Steps to reproduce the issue

$ spack install gptune

Build fails; gptune doesn't seem to find mpi.h. Not sure if it's a problem in the code or in passing flags to cmake from spack. I'm attaching the spack-build-out.txt file.

@liuyangzhuan

Information on your system

• Spack: 0.17.1-677-c2e1a12cdf
• Python: 3.9.5
• Platform: linux-ubuntu21.04-sandybridge
• Concretizer: clingo

Additional information

spack-build-out.txt

General information

• I have run spack debug report and reported the version of Spack/Python/Platform
• I have run spack maintainers <name-of-the-package> and @mentioned any maintainers
• I have uploaded the build log and environment files
• I have searched the issues of this repo and believe this is not a duplicate