I had been using the armv7hl-mandriva-linux-gnueabi- cross-compiler, but that gcc version is a bit out-of-date now (version 4.6.1).

I found a more recent version, for Fedora, here:  http://rpmfind.net//linux/RPM/fedora/updates/testing/21/x86_64/g/gcc-arm-linux-gnu-4.9.2-3.fc21.x86_64.html

Using yum, this will also install binutils-arm-linux-gnu-2.25-3.fc21.x86_64 and cross-gcc-common-4.9.2-3.fc21.noarch and cross-binutils-common-2.25-3.fc21.noarch, to prvide the rest of the cross-compile environment.

It should be noted that this is only suitable for cross-compiling kernels, and does not provide an environment for cross-compiling userland source rpms etc.. which would require a substantial number of additional cross-compile rpm packages..

The gcc version is now 4.9.2, and can be accessed by substituting export CROSS_COMPILE=arm-linux-gnu- in the recent examples for Raspberry Pi and DreamPlug.

Robert Gadsdon.  March 10, 2015