+version_zlib = 1.2.3
+url_zlib = http://www.zlib.net/zlib-$(version_zlib).tar.gz
+
+version_expat = 2.0.0
+url_expat = http://umn.dl.sourceforge.net/sourceforge/expat/expat-$(version_expat).tar.gz
+configure_expat = --host= --target=mips-unknown-elf
+
+version_gmp = 4.1.4
+url_gmp = ftp://ftp.gnu.org/gnu/gmp/gmp-$(version_gmp).tar.gz
+configure_gmp = --host=mips-unknown-elf