https://github.com/python/cpython/commit/0cd4befb02df07c0b320cd6246227c13e57... commit: 0cd4befb02df07c0b320cd6246227c13e57b2efb branch: main author: stratakis <cstratak@redhat.com> committer: vstinner <vstinner@python.org> date: 2025-03-31T17:53:49Z summary: gh-131865: Properly apply exported CFLAGS for dtrace/systemtap builds (#131866) When using --with-dtrace the resulting object file could be missing specific CFLAGS exported by the build system due to the systemtap script using specific defaults. Exporting the CC and CFLAGS variables before the dtrace invocation allows us to properly apply CFLAGS exported by the build system even when cross-compiling. The fix does not affect the dtrace invocation on Solaris/macOS. files: A Misc/NEWS.d/next/Build/2025-03-31-19-22-41.gh-issue-131865.PIJy7X.rst M Makefile.pre.in diff --git a/Makefile.pre.in b/Makefile.pre.in index 9658bfa44b98e4..2102f9cfe882bd 100644 --- a/Makefile.pre.in +++ b/Makefile.pre.in @@ -2090,7 +2090,7 @@ Python/frozen.o: $(FROZEN_FILES_OUT) # an include guard, so we can't use a pipeline to transform its output. Include/pydtrace_probes.h: $(srcdir)/Include/pydtrace.d $(MKDIR_P) Include - $(DTRACE) $(DFLAGS) -o $@ -h -s $< + CC="$(CC)" CFLAGS="$(CFLAGS)" $(DTRACE) $(DFLAGS) -o $@ -h -s $< : sed in-place edit with POSIX-only tools sed 's/PYTHON_/PyDTrace_/' $@ > $@.tmp mv $@.tmp $@ @@ -2100,7 +2100,7 @@ Python/gc.o: $(srcdir)/Include/pydtrace.h Python/import.o: $(srcdir)/Include/pydtrace.h Python/pydtrace.o: $(srcdir)/Include/pydtrace.d $(DTRACE_DEPS) - $(DTRACE) $(DFLAGS) -o $@ -G -s $< $(DTRACE_DEPS) + CC="$(CC)" CFLAGS="$(CFLAGS)" $(DTRACE) $(DFLAGS) -o $@ -G -s $< $(DTRACE_DEPS) Objects/typeobject.o: Objects/typeslots.inc diff --git a/Misc/NEWS.d/next/Build/2025-03-31-19-22-41.gh-issue-131865.PIJy7X.rst b/Misc/NEWS.d/next/Build/2025-03-31-19-22-41.gh-issue-131865.PIJy7X.rst new file mode 100644 index 00000000000000..a287e0b22834f3 --- /dev/null +++ b/Misc/NEWS.d/next/Build/2025-03-31-19-22-41.gh-issue-131865.PIJy7X.rst @@ -0,0 +1,2 @@ +The DTrace build now properly passes the ``CC`` and ``CFLAGS`` variables +to the ``dtrace`` command when utilizing SystemTap on Linux.