netdev - [PATCH net-next] selftests/bpf: get rid of -D__x86_64_

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Message-ID: <20170503041443.3125777-1-ast@fb.com>
Date:   Tue, 2 May 2017 21:14:43 -0700
From:   Alexei Starovoitov <ast@...com>
To:     "David S . Miller" <davem@...emloft.net>
CC:     Daniel Borkmann <daniel@...earbox.net>, <netdev@...r.kernel.org>
Subject: [PATCH net-next] selftests/bpf: get rid of -D__x86_64__

-D__x86_64__ workaround was used to make /usr/include/features.h
to follow expected path through the system include headers.
This is not portable.
Instead define dummy stubs.h which is used by 'clang -target bpf'

Fixes: 6882804c916b ("selftests/bpf: add a test for overlapping packet range checks")
Signed-off-by: Alexei Starovoitov <ast@...nel.org>
---
 tools/testing/selftests/bpf/Makefile    | 4 ++--
 tools/testing/selftests/bpf/gnu/stubs.h | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/gnu/stubs.h

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index f4341e160de6..91edd0566237 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -34,6 +34,6 @@ $(BPFOBJ): force
 CLANG ?= clang
 
 %.o: %.c
-	$(CLANG) -I../../../include/uapi -I../../../../samples/bpf/ \
-		-D__x86_64__ -Wno-compare-distinct-pointer-types \
+	$(CLANG) -I. -I../../../include/uapi -I../../../../samples/bpf/ \
+		-Wno-compare-distinct-pointer-types \
 		-O2 -target bpf -c $< -o $@
diff --git a/tools/testing/selftests/bpf/gnu/stubs.h b/tools/testing/selftests/bpf/gnu/stubs.h
new file mode 100644
index 000000000000..719225b16626
--- /dev/null
+++ b/tools/testing/selftests/bpf/gnu/stubs.h
@@ -0,0 +1 @@
+/* dummy .h to trick /usr/include/features.h to work with 'clang -target bpf' */
-- 
2.9.3