CMake/Modules/CMakeTestFortranCompiler.cmake

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#=============================================================================
# Copyright 2004-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include(CMakeTestCompilerCommon)
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# This file is used by EnableLanguage in cmGlobalGenerator to
# determine that that selected Fortran compiler can actually compile
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# and link the most basic of programs. If not, a fatal error
# is set and cmake stops processing commands and will not generate
# any makefiles or projects.
if(NOT CMAKE_Fortran_COMPILER_WORKS)
PrintTestCompilerStatus("Fortran" "")
file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f "
PROGRAM TESTFortran
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PRINT *, 'Hello'
END
")
try_compile(CMAKE_Fortran_COMPILER_WORKS ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
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OUTPUT_VARIABLE OUTPUT)
set(FORTRAN_TEST_WAS_RUN 1)
endif()
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if(NOT CMAKE_Fortran_COMPILER_WORKS)
PrintTestCompilerStatus("Fortran" " -- broken")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the Fortran compiler works failed with "
"the following output:\n${OUTPUT}\n\n")
message(FATAL_ERROR "The Fortran compiler \"${CMAKE_Fortran_COMPILER}\" "
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"is not able to compile a simple test program.\nIt fails "
"with the following output:\n ${OUTPUT}\n\n"
"CMake will not be able to correctly generate this project.")
else()
if(FORTRAN_TEST_WAS_RUN)
PrintTestCompilerStatus("Fortran" " -- works")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the Fortran compiler works passed with "
"the following output:\n${OUTPUT}\n\n")
endif()
set(CMAKE_Fortran_COMPILER_WORKS 1 CACHE INTERNAL "")
if(CMAKE_Fortran_COMPILER_FORCED)
# The compiler configuration was forced by the user.
# Assume the user has configured all compiler information.
else()
# Try to identify the ABI and configure it into CMakeFortranCompiler.cmake
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
CMAKE_DETERMINE_COMPILER_ABI(Fortran ${CMAKE_ROOT}/Modules/CMakeFortranCompilerABI.F)
# Test for Fortran 90 support by using an f90-specific construct.
if(NOT DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
message(STATUS "Checking whether ${CMAKE_Fortran_COMPILER} supports Fortran 90")
file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompilerF90.f90 "
PROGRAM TESTFortran90
stop = 1 ; do while ( stop .eq. 0 ) ; end do
END PROGRAM TESTFortran90
")
try_compile(CMAKE_Fortran_COMPILER_SUPPORTS_F90 ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompilerF90.f90
OUTPUT_VARIABLE OUTPUT)
if(CMAKE_Fortran_COMPILER_SUPPORTS_F90)
message(STATUS "Checking whether ${CMAKE_Fortran_COMPILER} supports Fortran 90 -- yes")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the Fortran compiler supports Fortran 90 passed with "
"the following output:\n${OUTPUT}\n\n")
set(CMAKE_Fortran_COMPILER_SUPPORTS_F90 1)
else()
message(STATUS "Checking whether ${CMAKE_Fortran_COMPILER} supports Fortran 90 -- no")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the Fortran compiler supports Fortran 90 failed with "
"the following output:\n${OUTPUT}\n\n")
set(CMAKE_Fortran_COMPILER_SUPPORTS_F90 0)
endif()
unset(CMAKE_Fortran_COMPILER_SUPPORTS_F90 CACHE)
endif()
configure_file(
${CMAKE_ROOT}/Modules/CMakeFortranCompiler.cmake.in
Make platform information files specific to the CMake version At the top of a build tree we configure inside the CMakeFiles directory files such as "CMakeSystem.cmake" and "CMake<lang>Compiler.cmake" to save information detected about the system and compilers in use. The method of detection and the exact results store varies across CMake versions as things improve. This leads to problems when loading files configured by a different version of CMake. Previously we ignored such existing files only if the major.minor part of the CMake version component changed, and depended on the CMakeCache.txt to tell us the last version of CMake that wrote the files. This led to problems if the user deletes the CMakeCache.txt or we add required information to the files in a patch-level release of CMake (still a "feature point" release by modern CMake versioning convention). Ensure that we always have version-consistent platform information files by storing them in a subdirectory named with the CMake version. Every version of CMake will do its own system and compiler identification checks even when a build tree has already been configured by another version of CMake. Stored results will not clobber those from other versions of CMake which may be run again on the same tree in the future. Loaded results will match what the system and language modules expect. Rename the undocumented variable CMAKE_PLATFORM_ROOT_BIN to CMAKE_PLATFORM_INFO_DIR to clarify its purpose. The new variable points at the version-specific directory while the old variable did not.
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${CMAKE_PLATFORM_INFO_DIR}/CMakeFortranCompiler.cmake
@ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
)
Make platform information files specific to the CMake version At the top of a build tree we configure inside the CMakeFiles directory files such as "CMakeSystem.cmake" and "CMake<lang>Compiler.cmake" to save information detected about the system and compilers in use. The method of detection and the exact results store varies across CMake versions as things improve. This leads to problems when loading files configured by a different version of CMake. Previously we ignored such existing files only if the major.minor part of the CMake version component changed, and depended on the CMakeCache.txt to tell us the last version of CMake that wrote the files. This led to problems if the user deletes the CMakeCache.txt or we add required information to the files in a patch-level release of CMake (still a "feature point" release by modern CMake versioning convention). Ensure that we always have version-consistent platform information files by storing them in a subdirectory named with the CMake version. Every version of CMake will do its own system and compiler identification checks even when a build tree has already been configured by another version of CMake. Stored results will not clobber those from other versions of CMake which may be run again on the same tree in the future. Loaded results will match what the system and language modules expect. Rename the undocumented variable CMAKE_PLATFORM_ROOT_BIN to CMAKE_PLATFORM_INFO_DIR to clarify its purpose. The new variable points at the version-specific directory while the old variable did not.
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include(${CMAKE_PLATFORM_INFO_DIR}/CMakeFortranCompiler.cmake)
endif()
if(CMAKE_Fortran_SIZEOF_DATA_PTR)
foreach(f ${CMAKE_Fortran_ABI_FILES})
include(${f})
endforeach()
unset(CMAKE_Fortran_ABI_FILES)
endif()
endif()