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# cmake/modules/language_support.cmake
#
# Temporary additional general language support is contained within this
# file.
# This additional function definition is needed to provide a workaround for
# CMake bug 9220.
option(ENABLE_workaround_9220 "Enable a workaround for cmake bug 9220" ON)
if(ENABLE_workaround_9220)
option(ENABLE_compiler_diagnostics "Enable printing out full CMake messages when CMake discovers a compiler does not work" OFF)
function(workaround_9220 language language_works)
#message("DEBUG: language = ${language}")
# MAINTENANCE
# Use same minimum version for all platforms as the Linux platform minimum adopted for
# the PLplot project.
set(text
"cmake_minimum_required(VERSION 3.7.2 FATAL_ERROR)
project(test NONE)
# Locations where PLplot cmake build system first looks for cmake modules.
set(CMAKE_MODULE_PATH
\"${PROJECT_SOURCE_DIR}/cmake/modules\"
\"${PROJECT_SOURCE_DIR}/cmake/modules/language_support/cmake\"
)
message(STATUS \"CMAKE_GENERATOR = ${CMAKE_GENERATOR}\")
#enable_language(${language} OPTIONAL)
enable_language(${language})
"
)
file(REMOVE_RECURSE ${CMAKE_BINARY_DIR}/language_tests/${language})
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/language_tests/${language})
file(WRITE ${CMAKE_BINARY_DIR}/language_tests/${language}/CMakeLists.txt
${text})
# MAINTENANCE
# Special language support files for various languages:
# N.B. This list of files has to be maintained to be consistent
# with anything special we do in terms of language support.
if(language STREQUAL "Ada")
set(language_special ON)
set(language_files
language_support/cmake/CMakeAdaCompiler.cmake.in
language_support/cmake/CMakeAdaInformation.cmake
language_support/cmake/CMakeDetermineAdaCompiler.cmake
language_support/cmake/CMakeTestAdaCompiler.cmake
language_support/cmake/Platform/CYGWIN-GNU-Ada.cmake
language_support/cmake/Platform/Darwin-GNU-Ada.cmake
language_support/cmake/Platform/Linux-GNU-Ada.cmake
language_support/cmake/Platform/Windows-GNU-Ada.cmake
language_support/cmake/Compiler/GNU-Ada.cmake
)
elseif(language STREQUAL "D")
set(language_special ON)
set(language_files
language_support/cmake/CMakeDCompiler.cmake.in
language_support/cmake/CMakeDInformation.cmake
language_support/cmake/CMakeDetermineDCompiler.cmake
language_support/cmake/CMakeTestDCompiler.cmake
language_support/cmake/Platform/Linux-dmd.cmake
language_support/cmake/Platform/Linux-gdc.cmake
language_support/cmake/Platform/Windows-dmd.cmake
language_support/cmake/Platform/Windows-gdc.cmake
)
elseif(language STREQUAL "Fortran")
set(language_special OFF)
else(language STREQUAL "Ada")
set(language_special OFF)
endif(language STREQUAL "Ada")
if(language_special)
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/language_tests/${language}/cmake/modules/Platform)
foreach(file ${language_files})
configure_file(
${CMAKE_SOURCE_DIR}/cmake/modules/${file}
${CMAKE_BINARY_DIR}/language_tests/${language}/cmake/modules/${file}
COPYONLY
)
endforeach(file ${language_files})
endif(language_special)
execute_process(
COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR} .
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/language_tests/${language}
RESULT_VARIABLE return_code
OUTPUT_VARIABLE output
ERROR_VARIABLE output
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
if(return_code EQUAL 0)
set(${language_works} ON CACHE INTERNAL "")
else(return_code EQUAL 0)
set(${language_works} OFF CACHE INTERNAL "")
if(ENABLE_compiler_diagnostics)
message(STATUS "A test cmake run with language = ${language} enabled failed with the following output:")
message("---------------------------------------------------------------------------------------------------------")
message("${output}")
message("---------------------------------------------------------------------------------------------------------")
else(ENABLE_compiler_diagnostics)
message(STATUS "A test cmake run with language = ${language} enabled failed.")
message(STATUS "Specify -DENABLE_compiler_diagnostics=ON to see full CMake diagnostics concerning this failure.")
endif(ENABLE_compiler_diagnostics)
endif(return_code EQUAL 0)
endfunction(workaround_9220)
else(ENABLE_workaround_9220)
function(workaround_9220 language language_works)
# Dummy version that always returns success.
set(${language_works} ON CACHE INTERNAL "")
endfunction(workaround_9220)
endif(ENABLE_workaround_9220)
# Temporary tests of the above function.
#workaround_9220(CXX CXX_language_works)
#message("CXX_language_works = ${CXX_language_works}")
#workaround_9220(CXXp CXXp_language_works)
#message("CXXp_language_works = ${CXXp_language_works}")
#workaround_9220(Ada Ada_language_works)
#message("Ada_language_works = ${Ada_language_works}")
#workaround_9220(D D_language_works)
#message("D_language_works = ${D_language_works}")
#workaround_9220(Fortran Fortran_language_works)
#message("Fortran_language_works = ${Fortran_language_works}")
#workaround_9220(Java Java_language_works)
#message("Java_language_works = ${Java_language_works}")
# Just to terminate temporary test for convenience.
#message(FATAL_ERROR "")
|
