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Build Python with -O3

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https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3

Resolves: RHEL-49636
This commit is contained in:
Miro Hrončok 2024-05-06 11:41:41 +02:00 committed by Charalampos Stratakis
parent 5bb2964546
commit 689e205f07
1 changed files with 18 additions and 5 deletions
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23
python3.11.spec
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@ -20,7 +20,7 @@ URL: https://www.python.org/
#global prerel ... #global prerel ...
%global upstream_version %{general_version}%{?prerel} %global upstream_version %{general_version}%{?prerel}
Version: %{general_version}%{?prerel:~%{prerel}} Version: %{general_version}%{?prerel:~%{prerel}}
Release: 3%{?dist} Release: 4%{?dist}
License: Python License: Python
@ -145,6 +145,15 @@ License: Python
%global py_INSTSONAME_optimized libpython%{LDVERSION_optimized}.so.%{py_SOVERSION} %global py_INSTSONAME_optimized libpython%{LDVERSION_optimized}.so.%{py_SOVERSION}
%global py_INSTSONAME_debug libpython%{LDVERSION_debug}.so.%{py_SOVERSION} %global py_INSTSONAME_debug libpython%{LDVERSION_debug}.so.%{py_SOVERSION}
# The -O flag for the compiler, optimized builds
# https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3
%global optflags_optimized -O3
# The -O flag for the compiler, debug builds
# -Wno-cpp avoids some warnings with -O0
%global optflags_debug -O0 -Wno-cpp
# Remove the default -O2 flag, our flags are applied in %%build/%%install
%global __global_compiler_flags %(echo '%{__global_compiler_flags}' | sed 's/-O[[:digit:]]//')
# Disable automatic bytecompilation. The python3 binary is not yet be # Disable automatic bytecompilation. The python3 binary is not yet be
# available in /usr/bin when Python is built. Also, the bytecompilation fails # available in /usr/bin when Python is built. Also, the bytecompilation fails
# on files that test invalid syntax. # on files that test invalid syntax.
@ -872,12 +881,12 @@ BuildPython() {
# See also: https://bugzilla.redhat.com/show_bug.cgi?id=1818857 # See also: https://bugzilla.redhat.com/show_bug.cgi?id=1818857
BuildPython debug \ BuildPython debug \
"--without-ensurepip --with-pydebug" \ "--without-ensurepip --with-pydebug" \
"-O0 -Wno-cpp" "%{optflags_debug}"
%endif # with debug_build %endif # with debug_build
BuildPython optimized \ BuildPython optimized \
"--without-ensurepip %{optimizations_flag}" \ "--without-ensurepip %{optimizations_flag}" \
"" "%{optflags_optimized}"
# ====================================================== # ======================================================
# Installing the built code: # Installing the built code:
@ -976,14 +985,14 @@ EOF
%if %{with debug_build} %if %{with debug_build}
InstallPython debug \ InstallPython debug \
%{py_INSTSONAME_debug} \ %{py_INSTSONAME_debug} \
-O0 \ "%{optflags_debug}" \
%{LDVERSION_debug} %{LDVERSION_debug}
%endif # with debug_build %endif # with debug_build
# Now the optimized build: # Now the optimized build:
InstallPython optimized \ InstallPython optimized \
%{py_INSTSONAME_optimized} \ %{py_INSTSONAME_optimized} \
"" \ "%{optflags_optimized}" \
%{LDVERSION_optimized} %{LDVERSION_optimized}
# Install directories for additional packages # Install directories for additional packages
@ -1851,6 +1860,10 @@ fi
# ====================================================== # ======================================================
%changelog %changelog
* Thu Jul 18 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-4
- Build Python with -O3
- https://fedoraproject.org/wiki/Changes/Python_built_with_gcc_O3
* Thu Jul 18 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-3 * Thu Jul 18 2024 Charalampos Stratakis <cstratak@redhat.com> - 3.11.9-3
- Security fix for CVE-2024-4032 - Security fix for CVE-2024-4032
Resolves: RHEL-44067 Resolves: RHEL-44067