diff --git a/configure.ac b/configure.ac
index 1646e5b30..492c8701e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -512,6 +512,8 @@ AC_ARG_ENABLE(xvfb,    	      AS_HELP_STRING([--enable-xvfb], [Build Xvfb server
 AC_ARG_ENABLE(xnest,   	      AS_HELP_STRING([--enable-xnest], [Build Xnest server (default: no)]), [XNEST=$enableval], [XNEST=no])
 AC_ARG_ENABLE(xquartz,        AS_HELP_STRING([--enable-xquartz], [Build Xquartz server for OS-X (default: auto)]), [XQUARTZ=$enableval], [XQUARTZ=auto])
 AC_ARG_ENABLE(x11app,         AS_HELP_STRING([--enable-x11app], [Build Apple's X11.app for Xquartz (default: auto)]), [X11APP=$enableval], [X11APP=auto])
+AC_ARG_WITH(x11app-archs,     AS_HELP_STRING([--with-x11app-archs=ARCHS], [Architectures to build X11.app for, space delimeted (default: "ppc i386")]), [X11APP_ARCHS=$enableval], [X11APP_ARCHS="ppc i386"])
+AC_SUBST([X11APP_ARCHS])
 AC_ARG_ENABLE(xwin,    	      AS_HELP_STRING([--enable-xwin], [Build XWin server (default: auto)]), [XWIN=$enableval], [XWIN=auto])
 AC_ARG_ENABLE(xprint,         AS_HELP_STRING([--enable-xprint], [Build Xprint extension and server (default: no)]), [XPRINT=$enableval], [XPRINT=no])
 AC_ARG_ENABLE(xgl,            AS_HELP_STRING([--enable-xgl], [Build Xgl server (default: no)]), [XGL=$enableval], [XGL=no])
diff --git a/hw/darwin/Makefile.am b/hw/darwin/Makefile.am
index 0d3ee0257..f82ed0273 100644
--- a/hw/darwin/Makefile.am
+++ b/hw/darwin/Makefile.am
@@ -1,11 +1,11 @@
 AM_CFLAGS = @XORG_CFLAGS@
 AM_CPPFLAGS = @XORG_INCS@ -I$(top_srcdir)/Xext -I$(top_srcdir)/miext/rootless -DUSE_NEW_CLUT -DBUILD_DATE=\"$(BUILD_DATE)\" -DHAVE_XORG_CONFIG_H -DXFree86Server -DINXQUARTZ
-  
+
 SUBDIRS = quartz utils
-  
+
 bin_PROGRAMS = Xquartz
 man1_MANS = apple/Xquartz.man
-  
+
 Xquartz_SOURCES = darwin.c \
 		  darwinEvents.c \
 		  darwinKeyboard.c \
@@ -43,7 +43,6 @@ Xquartz_LDADD = ./quartz/libXquartz.a \
 		$(top_builddir)/miext/rootless/accel/librlAccel.la \
 		$(DARWIN_LIBS) $(XSERVER_LIBS) -lXplugin
 
-
 Xquartz_LDFLAGS =  -XCClinker -Objc \
 		   -Wl,-u,_miDCInitialize \
 		   -Wl,-framework,Carbon \
@@ -57,16 +56,16 @@ if X11APP
 bin_SCRIPTS = x11app x11launcher
 
 x11app:
-	cd apple && xcodebuild CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)"
+	cd apple && xcodebuild CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" ARCHS="$(X11APP_ARCHS)"
 
 x11launcher:
-	cd launcher && xcodebuild CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)"
+	cd launcher && xcodebuild CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" ARCHS="$(X11APP_ARCHS)"
 
 x11app-install:
-	cd apple && xcodebuild install DSTROOT=$(DESTDIR) INSTALL_PATH=$(prefix) DEPLOYMENT_LOCATION=YES SKIP_INSTALL=NO
+	cd apple && xcodebuild install DSTROOT=$(DESTDIR) INSTALL_PATH=$(prefix) DEPLOYMENT_LOCATION=YES SKIP_INSTALL=NO ARCHS="$(X11APP_ARCHS)"
 
 x11launcher-install:
-	cd launcher && xcodebuild install DSTROOT=$(DESTDIR) INSTALL_PATH=$(APPLE_APPLICATIONS_DIR) DEPLOYMENT_LOCATION=YES SKIP_INSTALL=NO
+	cd launcher && xcodebuild install DSTROOT=$(DESTDIR) INSTALL_PATH=$(APPLE_APPLICATIONS_DIR) DEPLOYMENT_LOCATION=YES SKIP_INSTALL=NO ARCHS="$(X11APP_ARCHS)"
 
 x11app-clean:
 	rm -rf apple/build