Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.
diff --git a/configure.in b/configure.in
index c439d5a..5a411fe 100644
--- a/configure.in
+++ b/configure.in
@@ -755,7 +755,7 @@
 	      PY3LIBRARY=libpython3.so
 	  fi
           ;;
-    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*)
+    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*)
 	  LDLIBRARY='libpython$(LDVERSION).so'
 	  BLDLIBRARY='-L. -lpython$(LDVERSION)'
 	  RUNSHARED=LD_LIBRARY_PATH=`pwd`:${LD_LIBRARY_PATH}