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author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2024-04-15 21:24:35 (GMT) |
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committer | GitHub <noreply@github.com> | 2024-04-15 21:24:35 (GMT) |
commit | 556fb3675c87ed1132caa5ccec94fc3f8778b1d7 (patch) | |
tree | 52e59ea803bae354880241eb94224ba3224988d9 /Doc/using | |
parent | eb0bfb5910e5135505d2259efa90e0095c422efe (diff) | |
download | cpython-556fb3675c87ed1132caa5ccec94fc3f8778b1d7.zip cpython-556fb3675c87ed1132caa5ccec94fc3f8778b1d7.tar.gz cpython-556fb3675c87ed1132caa5ccec94fc3f8778b1d7.tar.bz2 |
[3.12] gh-117804: Document how to suppress PGO unprofiled source warnings (GH-117859) (#117912)
(cherry picked from commit 757891ee8ad61a864444c1fdb764d81bc8a11189)
Co-authored-by: Erlend E. Aasland <erlend@python.org>
Diffstat (limited to 'Doc/using')
-rw-r--r-- | Doc/using/configure.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst index 45263a3..0e605b3 100644 --- a/Doc/using/configure.rst +++ b/Doc/using/configure.rst @@ -302,6 +302,15 @@ also be used to improve performance. GCC is used: add ``-fno-semantic-interposition`` to the compiler and linker flags. + .. note:: + + During the build, you may encounter compiler warnings about + profile data not being available for some source files. + These warnings are harmless, as only a subset of the code is exercised + during profile data acquisition. + To disable these warnings on Clang, manually suppress them by adding + ``-Wno-profile-instr-unprofiled`` to :envvar:`CFLAGS`. + .. versionadded:: 3.6 .. versionchanged:: 3.10 |