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tools/bpftool: Strip BPF .o files before skeleton generation

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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 <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200722043804.2373298-1-andriin@fb.com
This commit is contained in:
Andrii Nakryiko 2020-07-21 21:38:04 -07:00 committed by Alexei Starovoitov
parent a57066b1a0
commit f3c93a93b5
1 changed files with 2 additions and 1 deletions
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3
tools/bpf/bpftool/Makefile
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@ -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 $< > $@