Add macros to build on OpenBSD

From upstream Mesa commit a042465c218e ("util/build-id: define ElfW and
NT_GNU_BUILD_ID if needed")

1 files changed, 8 insertions, 0 deletions

diff --git a/build-id.c b/build-id.c
index bd6faae..e686335 100644
--- a/build-id.c
+++ b/build-id.c
@@ -30,6 +30,14 @@
 
 #include "build-id.h"
 
+#ifndef NT_GNU_BUILD_ID
+#define NT_GNU_BUILD_ID 3
+#endif
+
+#ifndef ElfW
+#define ElfW(type) Elf_##type
+#endif
+
 #define ALIGN(val, align)       (((val) + (align) - 1) & ~((align) - 1))
 
 struct build_id_note {