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Bias Fortran compiler search with C/C++ compilers

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When CMAKE_Fortran_COMPILER and ENV{FC} are not defined CMake searches
for an available Fortran compiler.  This commit teaches the search code
to look for compiler executables next to the C and C++ compilers if they
are already found.  Furthermore, we bias the compiler executable name
preference order based on the vendor of the C and C++ compilers, which
increases the chance of finding a compatible compiler by default.
This commit is contained in:
Brad King 2009-09-09 16:39:47 -04:00
parent 4678c619ce
commit 4debb7ac69
1 changed files with 35 additions and 0 deletions
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35
Modules/CMakeDetermineFortranCompiler.cmake
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@ -56,9 +56,44 @@ IF(NOT CMAKE_Fortran_COMPILER)
ifort ifc efc f95 pgf95 lf95 xlf95 fort gfortran gfortran-4 g95 f90
pgf90 xlf90 epcf90 fort77 frt pgf77 xlf fl32 af77 g77 f77
)
# Vendor-specific compiler names.
SET(_Fortran_COMPILER_NAMES_GNU gfortran gfortran-4 g95 g77)
SET(_Fortran_COMPILER_NAMES_Intel ifort ifc efc)
SET(_Fortran_COMPILER_NAMES_PGI pgf95 pgf90 pgf77)
SET(_Fortran_COMPILER_NAMES_XL xlf)
SET(_Fortran_COMPILER_NAMES_VisualAge xlf95 xlf90 xlf)
# Prefer vendors matching the C and C++ compilers.
SET(CMAKE_Fortran_COMPILER_LIST
${_Fortran_COMPILER_NAMES_${CMAKE_C_COMPILER_ID}}
${_Fortran_COMPILER_NAMES_${CMAKE_CXX_COMPILER_ID}}
${CMAKE_Fortran_COMPILER_LIST})
LIST(REMOVE_DUPLICATES CMAKE_Fortran_COMPILER_LIST)
ENDIF(CMAKE_Fortran_COMPILER_INIT)
# Look for directories containing the C and C++ compilers.
SET(_Fortran_COMPILER_HINTS)
FOREACH(lang C CXX)
IF(CMAKE_${lang}_COMPILER AND IS_ABSOLUTE "${CMAKE_${lang}_COMPILER}")
GET_FILENAME_COMPONENT(_hint "${CMAKE_${lang}_COMPILER}" PATH)
IF(IS_DIRECTORY "${_hint}")
LIST(APPEND _Fortran_COMPILER_HINTS "${_hint}")
ENDIF()
SET(_hint)
ENDIF()
ENDFOREACH()
# Find the compiler.
IF(_Fortran_COMPILER_HINTS)
# Prefer directories containing C and C++ compilers.
LIST(REMOVE_DUPLICATES _Fortran_COMPILER_HINTS)
FIND_PROGRAM(CMAKE_Fortran_COMPILER
NAMES ${CMAKE_Fortran_COMPILER_LIST}
PATHS ${_Fortran_COMPILER_HINTS}
NO_DEFAULT_PATH
DOC "Fortran compiler")
ENDIF()
FIND_PROGRAM(CMAKE_Fortran_COMPILER NAMES ${CMAKE_Fortran_COMPILER_LIST} DOC "Fortran compiler")
IF(CMAKE_Fortran_COMPILER_INIT AND NOT CMAKE_Fortran_COMPILER)
SET(CMAKE_Fortran_COMPILER "${CMAKE_Fortran_COMPILER_INIT}" CACHE FILEPATH "Fortran compiler" FORCE)