Removing default build of gcc

[Warner Losh]

On Jan 25, 2013, at 1:41 AM, David Chisnall wrote:

> Hi All,
> 
> In 10.0, the plan is not to ship any GPL'd code, so I'd like to start disconnecting things from the default build, starting with gcc.  I've been running a gcc-free system for a while, and I think all of the ports that don't build with clang are now explicitly depending on gcc.  Does anyone have strong opinions on when would be a good time for head on x86 and x86-64 to default to not building gcc?

clang is producing good code on arm and mips is it?

Also, if and when you do the switch, make sure you do it right. dtc is one example of something we don't build sometimes based on the target. Follow that example, or you'll break things :)

Warner