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I took the same approach as the recent perl upgrade: write recipe from scratch,
taking the pieces from the old recipe only when they were proven to be necessary.
The pgo, manifest and ptest features are all preserved.
New features:
- native and target recipes are now unified into one recipe
- check_build_completeness.py runs right after do_compile() and verifies that
all optional modules have been built (a notorious source of regressions)
- a new approach to sysconfig.py and distutils/sysconfig.py returning values
appropriate for native or target builds: we copy the configuration file to a
separate folder, add that folder to sys.path (through environment variable
that differs between native and target builds), and point python to the file
through another environment variable.
There were a few other patches where it was difficult to decide if the patch
is still relevant, and how to test that it works correctly; please add those
as-needed by testing the new python.
Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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There's no need to delete the line that removes the profile data, as we're not
using it after the build. This reduces the size of the patch, making it easier
to maintain.
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Enable profile guided optimization (pgo) for python3. Enabling pgo in
python is generally as simple as invoking the target profile-opt which:
- builds python binaries with profile instrumentation enabled,
- runs a specific profile task using that python to get the profile
data and,
- feeds the compiler with this profile data and rebuilds python.
This change invokes qemu-user for the second step of running a profile
task using target python. Depending on how long profile task takes to
run, this might add a significant time to compilation (which would be
true for native builds too). The default profile task can be changed by
the users depending on what makes sense for their use case (or can be
left empty). In case qemu-user isn't supported, profile task won't be run.
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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