[PATCH bpf-next] tools/bpftool: strip BPF .o files before skeleton generation

[Andrii Nakryiko]

Strip away DWARF info from .bpf.o files, before generating BPF skeletons.
This reduces bpftool binary size from 3.43MB to 2.58MB.

Signed-off-by: Andrii Nakryiko <andr...@fb.com>
---
 tools/bpf/bpftool/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index 51bd520ed437..8462690a039b 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -59,6 +59,7 @@ endif
 INSTALL ?= install
 RM ?= rm -f
 CLANG ?= clang
+LLVM_STRIP ?= llvm-strip
 
 FEATURE_USER = .bpftool
 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
@@ -147,7 +148,7 @@ $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h 
$(LIBBPF)
                -I$(srctree)/tools/include/uapi/ \
                -I$(LIBBPF_PATH) \
                -I$(srctree)/tools/lib \
-               -g -O2 -target bpf -c $< -o $@
+               -g -O2 -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
 
 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
        $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
-- 
2.24.1