diff --git a/cad/pcb/Makefile b/cad/pcb/Makefile
index dbd157bad0c4..b040cb13ce69 100644
--- a/cad/pcb/Makefile
+++ b/cad/pcb/Makefile
@@ -1,72 +1,69 @@
 # Created by: Michael Reifenberger <mr@FreeBSD.org>
 
 PORTNAME=	pcb
 PORTVERSION=	4.2.0
 PORTREVISION=	2
 PORTEPOCH=	1
 CATEGORIES=	cad
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${PORTNAME}-${PORTVERSION}
 
 MAINTAINER=	hrs@FreeBSD.org
 COMMENT=	X11 interactive printed circuit board layout system
 
 LICENSE=	GPLv2
 
 BUILD_DEPENDS=	m4>=1.4.11:devel/m4 \
 		${LOCALBASE}/libdata/pkgconfig/dbus-1.pc:devel/dbus
 LIB_DEPENDS=	libgd.so:graphics/gd \
 		libgtkglext-x11-1.0.so:x11-toolkits/gtkglext \
 		libfontconfig.so:x11-fonts/fontconfig \
 		libfreetype.so:print/freetype2
 RUN_DEPENDS=	m4>=1.4.11:devel/m4 \
 		${LOCALBASE}/libdata/pkgconfig/dbus-1.pc:devel/dbus
 
 USES=		gl gmake gnome pkgconfig tk:run shared-mime-info \
 		desktop-file-utils xorg
 USE_GL=		gl glu
 USE_GNOME=	intltool cairo pangox-compat
 USE_XORG=	x11 xrender xinerama
 
 CONFLICTS=	gts-[0-9]*
 GNU_CONFIGURE=	yes
 CONFIGURE_ENV+=	INSTALL_DATA="${BSD_INSTALL_DATA}"
 LDFLAGS+=	-lpthread
 
 PORTDOCS=	\
 	pcb.html pcb.pdf refcard.pdf pad.png puller.png thermal.png	\
 	examples tutorial gcode.png gcode_control_img.png		\
 	gcode_tool_path.png
 
 OPTIONS_DEFINE=	DOCS NLS
 OPTIONS_SINGLE=	GUI
 OPTIONS_SINGLE_GUI=MOTIF GTK NONE
 OPTIONS_DEFAULT=GTK
 DOCS_CONFIGURE_ENABLE=	doc
 DOCS_CONFIGURE_ON=	--docdir=${DOCSDIR}
 NLS_CONFIGURE_ENABLE=	nls
 NLS_CONFIGURE_ON=	--with-libintl-prefix=${LOCALBASE} \
 			${ICONV_CONFIGURE_ARG}
 NLS_CONFIGURE_OFF=	--without-libintl \
 			--without-iconv
 NLS_USES=	gettext iconv
 .for L in fr nl ru pt_BR
 NLS_PLIST_FILES+=	share/locale/${L}/LC_MESSAGES/pcb.mo
 .endfor
 MOTIF_DESC=	Motif widgets
 MOTIF_USES=	motif
 MOTIF_CONFIGURE_ON=	--with-gui=lesstif
 MOTIF_CONFIGURE_ENV=	WISH=${WISH}
 GTK_DESC=	GIMP ToolKit widgets
 GTK_USE=	GNOME=gtk20
 GTK_CONFIGURE_ON=	--with-gui=gtk
 GTK_CONFIGURE_ENV=	WISH=${WISH}
 NONE_DESC=	No GUI support
 NONE_CONFIGURE_ON=	--without-gui
 NONE_CONFIGURE_ENV=	WISH=/usr/bin/true
 
-ONLY_FOR_ARCHS=	i386 amd64
-ONLY_FOR_ARCHS_REASON=	uses x86-specific libc functions, has not been ported
-
 DOCS_INFO=		pcb
 
 .include <bsd.port.mk>
diff --git a/cad/pcb/files/patch-gts_rounding.h b/cad/pcb/files/patch-gts_rounding.h
new file mode 100644
index 000000000000..bb16d8e83a34
--- /dev/null
+++ b/cad/pcb/files/patch-gts_rounding.h
@@ -0,0 +1,16 @@
+--- gts/rounding.h.orig	Mon Jun 17 12:05:45 2002
++++ gts/rounding.h	Wed Sep 24 12:57:41 2003
+@@ -28,11 +28,11 @@
+                              _FPU_SETCW(fpu_round_double); }
+ #  define FPU_RESTORE       {_FPU_SETCW(fpu_init);}
+ #else /* not HAVE_FPU_CONTROL_H */
+-#  ifdef __FreeBSD__
++#  ifdef HAVE_FROATINGPOINT_H
+ #    include <floatingpoint.h>
+ #    define FPU_ROUND_DOUBLE  (fpsetprec(FP_PD))
+ #    define FPU_RESTORE       (fpsetprec(FP_PE))
+-#  else /* not __FreeBSD__ */
++#  else /* not HAVE_FROATINGPOINT_H */
+ #    ifdef WIN32
+ #      ifdef _MSC_VER
+ #        include <float.h>