On 5/12/05, Martin Henne <[EMAIL PROTECTED]> wrote: > Robert Vangel wrote: > > When using Makefile's, look at the CC & GCC environmental variables (I'm > > not actually sure if G++ is included there... sorry...) > What is the environment variable to set the preprocessor to cpp-3.4 > instead of cpp?
Often, a Makefile will use the $(CC) variable as its C compiler and $(CXX) as its C++ compiler, and I believe gmake uses these in its implicit rules. The compiler itself should determine which version of cpp to use. If you only want to run the preprocessor, use "$(CC) -E" and redirect the output to a file. To try a specific compiler once (with a clean source code directory), the following should work: make CC=gcc-3.4 CXX=g++-3.4 If you're using autoconf, then in Makefile.in you could have the lines: CC := @CC@ CXX := @CXX@ and when running configure: ./configure CC=gcc-3.4 CXX=g++-3.4 When Makefile is generated from Makefile.in, you'll then end up with: CC := gcc-3.4 CXX := g++-3.4 All subsequent makes will use these compilers. -- Michael A. Marsh http://www.umiacs.umd.edu/~mmarsh http://mamarsh.blogspot.com
