AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version],
[if test "$fp_have_gcc" = "YES"; then
fp_cv_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"
AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version],
[if test "$fp_have_gcc" = "YES"; then
fp_cv_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"