDVERSION_optimized}
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# Install directories for additional packages
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@ -1643,6 +1652,10 @@ CheckPython optimized
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# ======================================================
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%changelog
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* Thu Jul 18 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-4
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- Build Python with -O3
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- https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3
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* Thu Jul 18 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-3
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- Security fix for CVE-2024-4032
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Resolves: RHEL-44099
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@ -34,6 +34,9 @@
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- debugtest:
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dir: python/selftest
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run: "VERSION={{ pybasever }} PYTHON=python{{ pybasever }}d X='-i test_check_probes' ./parallel.sh"
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- optimizedflags:
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dir: python/flags
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run: "python{{ pybasever }} ./assertflags.py -O3"
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- debugflags:
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dir: python/flags
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run: "python{{ pybasever }}d ./assertflags.py -O0"
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