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build: deprecate --enable-gprof builds and remove from CI

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As gprof relies on instrumentation you rarely get useful data compared
to a real optimised build. Lets deprecate the build option and
simplify the CI configuration as a result.

Buglink: https://gitlab.com/qemu-project/qemu/-/issues/1338
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230131094224.861621-1-alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Alex Bennée 2023-01-31 09:42:23 +00:00 • committed by Thomas Huth
parent 550c6d97de
commit bb9ecae70b
4 changed files with 26 additions and 17 deletions
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14
docs/about/deprecated.rst
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@ -20,6 +20,20 @@ they were first deprecated in the 2.10.0 release.
What follows is a list of all features currently marked as
deprecated.
Build options
-------------
``gprof`` builds (since 8.0)
''''''''''''''''''''''''''''
The ``--enable-gprof`` configure setting relies on compiler
instrumentation to gather its data which can distort the generated
profile. As other non-instrumenting tools are available that give a
more holistic view of the system with non-instrumented binaries we are
deprecating the build option and no longer defend it in CI. The
``--enable-gcov`` build option remains for analysis test case
coverage.
System emulator command line arguments
--------------------------------------