CMakeTestOBJCCompiler.cmake 3.8 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394
  1. # Distributed under the OSI-approved BSD 3-Clause License. See accompanying
  2. # file Copyright.txt or https://cmake.org/licensing for details.
  3. if(CMAKE_OBJC_COMPILER_FORCED)
  4. # The compiler configuration was forced by the user.
  5. # Assume the user has configured all compiler information.
  6. set(CMAKE_OBJC_COMPILER_WORKS TRUE)
  7. return()
  8. endif()
  9. include(CMakeTestCompilerCommon)
  10. # work around enforced code signing and / or missing exectuable target type
  11. set(__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE ${CMAKE_TRY_COMPILE_TARGET_TYPE})
  12. if(_CMAKE_FEATURE_DETECTION_TARGET_TYPE)
  13. set(CMAKE_TRY_COMPILE_TARGET_TYPE ${_CMAKE_FEATURE_DETECTION_TARGET_TYPE})
  14. endif()
  15. # Remove any cached result from an older CMake version.
  16. # We now store this in CMakeCCompiler.cmake.
  17. unset(CMAKE_OBJC_COMPILER_WORKS CACHE)
  18. # This file is used by EnableLanguage in cmGlobalGenerator to
  19. # determine that that selected Objective-C compiler can actually compile
  20. # and link the most basic of programs. If not, a fatal error
  21. # is set and cmake stops processing commands and will not generate
  22. # any makefiles or projects.
  23. if(NOT CMAKE_OBJC_COMPILER_WORKS)
  24. PrintTestCompilerStatus("OBJC" "")
  25. __TestCompiler_setTryCompileTargetType()
  26. file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCCompiler.m
  27. "#ifdef __cplusplus\n"
  28. "# error \"The CMAKE_OBJC_COMPILER is set to a C++ compiler\"\n"
  29. "#endif\n"
  30. "#ifndef __OBJC__\n"
  31. "# error \"The CMAKE_OBJC_COMPILER is not an Objective-C compiler\"\n"
  32. "#endif\n"
  33. "int main(int argc, char* argv[])\n"
  34. "{ (void)argv; return argc-1;}\n")
  35. try_compile(CMAKE_OBJC_COMPILER_WORKS ${CMAKE_BINARY_DIR}
  36. ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCCompiler.m
  37. OUTPUT_VARIABLE __CMAKE_OBJC_COMPILER_OUTPUT)
  38. # Move result from cache to normal variable.
  39. set(CMAKE_OBJC_COMPILER_WORKS ${CMAKE_OBJC_COMPILER_WORKS})
  40. unset(CMAKE_OBJC_COMPILER_WORKS CACHE)
  41. set(OBJC_TEST_WAS_RUN 1)
  42. __TestCompiler_restoreTryCompileTargetType()
  43. endif()
  44. if(NOT CMAKE_OBJC_COMPILER_WORKS)
  45. PrintTestCompilerStatus("OBJC" " -- broken")
  46. file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
  47. "Determining if the Objective-C compiler works failed with "
  48. "the following output:\n${__CMAKE_OBJC_COMPILER_OUTPUT}\n\n")
  49. string(REPLACE "\n" "\n " _output "${__CMAKE_OBJC_COMPILER_OUTPUT}")
  50. message(FATAL_ERROR "The Objective-C compiler\n \"${CMAKE_OBJC_COMPILER}\"\n"
  51. "is not able to compile a simple test program.\nIt fails "
  52. "with the following output:\n ${_output}\n\n"
  53. "CMake will not be able to correctly generate this project.")
  54. else()
  55. if(OBJC_TEST_WAS_RUN)
  56. PrintTestCompilerStatus("OBJC" " -- works")
  57. file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
  58. "Determining if the Objective-C compiler works passed with "
  59. "the following output:\n${__CMAKE_OBJC_COMPILER_OUTPUT}\n\n")
  60. endif()
  61. # Try to identify the ABI and configure it into CMakeOBJCCompiler.cmake
  62. include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
  63. CMAKE_DETERMINE_COMPILER_ABI(OBJC ${CMAKE_ROOT}/Modules/CMakeOBJCCompilerABI.m)
  64. # Try to identify the compiler features
  65. include(${CMAKE_ROOT}/Modules/CMakeDetermineCompileFeatures.cmake)
  66. CMAKE_DETERMINE_COMPILE_FEATURES(OBJC)
  67. # Re-configure to save learned information.
  68. configure_file(
  69. ${CMAKE_ROOT}/Modules/CMakeOBJCCompiler.cmake.in
  70. ${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCCompiler.cmake
  71. @ONLY
  72. )
  73. include(${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCCompiler.cmake)
  74. if(CMAKE_OBJC_SIZEOF_DATA_PTR)
  75. foreach(f ${CMAKE_OBJC_ABI_FILES})
  76. include(${f})
  77. endforeach()
  78. unset(CMAKE_OBJC_ABI_FILES)
  79. endif()
  80. endif()
  81. set(CMAKE_TRY_COMPILE_TARGET_TYPE ${__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE})
  82. unset(__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE)
  83. unset(__CMAKE_OBJC_COMPILER_OUTPUT)