$OpenBSD: patch-platform_m4,v 1.1 2017/08/03 14:46:33 jca Exp $

Don't clobber LDFLAGS.

Index: platform.m4
--- platform.m4.orig
+++ platform.m4
@@ -97,7 +97,7 @@ AC_DEFUN(OD_CONFIG_PLUGIN, [
 	    PLUGIN_LD="${CC} -shared"
 	    PLUGIN_LD_FLAGS=""
 	    PLUGIN_SUFFIX=".so"
-	    LDFLAGS="-export-dynamic"
+	    LDFLAGS="-export-dynamic ${LDFLAGS}"
 	    ;;
     esac
 
