cmake_modules/CMakeDeterminePascalCompiler.cmake
author Periklis Ntanasis <pntanasis@gmail.com>
Sun, 22 Sep 2013 17:37:57 +0300
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# Determine the compiler to use for Pascal programs
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# NOTE, a generator may set CMAKE_Pascal_COMPILER before
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# loading this file to force a compiler.
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# use environment variable Pascal first if defined by user, next use
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# the cmake variable CMAKE_GENERATOR_PASCAL which can be defined by a generator
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# as a default compiler
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if(NOT CMAKE_Pascal_COMPILER)
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    # prefer the environment variable FPC
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    if($ENV{FPC} MATCHES ".+")
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        get_filename_component(CMAKE_Pascal_COMPILER_INIT $ENV{FPC} PROGRAM PROGRAM_ARGS CMAKE_Pascal_FLAGS_ENV_INIT)
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        if(CMAKE_Pascal_FLAGS_ENV_INIT)
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            set(CMAKE_Pascal_COMPILER_ARG1 "${CMAKE_Pascal_FLAGS_ENV_INIT}" CACHE STRING "First argument to Pascal compiler")
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        endif(CMAKE_Pascal_FLAGS_ENV_INIT)
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        if(EXISTS ${CMAKE_Pascal_COMPILER_INIT})
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        else(EXISTS ${CMAKE_Pascal_COMPILER_INIT})
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            message(FATAL_ERROR "Could not find compiler set in environment variable FPC:\n$ENV{FPC}.")
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        endif(EXISTS ${CMAKE_Pascal_COMPILER_INIT})
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    endif($ENV{FPC} MATCHES ".+")
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    # next try prefer the compiler specified by the generator
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    if(CMAKE_GENERATOR_PASCAL)
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        if(NOT CMAKE_Pascal_COMPILER_INIT)
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            set(CMAKE_Pascal_COMPILER_INIT ${CMAKE_GENERATOR_PASCAL})
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        endif(NOT CMAKE_Pascal_COMPILER_INIT)
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    endif(CMAKE_GENERATOR_PASCAL)
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    # finally list compilers to try
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    if(CMAKE_Pascal_COMPILER_INIT)
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        set(CMAKE_Pascal_COMPILER_LIST ${CMAKE_Pascal_COMPILER_INIT})
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    else(CMAKE_Pascal_COMPILER_INIT)
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        set(CMAKE_Pascal_COMPILER_LIST fpc)
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    endif(CMAKE_Pascal_COMPILER_INIT)
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    # Find the compiler.
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    find_program(CMAKE_Pascal_COMPILER NAMES ${CMAKE_Pascal_COMPILER_LIST} DOC "Pascal compiler")
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    if(CMAKE_Pascal_COMPILER_INIT AND NOT CMAKE_Pascal_COMPILER)
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        set(CMAKE_Pascal_COMPILER "${CMAKE_Pascal_COMPILER_INIT}" CACHE FILEPATH "Pascal compiler" FORCE)
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    endif(CMAKE_Pascal_COMPILER_INIT AND NOT CMAKE_Pascal_COMPILER)
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endif(NOT CMAKE_Pascal_COMPILER)
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mark_as_advanced(CMAKE_Pascal_COMPILER)
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if(NOT CMAKE_Pascal_COMPILER_VERSION)
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    execute_process(COMMAND ${CMAKE_Pascal_COMPILER} -iV
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                    OUTPUT_VARIABLE CMAKE_Pascal_COMPILER_VERSION
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                    OUTPUT_STRIP_TRAILING_WHITESPACE
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                    ) # we assume no error for something so simple
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endif(NOT CMAKE_Pascal_COMPILER_VERSION)
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mark_as_advanced(CMAKE_Pascal_COMPILER_VERSION)
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get_filename_component(COMPILER_LOCATION "${CMAKE_Pascal_COMPILER}" PATH)
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# configure variables set in this file for fast reload later on
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if(${CMAKE_VERSION} VERSION_LESS 2.8.10)
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    configure_file(${CMAKE_MODULE_PATH}/CMakePascalCompiler.cmake.in
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                   "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakePascalCompiler.cmake"
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                   IMMEDIATE )
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else(${CMAKE_VERSION} VERSION_LESS 2.8.10)
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    configure_file(${CMAKE_MODULE_PATH}/CMakePascalCompiler.cmake.in
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                  "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/${CMAKE_VERSION}/CMakePascalCompiler.cmake"
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                   IMMEDIATE )
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endif(${CMAKE_VERSION} VERSION_LESS 2.8.10)
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set(CMAKE_Pascal_COMPILER_ENV_VAR "FPC")
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