1 files changed, 1 insertions, 0 deletions

diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 445bd74..84116a2 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -98,6 +98,7 @@ char buf[1]; getentropy(buf, 1);
                 HOST_OS=openbsd
                 HOST_ABI=elf
                 AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD gcc has bounded])
+                AC_DEFINE([HAVE_ATTRIBUTE__DEAD], [1], [OpenBSD gcc has __dead])
                 ;;
         *mingw*)
                 HOST_OS=win