Linux 4.19 kernel will require gcc 4.6
It looks like the upcoming Linux 4.19 kernel now requires gcc version 4.6.
Linux 4.19 Raises The GCC Minimum Version
RHEL 6 uses gcc 4.4. While the new requirement would not directly impact us, end users, RH kernel engineers may need to do some work if/when they do backports from newer kernels to the RHEL-6 kernel.
Akemi