-fpkg ${MPFR} "http://www.mpfr.org/mpfr-current"
-fpkg ${PPL} "http://www.cs.unipr.it/ppl/Download/ftp/releases/$(get_pkg_ver ${PPL})"
+fpkg_gnu ${MPFR}
+fpkg -e "tar.gz" ${MPC} "http://www.multiprecision.org/mpc/download"
+fpkg -s "$(get_pkg_ver ${PPL})" ${PPL} \
+ "http://www.cs.unipr.it/ppl/Download/ftp/releases"