From 443a70541c56d4a7dff0ce693870935e138201b2 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 10 Mar 2015 19:04:31 -0300 Subject: [PATCH] perf tools: Output feature detection's gcc output to a file So that we can debug feature detection problems. It will appear on $(OUTPUT)feature-checks/.make-libbabeltrace.output, using the libbabeltrace feature test. Whole process: [acme@ssdandy linux]$ make -C tools/perf install-bin make: Entering directory `/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j8' parallel build config/Makefile:425: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR config/Makefile:709: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libaudit: [ on ] ... libbfd: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libslang: [ on ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ on ] ... libbabeltrace: [ OFF ] [acme@ssdandy linux]$ find tools/perf -name ".make-*.output" | grep lib | tail -5 tools/perf/config/feature-checks/.make-libdw-dwarf-unwind.output tools/perf/config/feature-checks/.make-libbabeltrace.output tools/perf/config/feature-checks/.make-zlib.output tools/perf/config/feature-checks/.make-liberty.output tools/perf/config/feature-checks/.make-liberty-z.output [acme@ssdandy linux]$ [acme@ssdandy linux]$ cat tools/perf/config/feature-checks/.make-libbabeltrace.output make[1]: Entering directory `/home/acme/git/linux/tools/perf/config/feature-checks' gcc -MD -Wall -Werror -o test-libbabeltrace.bin test-libbabeltrace.c -Wl,-z,noexecstack -lbabeltrace-ctf # -lbabeltrace provided by test-libbabeltrace.c:2:42: fatal error: babeltrace/ctf-writer/writer.h: No such file or directory #include ^ compilation terminated. make[1]: *** [test-libbabeltrace.bin] Error 1 make[1]: Leaving directory `/home/acme/git/linux/tools/perf/config/feature-checks' [acme@ssdandy linux]$ So the libbabeltrace feature will not be builtin, but if we do what is required for it to be built, namely point where we have it installed: [acme@ssdandy linux]$ time make -C tools/perf LIBBABELTRACE_DIR=/opt/libbabeltrace install-bin make: Entering directory `/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j8' parallel build config/Makefile:425: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR Auto-detecting system features: ... dwarf: [ on ] ... glibc: [ on ] ... gtk2: [ on ] ... libaudit: [ on ] ... libbfd: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libslang: [ on ] ... libunwind: [ OFF ] ... libdw-dwarf-unwind: [ on ] ... libbabeltrace: [ on ] ... zlib: [ on ] ... DWARF post unwind library: libdw [acme@ssdandy linux]$ find tools/perf -name ".make-libbabel*.output" | grep lib | tail -5 tools/perf/config/feature-checks/.make-libbabeltrace.output [acme@ssdandy linux]$ cat tools/perf/config/feature-checks/.make-libbabeltrace.output make[1]: Entering directory `/home/acme/git/linux/tools/perf/config/feature-checks' gcc -MD -I/opt/libbabeltrace/include -Wall -Werror -o test-libbabeltrace.bin test-libbabeltrace.c -Wl,-z,noexecstack -L/opt/libbabeltrace/lib -lbabeltrace-ctf # -lbabeltrace provided by make[1]: Leaving directory `/home/acme/git/linux/tools/perf/config/feature-checks' [acme@ssdandy linux]$ Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Jeremie Galarneau Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Sebastian Andrzej Siewior Cc: Tom Zanussi Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-h53xwueqwdeeiqcv9f50nqqb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile.perf | 1 + tools/perf/config/Makefile | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index ec4c063ed9f3..933d70345f87 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -529,6 +529,7 @@ clean: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean config-clean $(Q)$(RM) .config-detected $(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32 $(call QUIET_CLEAN, core-gen) $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)PERF-FEATURES $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex* + $(call QUIET_CLEAN, feature-detect) $(RM) $(OUTPUT)config/feature-checks/.make-*.output $(QUIET_SUBDIR0)Documentation $(QUIET_SUBDIR1) clean $(python-clean) diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index d44c64d64465..bd097187724b 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -184,7 +184,7 @@ endif feature_check = $(eval $(feature_check_code)) define feature_check_code - feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C config/feature-checks test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0) + feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C config/feature-checks test-$1.bin > $(OUTPUT)config/feature-checks/.make-$(1).output 2>&1 && echo 1 || echo 0) endef feature_set = $(eval $(feature_set_code)) -- 2.20.1