James Clark
23716d7614
[ Upstream commit630af16eee] This fixes the issue where the build will fail if only the Python2 runtime is installed but the Python3 devtools are installed. Currently the workaround is 'make PYTHON=python3'. Fix it by autodetecting Python based on whether python[x]-config exists rather than just python[x] because both are needed for the build. Then -config is stripped to find the Python runtime. Testing ======= * Auto detect links with Python3 when the v3 devtools are installed and only Python 2 runtime is installed * Auto detect links with Python2 when both devtools are installed * Sensible warning is printed if no Python devtools are installed * 'make PYTHON=x' still automatically sets PYTHON_CONFIG=x-config * 'make PYTHON=x' fails if x-config doesn't exist * 'make PYTHON=python3' overrides Python2 devtools * 'make PYTHON=python2' overrides Python3 devtools * 'make PYTHON_CONFIG=x-config' works * 'make PYTHON=x PYTHON_CONFIG=x' works * 'make PYTHON=missing' reports an error * 'make PYTHON_CONFIG=missing' reports an error Fixes:79373082fa("perf python: Autodetect python3 binary") Signed-off-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220309194313.3350126-2-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.