Arbitrary mixed compiler #5655
Description
Is there a way to add an arbitrary compiler to compilers.yaml?
The case is that I'm on Mac OS High Sierra and to install openmpi I need gfortran from gcc. This forces me to have a mixed toolchain.
However, a mixed toolchain is not exactly recommended. If possible, I'd like to keep the pure clang compiler available (since it works for many packages) and define an arbitrary mixed toolchain as a workaround only for installing C and Fortran dependent packages, such as openmpi.
I have the system Clang, spack's Clang and spack's GCC installed. I'd like to add an additional compiler to compilers.yaml that has Clang for C/C++ compiler and gfortran, such as:
compilers:
- compiler:
environment: {}
extra_rpaths: []
flags: {}
modules: []
operating_system: highsierra
paths:
cc: /Library/Developer/CommandLineTools/usr/bin/clang
cxx: /Library/Developer/CommandLineTools/usr/bin/clang++
f77: null
fc: null
spec: [email protected]
target: x86_64
- compiler:
environment: {}
extra_rpaths: []
flags: {}
modules: []
operating_system: highsierra
paths:
cc: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/gcc
cxx: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/g++
f77: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/gfortran
fc: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/gfortran
spec: [email protected]
target: x86_64
- compiler:
environment: {}
extra_rpaths: []
flags: {}
modules: []
operating_system: highsierra
paths:
cc: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/llvm-4.0.1-6dr5en3gbmjerwkpvgjwelj3lawr7udu/bin/clang
cxx: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/llvm-4.0.1-6dr5en3gbmjerwkpvgjwelj3lawr7udu/bin/clang++
f77: null
fc: null
spec: [email protected]
target: x86_64
- compiler:
environment: {}
extra_rpaths: []
flags: {}
modules: []
operating_system: highsierra
paths:
cc: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/llvm-4.0.1-6dr5en3gbmjerwkpvgjwelj3lawr7udu/bin/clang
cxx: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/llvm-4.0.1-6dr5en3gbmjerwkpvgjwelj3lawr7udu/bin/clang++
f77: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/gfortran
fc: /Users/rodrigo/opt/spack-tools/opt/spack/darwin-highsierra-x86_64/clang-9.0.0-apple/gcc-7.2.0-s6yrqijmnetn5kogvcdubvnwqmxt6bzx/bin/gfortran
spec: [email protected]
target: x86_64
However, when I add the "mix" compiler, upon a spack compilers I get:
==> Available compilers
==> Error:
Is it possible to specify a compiler in this or a similar manner?