Index: icedtea6/Makefile.am
===================================================================
--- icedtea6.orig/Makefile.am	2011-12-21 21:24:25.000000000 +0100
+++ icedtea6/Makefile.am	2011-12-21 22:50:11.649227590 +0100
@@ -538,6 +538,11 @@
 	JAVAC="" \
 	JAVA_HOME="" \
 	JDK_HOME="" \
+        OE_CFLAGS="$(OE_CFLAGS)" \
+        OE_CPPFLAGS="$(OE_CPPFLAGS)" \
+        OE_CXXFLAGS="$(OE_CXXFLAGS)" \
+        OE_LDFLAGS="$(OE_LDFLAGS)" \
+        OE_LAUNCHER_LDFLAGS="$(OE_LAUNCHER_LDFLAGS)" \
 	DISTRIBUTION_ID="$(DIST_ID)" \
 	DERIVATIVE_ID="$(ICEDTEA_NAME) $(PACKAGE_VERSION)$(ICEDTEA_REV)" \
 	DEBUG_CLASSFILES="true" \
@@ -1851,12 +1856,16 @@
 if BUILD_JAMVM
 	cd jamvm/jamvm && \
 	LDFLAGS="-Xlinker -z -Xlinker noexecstack" \
-	./autogen.sh --with-java-runtime-library=openjdk \
-	  --prefix=$(abs_top_builddir)/jamvm/install ; \
-	$(MAKE) ; \
-	$(MAKE) install
+       $(ARCH_PREFIX) ./autogen.sh --with-java-runtime-library=openjdk \
+	  --prefix=/usr/lib \
+	  --host=$(host_alias) \
+	  --build=$(build_alias) \
+	  --target=$(target_alias)  \
+	  --with-libtool-sysroot ; \
+	$(ARCH_PREFIX) $(MAKE) ; \
+	$(ARCH_PREFIX) $(MAKE) install DESTDIR=$(abs_top_builddir)/jamvm/install
 	mkdir -p $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/server
-	cp $(abs_top_builddir)/jamvm/install/lib/libjvm.so $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/server
+	cp $(abs_top_builddir)/jamvm/install/usr/lib/lib/libjvm.so $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/server
 	ln -sf server $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/client
 	touch $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/server/Xusage.txt
 	ln -sf client/libjvm.so $(abs_top_builddir)/jamvm/install/hotspot/jre/lib/$(INSTALL_ARCH_DIR)/libjsig.so
@@ -1874,7 +1883,7 @@
 stamps/add-jamvm.stamp: stamps/icedtea.stamp stamps/jamvm.stamp
 if ADD_JAMVM_BUILD
 	mkdir -p $(BUILD_JRE_ARCH_DIR)/jamvm
-	install -m 644 jamvm/install/lib/libjvm.so \
+	install -m 644 jamvm/install/usr/lib/lib/libjvm.so \
 		$(BUILD_JRE_ARCH_DIR)/jamvm/
 	printf -- '-jamvm KNOWN\n' >> $(BUILD_JRE_ARCH_DIR)/jvm.cfg
 else
@@ -1918,6 +1927,7 @@
 	  --host=$(host_alias) \
 	  --build=$(build_alias) \
 	  --target=$(target_alias) \
+	  --with-libtool-sysroot \
 	  --prefix=$(abs_top_builddir)/cacao/install \
 	  --with-java-runtime-library=openjdk \
 	  --with-java-runtime-library-prefix=$(abs_top_builddir)/openjdk \
@@ -1984,7 +1994,7 @@
 # configure script arguments, quoted in single quotes
 CONFIGURE_ARGS = @CONFIGURE_ARGS@
 ADD_ZERO_CONFIGURE_ARGS = \
-	--with-jdk-home=$(BUILD_OUTPUT_DIR)/j2sdk-image \
+	--with-jdk-home=$(abs_top_builddir)/bootstrap/jdk1.6.0 \
 	--enable-zero
 if ADD_SHARK_BUILD
 ADD_ZERO_CONFIGURE_ARGS += \
Index: icedtea6/javac.in
===================================================================
--- icedtea6.orig/javac.in	2011-12-21 21:24:30.000000000 +0100
+++ icedtea6/javac.in	2011-12-21 22:44:25.860460813 +0100
@@ -45,7 +45,9 @@
     my @CLASSPATH = ('@ECJ_JAR@');
     push @CLASSPATH, split /:/, $ENV{"CLASSPATH"} if exists $ENV{"CLASSPATH"};
     $ENV{"CLASSPATH"} = join ':', @CLASSPATH;
-    exec '@JAVA@', 'org.eclipse.jdt.internal.compiler.batch.Main', @ecj_parms, @ecj_args;
+    # Compiling hotspot-tools consumes tons of memory and exceeds any default
+    # limits for jamvm and cacao.
+    exec '@JAVA@', '-Xmx1024m', 'org.eclipse.jdt.internal.compiler.batch.Main', @ecj_parms, @ecj_args;
 }
 else
 {