* [PATCH] perf: Use python-config --includes rather than --cflags
@ 2018-07-10 15:46 Jeremy Cline
0 siblings, 0 replies; only message in thread
From: Jeremy Cline @ 2018-07-10 15:46 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, Ingo Molnar, Peter Zijlstra
Cc: Alexander Shishkin, Jiri Olsa, Namhyung Kim, linux-perf-users,
linux-kernel, Jeremy Cline
Builds started failing in Fedora on Python 3.7 with:
`.gnu.debuglto_.debug_macro' referenced in section
`.gnu.debuglto_.debug_macro' of
util/scripting-engines/trace-event-python.o: defined in discarded
section
In Fedora, Python 3.7 added -flto to the list of --cflags and since it
was only applied to util/scripting-engines/trace-event-python.c and
scripts/python/Perf-Trace-Util/Context.c, linking failed. It's not the
first time the addition of flags has broken builds: commit c6707fdef7e2
("perf tools: Fix up build in hardnened environments") appears to have
fixed a similar problem. "python-config --includes" provides the proper
-I flags and doesn't introduce additional CFLAGS.
Signed-off-by: Jeremy Cline <jcline@redhat.com>
---
tools/perf/Makefile.config | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index b5ac356ba323..f5a3b402589e 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -207,8 +207,7 @@ ifdef PYTHON_CONFIG
PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)
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) --cflags 2>/dev/null)
- PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))
+ PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
endif
--
2.17.1
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