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tools/resolve_btfids: Use pkg-config to locate libelf

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When libelf was not installed in the standard location, it cannot be
located by the current building config.

Use pkg-config to help locate libelf in such cases.

Signed-off-by: Shen Jiamin <shen_jiamin@comp.nus.edu.sg>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20221215044703.400139-1-shen_jiamin@comp.nus.edu.sg
This commit is contained in:
Shen Jiamin 2022-12-15 12:47:03 +08:00 committed by Daniel Borkmann
parent 4fb877aaa1
commit 0e43662e61
1 changed files with 6 additions and 2 deletions
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8
tools/bpf/resolve_btfids/Makefile
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@ -56,13 +56,17 @@ $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OU
DESTDIR=$(LIBBPF_DESTDIR) prefix= EXTRA_CFLAGS="$(CFLAGS)" \
$(abspath $@) install_headers
LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
CFLAGS += -g \
-I$(srctree)/tools/include \
-I$(srctree)/tools/include/uapi \
-I$(LIBBPF_INCLUDE) \
-I$(SUBCMD_SRC)
-I$(SUBCMD_SRC) \
$(LIBELF_FLAGS)
LIBS = -lelf -lz
LIBS = $(LIBELF_LIBS) -lz
export srctree OUTPUT CFLAGS Q
include $(srctree)/tools/build/Makefile.include