localhost ~ # gcc-config -c
i686-pc-linux-gnu-4.1.1
localhost ~ # gcc-config -l
 [1] i586-pc-linux-gnu-4.1.1 *

 [2] i586-pc-linux-uclibc-4.1.1 *

 [3] i686-pc-linux-gnu-4.1.1 *
localhost ~ # gcc-config 2 
 * Switching cross-compiler to i586-pc-linux-uclibc-4.1.1 ...                                                       [ ok ]
localhost ~ # gcc-config -c
i686-pc-linux-gnu-4.1.1