-PKG_SOURCE_URL:=http://www.mpfr.org/mpfr-$(PKG_VERSION)
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
-PKG_MD5SUM:=c5ee0a8ce82ad55fe29ac57edd35d09e
+PKG_SOURCE_URL:=http://www.mpfr.org/mpfr-$(PKG_VERSION) \
+ @GNU/mpfr
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_HASH:=67874a60826303ee2fb6affc6dc0ddd3e749e9bfcb4c8655e3953d0458a6e16e
+
+HOST_BUILD_PARALLEL:=1
+HOST_FIXUP:=autoreconf