Use the per-feature check flags for the unwinding feature in order to correctly compile the test-all, libunwind and libunwind-debug-frame feature checks.
Tested on x86_64, ARMv7 and ARMv8 with and without LIBUNWIND_DIR set in 'make -C tools/perf'
Signed-off-by: Jean Pihet jean.pihet@linaro.org Cc: Jiri Olsa jolsa@redhat.com --- tools/perf/config/Makefile | 52 ++++++++++++++++++------------- tools/perf/config/feature-checks/Makefile | 8 ++--- 2 files changed, 34 insertions(+), 26 deletions(-)
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 2afb132..5a1f4df 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -36,6 +36,30 @@ ifeq ($(ARCH),arm) LIBUNWIND_LIBS = -lunwind -lunwind-arm endif
+ifeq ($(LIBUNWIND_LIBS),) + NO_LIBUNWIND := 1 +else + # + # For linking with debug library, run like: + # + # make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/ + # + ifdef LIBUNWIND_DIR + LIBUNWIND_CFLAGS = -I$(LIBUNWIND_DIR)/include + LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib + endif + LIBUNWIND_LDFLAGS += $(LIBUNWIND_LIBS) + + # Set per-feature check compilation flags + FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS) + FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) + FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS) + FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) + # and the flags for the test-all case + FEATURE_CHECK_CFLAGS-all += $(LIBUNWIND_CFLAGS) + FEATURE_CHECK_LDFLAGS-all += $(LIBUNWIND_LDFLAGS) +endif + ifeq ($(NO_PERF_REGS),0) CFLAGS += -DHAVE_PERF_REGS_SUPPORT endif @@ -102,7 +126,7 @@ 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))" LIBUNWIND_LIBS="$(LIBUNWIND_LIBS)" -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0) + feature-$(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 >/dev/null 2>/dev/null && echo 1 || echo 0) endef
feature_set = $(eval $(feature_set_code)) @@ -305,21 +329,7 @@ ifndef NO_LIBELF endif # NO_DWARF endif # NO_LIBELF
-ifeq ($(LIBUNWIND_LIBS),) - NO_LIBUNWIND := 1 -endif - ifndef NO_LIBUNWIND - # - # For linking with debug library, run like: - # - # make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/ - # - ifdef LIBUNWIND_DIR - LIBUNWIND_CFLAGS := -I$(LIBUNWIND_DIR)/include - LIBUNWIND_LDFLAGS := -L$(LIBUNWIND_DIR)/lib - endif - ifneq ($(feature-libunwind), 1) msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1); NO_LIBUNWIND := 1 @@ -334,14 +344,12 @@ ifndef NO_LIBUNWIND # non-ARM has no dwarf_find_debug_frame() function: CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME endif - endif -endif
-ifndef NO_LIBUNWIND - CFLAGS += -DHAVE_LIBUNWIND_SUPPORT - EXTLIBS += $(LIBUNWIND_LIBS) - CFLAGS += $(LIBUNWIND_CFLAGS) - LDFLAGS += $(LIBUNWIND_LDFLAGS) + CFLAGS += -DHAVE_LIBUNWIND_SUPPORT + EXTLIBS += $(LIBUNWIND_LIBS) + CFLAGS += $(LIBUNWIND_CFLAGS) + LDFLAGS += $(LIBUNWIND_LDFLAGS) + endif # ifneq ($(feature-libunwind), 1) endif
ifndef NO_LIBAUDIT diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile index b8bb749..bc86462 100644 --- a/tools/perf/config/feature-checks/Makefile +++ b/tools/perf/config/feature-checks/Makefile @@ -32,12 +32,12 @@ CC := $(CC) -MD
all: $(FILES)
-BUILD = $(CC) $(CFLAGS) $(LDFLAGS) -o $(OUTPUT)$@ $@.c +BUILD = $(CC) $(CFLAGS) -o $(OUTPUT)$@ $@.c $(LDFLAGS)
###############################
test-all: - $(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma $(LIBUNWIND_LIBS) -lelf -laudit -I/usr/include/slang -lslang $(shell pkg-config --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl + $(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell pkg-config --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl
test-hello: $(BUILD) @@ -70,10 +70,10 @@ test-libnuma: $(BUILD) -lnuma
test-libunwind: - $(BUILD) $(LIBUNWIND_LIBS) -lelf + $(BUILD) -lelf
test-libunwind-debug-frame: - $(BUILD) $(LIBUNWIND_LIBS) -lelf + $(BUILD) -lelf
test-libaudit: $(BUILD) -laudit