CMakeDetermineRCCompiler.cmake 2.51 KB
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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.
#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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#  License text for the above reference.)

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# determine the compiler to use for RC programs
# NOTE, a generator may set CMAKE_RC_COMPILER before
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# loading this file to force a compiler.
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# use environment variable RC first if defined by user, next use
# the cmake variable CMAKE_GENERATOR_RC which can be defined by a generator
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# as a default compiler
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if(NOT CMAKE_RC_COMPILER)
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  # prefer the environment variable RC
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  if(NOT $ENV{RC} STREQUAL "")
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    get_filename_component(CMAKE_RC_COMPILER_INIT $ENV{RC} PROGRAM PROGRAM_ARGS CMAKE_RC_FLAGS_ENV_INIT)
    if(CMAKE_RC_FLAGS_ENV_INIT)
      set(CMAKE_RC_COMPILER_ARG1 "${CMAKE_RC_FLAGS_ENV_INIT}" CACHE STRING "First argument to RC compiler")
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    endif()
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    if(EXISTS ${CMAKE_RC_COMPILER_INIT})
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    else()
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      message(FATAL_ERROR "Could not find compiler set in environment variable RC:\n$ENV{RC}.")
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    endif()
  endif()
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  # next try prefer the compiler specified by the generator
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  if(CMAKE_GENERATOR_RC)
    if(NOT CMAKE_RC_COMPILER_INIT)
      set(CMAKE_RC_COMPILER_INIT ${CMAKE_GENERATOR_RC})
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    endif()
  endif()
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  # finally list compilers to try
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  if(CMAKE_RC_COMPILER_INIT)
    set(CMAKE_RC_COMPILER_LIST ${CMAKE_RC_COMPILER_INIT})
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  else()
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    set(CMAKE_RC_COMPILER_LIST rc)
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  endif()
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  # Find the compiler.
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  find_program(CMAKE_RC_COMPILER NAMES ${CMAKE_RC_COMPILER_LIST} DOC "RC compiler")
  if(CMAKE_RC_COMPILER_INIT AND NOT CMAKE_RC_COMPILER)
    set(CMAKE_RC_COMPILER "${CMAKE_RC_COMPILER_INIT}" CACHE FILEPATH "RC compiler" FORCE)
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  endif()
endif()
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mark_as_advanced(CMAKE_RC_COMPILER)
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get_filename_component(_CMAKE_RC_COMPILER_NAME_WE ${CMAKE_RC_COMPILER} NAME_WE)
if(_CMAKE_RC_COMPILER_NAME_WE STREQUAL "windres")
  set(CMAKE_RC_OUTPUT_EXTENSION .obj)
else()
  set(CMAKE_RC_OUTPUT_EXTENSION .res)
endif()
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# configure variables set in this file for fast reload later on
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configure_file(${CMAKE_ROOT}/Modules/CMakeRCCompiler.cmake.in
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               ${CMAKE_PLATFORM_INFO_DIR}/CMakeRCCompiler.cmake)
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set(CMAKE_RC_COMPILER_ENV_VAR "RC")