https://github.com/python/cpython/commit/0cd4befb02df07c0b320cd6246227c13e57b2efb
commit: 0cd4befb02df07c0b320cd6246227c13e57b2efb
branch: main
author: stratakis <cstra...@redhat.com>
committer: vstinner <vstin...@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.
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