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Subject[PATCH 1/2] perf tools: Automate setup of FEATURE_CHECK_(C|LD)FLAGS-all variables
On Tue, Dec 10, 2013 at 01:24:02PM +0100, Jean Pihet wrote:
> Add CFLAGS and LDFLAGS for each feature to be checked during the
> build. This allows to pass particular flags and parameters to the
> feature checks compilation.
>
> 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.
>
> This change set simplifies the flags passing mechanism between the
> Makefiles in config/Makefile and config/feature-checks; this
> could be farther optimized by moving the compilation flags to the
> per-feature check flags for all features to be checked.
>
> Tested on x86_64, ARMv7 and ARMv8 with and without LIBUNWIND_DIR
> set in 'make -C tools/perf'
>
>
> Jean Pihet (2):
> perf: add per-feature check flags
> perf: unwinding: use the per-feature check flags
>
> tools/perf/config/Makefile | 52 ++++++++++++++++++-------------
> tools/perf/config/feature-checks/Makefile | 8 ++---
> 2 files changed, 34 insertions(+), 26 deletions(-)
>

while at it, how about following update

thanks,
jirka


---
Instead of explicitly adding same value into
FEATURE_CHECK_(C|LD)FLAGS-all variables we can
do that automatically.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
---
tools/perf/config/Makefile | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index f75d814..05fd0e2 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -55,9 +55,6 @@ else
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)
@@ -168,6 +165,17 @@ CORE_FEATURE_TESTS = \
stackprotector-all \
timerfd

+# Set FEATURE_CHECK_(C|LD)FLAGS-all for all CORE_FEATURE_TESTS features.
+# If in the future we need per-feature checks/flags for features not
+# mentioned in this list we need to refactor this ;-).
+set_test_all_flags = $(eval $(set_test_all_flags_code))
+define set_test_all_flags_code
+ FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
+ FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
+endef
+
+$(foreach feat,$(CORE_FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
+
#
# So here we detect whether test-all was rebuilt, to be able
# to skip the print-out of the long features list if the file
--
1.8.3.1


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