This changes the compiler wrappers so that they are called by the same
name as the wrapped compiler. Many builds make assumptions about
compiler names, and we need the spack compilers to be recognizable so
that build systems will get their flags right.
This adds per-compiler subdirectories to lib/spack/spack/env directory
that contain symlinks to cc for the C, C++, F77, and F90
compilers. The build now sets CC, CXX, F77, and F90 to point to these
links instead of to the generically named cc, c++, f77, and f90
wrappers.
- Startup is much faster
- Added test for compiler wrapper parsing.
- Removed old compilation module that had to be imported by old cc.
- Removed cc from python version checks now that it's bash.
- Spack needed symlinks in env for fortran compilers.
- 'fc' is a bash bulitin, so can't use it for fortran compiler.
- switched to 'f90' for this.
- mpich 3 builds with fortran now.
- enabled shared libs in mpich package
- no more need for compiler python files.
- Default compilers are found in user's environment and added
to ~/.spackconfig automatically
- User can add new compilers by editing configuration file
- Consolidated build environment stuff from package.py into
build_environment.py
- package.py calls build_environment.py functions just before calling
install(), in do_install()
- Organization is better b/c SPACK_xxxx environment variables are now
in build_environment, the only place they're used. Were previously
cluttering globals.py.
