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authorJiri Olsa <jolsa@kernel.org>2021-02-05 15:40:17 +0300
committerAndrii Nakryiko <andrii@kernel.org>2021-02-09 08:21:39 +0300
commitfc6b48f692f89cc48bfb7fd1aa65454dfe9b2d77 (patch)
tree3af12f21f5ad4e4ab6f3e48793807a2c6eab4426 /tools/bpf/resolve_btfids
parent0a1b0fd929a8bbdf7c47b418b8d0ee6a8de3a7a3 (diff)
downloadlinux-fc6b48f692f89cc48bfb7fd1aa65454dfe9b2d77.tar.xz
tools/resolve_btfids: Build libbpf and libsubcmd in separate directories
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
Diffstat (limited to 'tools/bpf/resolve_btfids')
-rw-r--r--tools/bpf/resolve_btfids/.gitignore2
-rw-r--r--tools/bpf/resolve_btfids/Makefile26
2 files changed, 11 insertions, 17 deletions
diff --git a/tools/bpf/resolve_btfids/.gitignore b/tools/bpf/resolve_btfids/.gitignore
index a026df7dc280..25f308c933cc 100644
--- a/tools/bpf/resolve_btfids/.gitignore
+++ b/tools/bpf/resolve_btfids/.gitignore
@@ -1,4 +1,2 @@
-/FEATURE-DUMP.libbpf
-/bpf_helper_defs.h
/fixdep
/resolve_btfids
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index bf656432ad73..1d46a247ec95 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -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)
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