$NetBSD: patch-plug-ins_unsharp_Makefile.am,v 1.1 2018/12/31 13:11:12 ryoon Exp $

--- plug-ins/unsharp/Makefile.am.orig	2004-02-10 00:47:34.000000000 +0000
+++ plug-ins/unsharp/Makefile.am
@@ -15,7 +15,7 @@ INCLUDES = \
 LDADD = \
 	$(top_builddir)/lib/libcinepaint.la	\
 	$(X_LIBS)				\
-	-lc
+	-lm
 
 DEPS = $(top_builddir)/lib/libcinepaint.la