tools/bpf: Move linux/types.h for selftests and bpftool

Commit fe4eb069edb7 ("bpftool: Use linux/types.h from source tree for
profiler build") added a build dependency on tools/testing/selftests/bpf
to tools/bpf/bpftool. This is suboptimal with respect to a possible
stand-alone build of bpftool.

Fix this by moving tools/testing/selftests/bpf/include/uapi/linux/types.h
to tools/include/uapi/linux/types.h.

This requires an adjustment in the include search path order for the
tests in tools/testing/selftests/bpf so that tools/include/linux/types.h
is selected when building host binaries and
tools/include/uapi/linux/types.h is selected when building bpf binaries.

Verified by compiling bpftool and the bpf selftests on x86_64 with this
change.

Fixes: fe4eb069edb7 ("bpftool: Use linux/types.h from source tree for profiler build")
Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200313113105.6918-1-tklauser@distanz.ch

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index 9ca3bfb..f584d1f 100644 (file)
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -129,7 +129,6 @@ $(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF)
 skeleton/profiler.bpf.o: skeleton/profiler.bpf.c $(LIBBPF)
        $(QUIET_CLANG)$(CLANG) \
                -I$(srctree)/tools/include/uapi/ \
-               -I$(srctree)/tools/testing/selftests/bpf/include/uapi \
                -I$(LIBBPF_PATH) -I$(srctree)/tools/lib \
                -g -O2 -target bpf -c $< -o $@
 

diff --git a/tools/testing/selftests/bpf/include/uapi/linux/types.h b/tools/include/uapi/linux/types.h
similarity index 100%
rename from tools/testing/selftests/bpf/include/uapi/linux/types.h
rename to tools/include/uapi/linux/types.h

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index da4389d..074a05e 100644 (file)
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -20,8 +20,9 @@ CLANG         ?= clang
 LLC            ?= llc
 LLVM_OBJCOPY   ?= llvm-objcopy
 BPF_GCC                ?= $(shell command -v bpf-gcc;)
-CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) -I$(CURDIR) -I$(APIDIR)   \
+CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) -I$(CURDIR)               \
          -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) -I$(TOOLSINCDIR)     \
+         -I$(APIDIR)                                                   \
          -Dbpf_prog_load=bpf_prog_test_load                            \
          -Dbpf_load_program=bpf_test_load_program
 LDLIBS += -lcap -lelf -lz -lrt -lpthread
@@ -194,8 +195,8 @@ MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
 
 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
 BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)                  \
-            -I$(INCLUDE_DIR) -I$(CURDIR) -I$(CURDIR)/include/uapi      \
-            -I$(APIDIR) -I$(abspath $(OUTPUT)/../usr/include)
+            -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)                   \
+            -I$(abspath $(OUTPUT)/../usr/include)
 
 CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
               -Wno-compare-distinct-pointer-types