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bpftool: Allow add linker flags via EXTRA_LDFLAGS variable 

Adding EXTRA_LDFLAGS allowing user to specify extra flags
for LD_FLAGS variable. Also adding LDFLAGS to build command
line.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jiri Olsa 2018-10-08 10:22:59 +02:00 committed by Daniel Borkmann
parent 0ef6bf39f0
commit c85061657e
1 changed files with 4 additions and 1 deletions
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5
tools/bpf/bpftool/Makefile
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@ -49,6 +49,9 @@ CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
ifneq ($(EXTRA_CFLAGS),) ifneq ($(EXTRA_CFLAGS),)
CFLAGS += $(EXTRA_CFLAGS) CFLAGS += $(EXTRA_CFLAGS)
endif endif
ifneq ($(EXTRA_LDFLAGS),)
LDFLAGS += $(EXTRA_LDFLAGS)
endif
LIBS = -lelf -lbfd -lopcodes $(LIBBPF) LIBS = -lelf -lbfd -lopcodes $(LIBBPF)
@ -94,7 +97,7 @@ $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
$(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
$(OUTPUT)bpftool: $(OBJS) $(LIBBPF) $(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ $(LIBS) $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
$(OUTPUT)%.o: %.c $(OUTPUT)%.o: %.c
$(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<