netdev - [PATCH bpf-next] libbpf: Fix include of bpf_helpers.h when libbpf is installed on system

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Message-Id: <20200114164250.922192-1-toke@redhat.com>
Date:   Tue, 14 Jan 2020 17:42:50 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Andrii Nakryiko <andriin@...com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     Toke Høiland-Jørgensen <toke@...hat.com>,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH bpf-next] libbpf: Fix include of bpf_helpers.h when libbpf is installed on system

The change to use angled includes for bpf_helper_defs.h breaks compilation
against libbpf when it is installed in the include path, since the file is
installed in the bpf/ subdirectory of $INCLUDE_PATH. Fix this by adding the
bpf/ prefix to the #include directive.

Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
---
Not actually sure this fix works for all the cases you originally tried to
fix with the referred commit; please check. Also, could we please stop breaking
libbpf builds? :)

 tools/lib/bpf/bpf_helpers.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h
index 050bb7bf5be6..fa43d649e7a2 100644
--- a/tools/lib/bpf/bpf_helpers.h
+++ b/tools/lib/bpf/bpf_helpers.h
@@ -2,7 +2,7 @@
 #ifndef __BPF_HELPERS__
 #define __BPF_HELPERS__
 
-#include <bpf_helper_defs.h>
+#include <bpf/bpf_helper_defs.h>
 
 #define __uint(name, val) int (*name)[val]
 #define __type(name, val) typeof(val) *name
-- 
2.24.1