UsingTheRightCompiler

[Ryan Schmidt]

On Nov 13, 2011, at 19:27, Matthew Cottrell wrote:

> I'm trying to use the right compiler, but ${configure.cpp} is empty on my system.  How do I satisfy a port that needs cpp?
> 
> I do have the other stuff
> 
> ${configure.cc}=/Developer/usr/bin/clang
> ${configure.cxx}=/Developer/usr/bin/clang++

configure.cpp should be populated for most compilers, but MacPorts does not set the CPP environment variable for you; doing so caused problems for more ports than it solved.

If you have a port that needs CPP set, set it yourself, as in:

configure.env CPP=${configure.cpp}

But I do see that configure.cpp is empty when the compiler is clang. Typically, when $(CPP) is empty, software will use "$(CC) -E". So you could try setting it that way.