Add PETSC_INC_DIRS etc. to ExternalLibraries/PETSc
Issue #972
new
The thorn ExternalLibraries/PETSc does not provide variables called PETSC_INC_DIRS, PETSC_LIB_DIRS, PETSC_LIBS to allow overriding the auto-detected defaults. When the auto-detecting mechanism fails, one currently has to use the global options SYS_INC_DIRS, LIBDIRS, and LIBS to ensure the PETSc files are found at build time.
Keyword: