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tools/resolve_btfids: Build libbpf and libsubcmd in separate directories

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[ Upstream commit fc6b48f692 ]

Setting up separate build directories for libbpf and libpsubcmd,
so it's separated from other objects and we don't get them mixed
in the future.

It also simplifies cleaning, which is now simple rm -rf.

Also there's no need for FEATURE-DUMP.libbpf and bpf_helper_defs.h
files in .gitignore anymore.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210205124020.683286-2-jolsa@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiri Olsa
2021-02-05 13:40:17 +01:00
committed by Greg Kroah-Hartman
parent 2934985086
commit 2497190924
2 changed files with 11 additions and 17 deletions
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2
tools/bpf/resolve_btfids/.gitignore vendored
View File

@@ -1,4 +1,2 @@
/FEATURE-DUMP.libbpf
/bpf_helper_defs.h
/fixdep
/resolve_btfids

26
tools/bpf/resolve_btfids/Makefile
View File

@@ -28,22 +28,22 @@ OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
LIBBPF_SRC := $(srctree)/tools/lib/bpf/
SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
BPFOBJ := $(OUTPUT)/libbpf.a
SUBCMDOBJ := $(OUTPUT)/libsubcmd.a
BPFOBJ := $(OUTPUT)/libbpf/libbpf.a
SUBCMDOBJ := $(OUTPUT)/libsubcmd/libsubcmd.a
BINARY := $(OUTPUT)/resolve_btfids
BINARY_IN := $(BINARY)-in.o
all: $(BINARY)
$(OUTPUT):
$(OUTPUT) $(OUTPUT)/libbpf $(OUTPUT)/libsubcmd:
$(call msg,MKDIR,,$@)
$(Q)mkdir -p $(OUTPUT)
$(Q)mkdir -p $(@)
$(SUBCMDOBJ): fixdep FORCE
$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT)
$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf
$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
CFLAGS := -g \
@@ -57,23 +57,19 @@ LIBS = -lelf -lz
export srctree OUTPUT CFLAGS Q
include $(srctree)/tools/build/Makefile.include
$(BINARY_IN): fixdep FORCE
$(BINARY_IN): fixdep FORCE | $(OUTPUT)
$(Q)$(MAKE) $(build)=resolve_btfids
$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
$(call msg,LINK,$@)
$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
libsubcmd-clean:
$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT) clean
libbpf-clean:
$(Q)$(MAKE) -C $(LIBBPF_SRC) OUTPUT=$(OUTPUT) clean
clean: libsubcmd-clean libbpf-clean fixdep-clean
clean: fixdep-clean
$(call msg,CLEAN,$(BINARY))
$(Q)$(RM) -f $(BINARY); \
$(RM) -rf $(if $(OUTPUT),$(OUTPUT),.)/feature; \
$(RM) -rf $(OUTPUT)/libbpf; \
$(RM) -rf $(OUTPUT)/libsubcmd; \
find $(if $(OUTPUT),$(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
tags: