blob: 831de6487a844870d09e7ab72a78e8bc8861dce5 (
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diff --git a/src/btf.h b/src/btf.h
index 61579a3..4e9f9fc 100644
--- a/src/btf.h
+++ b/src/btf.h
@@ -2,6 +2,7 @@
#include "types.h"
#include <linux/types.h>
+#include <linux/version.h>
#include <map>
#include <regex>
#include <string>
@@ -11,6 +12,15 @@
struct btf;
struct btf_type;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,5,0)
+/* this is required to build with 5.4 and earlier kernel headers */
+enum btf_func_linkage {
+ BTF_FUNC_STATIC = 0,
+ BTF_FUNC_GLOBAL = 1,
+ BTF_FUNC_EXTERN = 2,
+};
+#endif
+
namespace bpftrace {
class BTF
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