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tools build: Correct link flags for libopenssl

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The perf static build reports that the BPF skeleton is disabled due to
the missing libopenssl feature.

Use PKG_CONFIG to determine the link flags for libopenssl.  Add
"--static" to the PKG_CONFIG command for static linking.

Fixes: 7678523109 ("tools/build: Add a feature test for libopenssl")
Signed-off-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Leo Yan 2026-03-17 18:58:00 +00:00 committed by Namhyung Kim
parent 54fcc7f6ec
commit 5c980ab238
1 changed files with 8 additions and 2 deletions
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10
tools/build/feature/Makefile
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@ -103,12 +103,18 @@ else
endif
endif
ifeq ($(findstring -static,${LDFLAGS}),-static)
PKG_CONFIG += --static
endif
all: $(FILES)
__BUILD = $(CC) $(CFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1
BUILD_BFD = $(BUILD) -DPACKAGE='"perf"' -lbfd -ldl
BUILD_ALL = $(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -lslang $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -ldl -lz -llzma -lzstd -lssl
BUILD_ALL = $(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -lslang \
$(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -ldl -lz -llzma -lzstd \
$(shell $(PKG_CONFIG) --libs --cflags openssl 2>/dev/null)
__BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)
BUILDXX = $(__BUILDXX) > $(@:.bin=.make.output) 2>&1
@ -384,7 +390,7 @@ $(OUTPUT)test-libpfm4.bin:
$(BUILD) -lpfm
$(OUTPUT)test-libopenssl.bin:
$(BUILD) -lssl
$(BUILD) $(shell $(PKG_CONFIG) --libs --cflags openssl 2>/dev/null)
$(OUTPUT)test-bpftool-skeletons.bin:
$(SYSTEM_BPFTOOL) version | grep '^features:.*skeletons' \