Clifford Wolf:

package/base/gcc/gcc.conf

@@ -142,6 +142,9 @@ custmain() {
 		confopt="$confopt --disable-multilib"
 	fi
 
+	# do not install gc headers
+	sed -i 's, install-includeHEADERS,,;' ../boehm-gc/include/Makefile.in
+
 	# In stage 1 everything is a little bit more complicated
 	#
 	if [ $stagelevel -le 1 ] ; then