Commit cffe29d3 authored by Leo Yan's avatar Leo Yan Committed by Namhyung Kim
Browse files

perf: build: Set Python configuration for cross compilation 



Python configuration has dedicated folders for different architectures.
For example, Python 3.11 has two folders as shown below, one for Arm64
and another for x86_64:

  /usr/lib/python3.11/config-3.11-aarch64-linux-gnu/
  /usr/lib/python3.11/config-3.11-x86_64-linux-gnu/

This commit updates the Python configuration path based on the
compiler's machine type, guiding the compiler to find the correct path
for Python libraries. It also renames the generated .so file name to
match the machine name.

Signed-off-by: default avatarLeo Yan <leo.yan@arm.com>
Tested-by: default avatarIan Rogers <irogers@google.com>
Cc: amadio@gentoo.org
Cc: James Clark <james.clark@linaro.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20240717082211.524826-3-leo.yan@arm.com


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 440cf776

tools/perf/Makefile.config

+8 −0
Original line number Diff line number Diff line
@@ -296,6 +296,11 @@ endif 


ifdef PYTHON_CONFIG

  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)

  # Update the python flags for cross compilation

  ifdef CROSS_COMPILE

    PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')

    PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))

  endif

  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))

  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil

  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
@@ -897,6 +902,9 @@ else 
         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")

         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)

           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')

           ifdef CROSS_COMPILE

             PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))

           endif

           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)

	 else

           $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)