selecting gcc4 over gcc

leone8 · 01-04-2008, 09:50 AM

Hi All
On our Red Hat Enterprise 4 machine we have two compilers installed. GCC version 3.4.6 which is installed as /usr/bin/gcc and /usr/bin/g++ and the newer GCC 4.1.0 which is installed as /usr/bin/gcc4 and /usr/bin/g++4.

As a total linux newbie I am attempting to build a program which requires the later compiler but the configure script always chooses the g++ compiler. Can anyone tell me how I go about specifying the later compiler and forcing the build to use gcc4?

Thanks

btmiller · 01-04-2008, 12:59 PM

alias gcc=gcc4

should do it.

If that doesn't work for some reason, try

export CC=gcc4

before running make.

Daws · 01-04-2008, 01:38 PM

Essentially the same thing as btmiller said but you might want to run configure as:

Code:

CC=gcc4 ./configure --prefix=...[etc]

In this case CC=gcc4 is only valid for the one command. It saves you having to change CC or unset the alias later.