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tools/resolve_btfids: Build libbpf and libsubcmd in separate directories

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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
This commit is contained in:
Jiri Olsa 2021-02-05 13:40:17 +01:00 committed by Andrii Nakryiko
parent 0a1b0fd929
commit fc6b48f692
2 changed files with 11 additions and 17 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

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: