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From 0e79852bfd9d8f8efd0091abc7e15b964c79cc0d Mon Sep 17 00:00:00 2001
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From: Jerome Marchand <jmarchan@redhat.com>
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Date: Wed, 23 Mar 2022 09:47:25 +0100
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Subject: [PATCH 3/6] Fix libbtf 0.6.0 build
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Libbtf 0.6.0 introduced a new version of btf_dump__new(). The new
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version is btf_dump__new_v0_6_0() while the old version was renamed
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btf_dump__new_deprecated(). btf_dump__new() is now overloaded,
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unfortunately the macro doesn't work on cpp, at least with LLVM 12.
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Let's call btf_dump__new_deprecated() explicitely when it's defined.
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Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
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---
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src/btf.cpp | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/src/btf.cpp b/src/btf.cpp
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index a5a5e2c0..fccf0a00 100644
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--- a/src/btf.cpp
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+++ b/src/btf.cpp
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@@ -24,6 +24,15 @@
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#pragma GCC diagnostic pop
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#include <bpf/libbpf.h>
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+/*
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+ * Since libbtf 0.6, btf_dump__new() has been overloaded and now can design
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+ * either btf_dump__new_v0_6_0() or btf_dump__new_deprecated(), which is the
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+ * same as btf_dump__new() for libbtf < 0.6, and the one we still use.
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+ */
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+#if LIBBPF_MAJOR_VERSION == 0 && LIBBPF_MINOR_VERSION >= 6
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+#define btf_dump__new(a1, a2, a3, a4) btf_dump__new_deprecated(a1, a2, a3, a4)
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+#endif
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+
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#include "bpftrace.h"
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namespace bpftrace {
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--
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2.35.3
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