tools lib bpf: Copy bpf.h and bpf_common.h from the kernel

[cascardo/linux.git] / tools / lib / bpf / Makefile

diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index fc1bc75..62d89d5 100644 (file)
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -68,7 +68,7 @@ FEATURE_USER = .libbpf
 FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf
 FEATURE_DISPLAY = libelf bpf
 
-INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi
+INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
 FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
 
 check_feat := 1
@@ -154,6 +154,12 @@ all: fixdep $(VERSION_FILES) all_cmd
 all_cmd: $(CMD_TARGETS)
 
 $(BPF_IN): force elfdep bpfdep
+       @(test -f ../../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
+       (diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
+       echo "Warning: tools/include/uapi/linux/bpf.h differs from kernel" >&2 )) || true
+       @(test -f ../../../include/uapi/linux/bpf_common.h -a -f ../../../include/uapi/linux/bpf_common.h && ( \
+       (diff -B ../../include/uapi/linux/bpf_common.h ../../../include/uapi/linux/bpf_common.h >/dev/null) || \
+       echo "Warning: tools/include/uapi/linux/bpf_common.h differs from kernel" >&2 )) || true
        $(Q)$(MAKE) $(build)=libbpf
 
 $(OUTPUT)libbpf.so: $(BPF_IN)