+ # Determine whether the default compiler uses glibc.
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <features.h>
+ #if __GLIBC__ >= 2
+ LIBC=gnu
+ #else
+ LIBC=
+ #endif
+EOF
+ eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^LIBC=`
+ # GNU/KFreeBSD systems have a "k" prefix to indicate we are using
+ # FreeBSD's kernel, but not the complete OS.
+ case ${LIBC} in gnu) kernel_only='k' ;; esac
+ echo ${UNAME_MACHINE}-unknown-${kernel_only}freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`${LIBC:+-$LIBC}