diff -urN /usr/ports/emulators/cpmemu/Makefile emulators/cpmemu/Makefile
--- /usr/ports/emulators/cpmemu/Makefile	2013-11-06 22:06:16.000000000 +0900
+++ emulators/cpmemu/Makefile	2013-12-31 00:00:00.000000000 +0900
@@ -18,5 +18,13 @@
 
 ONLY_FOR_ARCHS=	i386
 
-NO_STAGE=	yes
-.include <bsd.port.mk>
+USES=		compiler
+
+.include <bsd.port.pre.mk>
+
+.if ${COMPILER_TYPE} == "clang"
+USE_BINUTILS=	yes
+CPPFLAGS+=	-no-integrated-as
+.endif
+
+.include <bsd.port.post.mk>
diff -urN /usr/ports/emulators/cpmemu/files/patch-ab emulators/cpmemu/files/patch-ab
--- /usr/ports/emulators/cpmemu/files/patch-ab	2013-11-06 22:06:16.000000000 +0900
+++ emulators/cpmemu/files/patch-ab	2013-12-31 00:00:00.000000000 +0900
@@ -21,14 +21,14 @@
 +CC ?= gcc
  
 -CFLAGS = -O2 -pipe -ansi -Wall \
-+CFLAGS += -ansi -Wall \
++CFLAGS += $(CPPFLAGS) -ansi -Wall \
  	-Wshadow -Wpointer-arith -Wcast-qual -Wcast-align \
  	-Waggregate-return -Wstrict-prototypes -Wmissing-prototypes \
  	-Wnested-externs -Wwrite-strings \
  	-DCPMLIBDIR=\"$(CPMLIBDIR)\"
  
 -LDFLAGS = -s
-+LDFLAGS += -s
++#LDFLAGS = -s
  
  OBJS = single.o z80emu.o em.o io.o bios.o \
  	commands.o running.o main.o disneu.o disz80.o low.o
@@ -44,9 +44,10 @@
  
  install: all
 -	install -m 511 cpm $(BINDIR)
-+	${BSD_INSTALL_PROGRAM} cpm $(BINDIR)/cpmemu
-+	${BSD_INSTALL_PROGRAM} format $(BINDIR)/cpmformat
- 	-mkdir $(CPMLIBDIR)
+-	-mkdir $(CPMLIBDIR)
 -	chmod 755 $(CPMLIBDIR)
 -	install -m 444 z80-binaries/* $(CPMLIBDIR)
-+	${BSD_INSTALL_DATA} z80-binaries/* $(CPMLIBDIR)
++	${BSD_INSTALL_PROGRAM} cpm $(DESTDIR)$(BINDIR)/cpmemu
++	${BSD_INSTALL_PROGRAM} format $(DESTDIR)$(BINDIR)/cpmformat
++	-mkdir $(DESTDIR)$(CPMLIBDIR)
++	${BSD_INSTALL_DATA} z80-binaries/* $(DESTDIR)$(CPMLIBDIR)