Use correct name for OpenGL library on OpenBSD by default.

config.d/paths.m4

@@ -106,6 +106,8 @@ AC_ARG_WITH(gl-driver,
 if test "x$gl_driver" = xauto -o "x$gl_driver" = xyes; then
 	if test "$SYSTYPE" = WIN32; then
 		gl_driver="OPENGL32.DLL"
+	elif test "$SYSTYPE" = OPENBSD; then
+		gl_driver="libGL.so"
 	else
 		gl_driver="libGL.so.1"
 	fi

configure.ac

@@ -93,6 +93,11 @@ case "${host}" in
 		AC_MSG_RESULT([Win32 driver])
 		WIN32_LIBS=' $(NET_LIBS)'
 		;;
+	*-openbsd*)
+		SYSTYPE=OPENBSD
+		AC_MSG_RESULT([OpenBSD driver])
+		WIN32_LIBS=''
+		;;
 	*)
 		SYSTYPE=POSIX
 		AC_MSG_RESULT([default POSIX driver])