How do I do I run gcc-49 with just 'gcc' on OSX?

问题

I recently installed gcc 4.9, with a previous version of gcc that was installed by default before.

When I type gcc, the previous version of gcc runs. How could I make my newly installed gcc 4.9 run when I type gcc?

回答1:

You should do this:

cd /usr/bin
mv gcc gcc-old
ln -s gcc-4.9 gcc

Or you should have a look to gcc_select

来源：https://stackoverflow.com/questions/23280834/how-do-i-do-i-run-gcc-49-with-just-gcc-on-osx