Add switch to every gcc/g++ call

[tecknophreak]

I was wondering if there was a way to add a switch to a gcc/g++ call everytime. I have a few libraries that I need to compile for different processors. Each has a makefile which calls gcc to compile. Here is the best option I could come up with so far:

Include a Makefile and define CC as gcc -mcpu=xxx.

Are there any others/better?

[ph34r]

alias gcc="/usr/bin/gcc -mcpu=foo"

[tecknophreak]

Sweet, that's what I was looking for, thanks!

[ph34r]

You'll probably want to put this in your ~/.bash_profile or ~/.bashrc so it "sticks" between logins. If you want it system wide for everyone, then /etc/profile or /etc/bashrc

[bwkaz]

make CC="/usr/bin/gcc -mcpu=xxxx"

should also work, assuming your makefiles are sane. Setting CC this way (as opposed to setting it in the environment) will override whatever the Makefile has it set to. (The Makefile can set it to anything it likes, but it won't take effect.) Any sane Makefile lets you override the compiler this way, and always calls the compiler like:

$(CC) [other options] [file]

(i.e. no quotes around $(CC)), so the space that you add will actually work.

(You could also do a wrapper script, but that's overkill if you can just override the compiler.)

CFLAGS is another variable that you can sometimes use to add options to the compiler invocation in Makefiles, but they often set their own CFLAGS, so you have to figure out how to specify all of them rather than just the one flag you want to add.