This is a note to let you know that I've just added the patch titled
tools/resolve_btfids: Build libbpf and libsubcmd in separate directories
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tools-resolve_btfids-build-libbpf-and-libsubcmd-in-s.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8f56992750a8cf85939208f8af99f3ffe3873bb1
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
Date: Fri Feb 5 13:40:17 2021 +0100
tools/resolve_btfids: Build libbpf and libsubcmd in separate directories
[ Upstream commit fc6b48f692f89cc48bfb7fd1aa65454dfe9b2d77 ]
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@xxxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Acked-by: Song Liu <songliubraving@xxxxxx>
Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Link: https://lore.kernel.org/bpf/20210205124020.683286-2-jolsa@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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)
tags:
