diff -Nur upx-1.20.orig/src/Makefile upx-1.20/src/Makefile
--- upx-1.20.orig/src/Makefile	Wed May 23 16:56:13 2001
+++ upx-1.20/src/Makefile	Sat Jul  7 11:07:54 2001
@@ -118,7 +118,7 @@
 ##CFLAGS_O  = -O2 -fstrict-aliasing
 CFLAGS_O  = -O2 -fno-strict-aliasing
 
-CFLAGS    = $(CFLAGS_W) $(CFLAGS_M) $(CFLAGS_O)
+CFLAGS    = -DWITH_UCL $(CFLAGS_W) $(CFLAGS_M) $(CFLAGS_O)
 CXXFLAGS  = $(CFLAGS) -Wsynth -fconserve-space
 CXXFLAGS1 = $(CXXFLAGS)
 ##CXXFLAGS1 += -fasynchronous-exceptions
@@ -135,7 +135,7 @@
 LDFLAGS = -s
 endif
 LDFLAGS += -Wl,-Map,$T.map
-LDLIBS =
+LDLIBS = -lucl
 LIBDIRS =
 DOS_LDLIBS =
 DOS_LIBDIRS =