linux-kernel - [PATCH 4/4] selftests/bpf: fix compiling errors

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Date:   Mon, 26 Mar 2018 17:23:28 +0800
From:   changbin.du@...el.com
To:     shuah@...nel.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Changbin Du <changbin.du@...el.com>
Subject: [PATCH 4/4] selftests/bpf: fix compiling errors

From: Changbin Du <changbin.du@...el.com>

This patch fixed below errors of missing head files.

tools/testing/selftests$ make
...
clang -I. -I./include/uapi -I../../../include/uapi -Wno-compare-distinct-pointer-types \
	 -O2 -target bpf -emit-llvm -c test_pkt_access.c -o - |      \
llc -march=bpf -mcpu=generic -filetype=obj -o /home/changbin/work/linux/tools/testing/selftests/bpf//test_pkt_access.o
In file included from test_pkt_access.c:9:
In file included from ../../../include/uapi/linux/bpf.h:11:
In file included from ./include/uapi/linux/types.h:5:
/usr/include/asm-generic/int-ll64.h:11:10: fatal error: 'asm/bitsperlong.h' file not found
 #include <asm/bitsperlong.h>
         ^
1 error generated.
clang -I. -I./include/uapi -I../../../include/uapi -Wno-compare-distinct-pointer-types \
	 -O2 -target bpf -emit-llvm -c test_xdp.c -o - |      \
llc -march=bpf -mcpu=generic -filetype=obj -o /home/changbin/work/linux/tools/testing/selftests/bpf//test_xdp.o
In file included from test_xdp.c:9:
In file included from ../../../include/uapi/linux/bpf.h:11:
In file included from ./include/uapi/linux/types.h:5:
/usr/include/asm-generic/int-ll64.h:11:10: fatal error: 'asm/bitsperlong.h' file not found
 #include <asm/bitsperlong.h>
         ^
1 error generated.
clang -I. -I./include/uapi -I../../../include/uapi -Wno-compare-distinct-pointer-types \
	 -O2 -target bpf -emit-llvm -c test_l4lb.c -o - |      \
llc -march=bpf -mcpu=generic -filetype=obj -o /home/changbin/work/linux/tools/testing/selftests/bpf//test_l4lb.o
In file included from test_l4lb.c:10:
In file included from /usr/include/linux/pkt_cls.h:4:
In file included from ./include/uapi/linux/types.h:5:
/usr/include/asm-generic/int-ll64.h:11:10: fatal error: 'asm/bitsperlong.h' file not found
 #include <asm/bitsperlong.h>
         ^
1 error generated.
clang -I. -I./include/uapi -I../../../include/uapi -Wno-compare-distinct-pointer-types \
	 -O2 -target bpf -emit-llvm -c test_tcp_estats.c -o - |      \
llc -march=bpf -mcpu=generic -filetype=obj -o /home/changbin/work/linux/tools/testing/selftests/bpf//test_tcp_estats.o
In file included from test_tcp_estats.c:35:
In file included from ../../../include/uapi/linux/bpf.h:11:
In file included from ./include/uapi/linux/types.h:5:
/usr/include/asm-generic/int-ll64.h:11:10: fatal error: 'asm/bitsperlong.h' file not found
 #include <asm/bitsperlong.h>
...

Signed-off-by: Changbin Du <changbin.du@...el.com>
---
 tools/testing/selftests/bpf/Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 5c43c18..dc0fdc8 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -10,7 +10,8 @@ ifneq ($(wildcard $(GENHDR)),)
   GENFLAGS := -DHAVE_GENHDR
 endif
 
-CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
+CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) \
+	  -I../../../include -I../../../../usr/include
 LDLIBS += -lcap -lelf -lrt -lpthread
 
 # Order correspond to 'make run_tests' order
@@ -62,7 +63,7 @@ else
   CPU ?= generic
 endif
 
-CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
+CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi -I../../../../usr/include \
 	      -Wno-compare-distinct-pointer-types
 
 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
-- 
2.7.4