Modules/CMakeImportBuildSettings.cmake

   1 # - import build settings from another project
   2 #  CMAKE_IMPORT_BUILD_SETTINGS(SETTINGS_FILE)
   3 # macro defined to import the build settings from another project.
   4 # SETTINGS_FILE is a file created by the other project's call to the
   5 # CMAKE_EXPORT_BUILD_SETTINGS macro, see CMakeExportBuildSettings.
   6 MACRO(CMAKE_IMPORT_BUILD_SETTINGS SETTINGS_FILE)
   7   IF(${SETTINGS_FILE} MATCHES ".+")
   8     # Load the settings.
   9     INCLUDE(${SETTINGS_FILE})
  10
  11     # Check the CMake version that stored the settings.
  12     IF(${CMAKE_BUILD_SETTING_CMAKE_MAJOR_VERSION}.${CMAKE_BUILD_SETTING_CMAKE_MINOR_VERSION}
  13        GREATER ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
  14       MESSAGE(SEND_ERROR
  15               "${CMAKE_BUILD_SETTING_PROJECT_NAME} was built using CMake "
  16               "${CMAKE_BUILD_SETTING_CMAKE_MAJOR_VERSION}.${CMAKE_BUILD_SETTING_CMAKE_MINOR_VERSION}, "
  17               "but this is CMake${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.  "
  18               "Please upgrade CMake to a more recent version.")
  19     ENDIF(${CMAKE_BUILD_SETTING_CMAKE_MAJOR_VERSION}.${CMAKE_BUILD_SETTING_CMAKE_MINOR_VERSION}
  20        GREATER ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
  21
  22     # Check the build tool.
  23     SET(CMAKE_BUILD_TOOL1 "")
  24     IF(CMAKE_BUILD_TOOL)
  25       GET_FILENAME_COMPONENT (CMAKE_BUILD_TOOL1 ${CMAKE_BUILD_TOOL} NAME_WE)
  26       STRING(TOLOWER ${CMAKE_BUILD_TOOL1} CMAKE_BUILD_TOOL1)
  27     ENDIF(CMAKE_BUILD_TOOL)
  28     SET(CMAKE_BUILD_TOOL2 "")
  29     IF(CMAKE_BUILD_SETTING_BUILD_TOOL)
  30       GET_FILENAME_COMPONENT (CMAKE_BUILD_TOOL2 ${CMAKE_BUILD_SETTING_BUILD_TOOL} NAME_WE)
  31       STRING(TOLOWER ${CMAKE_BUILD_TOOL2} CMAKE_BUILD_TOOL2)
  32     ENDIF(CMAKE_BUILD_SETTING_BUILD_TOOL)
  33     STRING(COMPARE NOTEQUAL "x${CMAKE_BUILD_TOOL1}" "x${CMAKE_BUILD_TOOL2}"
  34            CMAKE_BUILD_TOOL_MISMATCH)
  35
  36     IF(CMAKE_BUILD_SETTING_BUILD_TOOL MATCHES "^msdev$")
  37       SET(CMAKE_IMPORT_BUILD_SETTINGS_IMPORTING_FROM_MS_STUDIO 1)
  38     ENDIF(CMAKE_BUILD_SETTING_BUILD_TOOL MATCHES "^msdev$")
  39     IF(CMAKE_BUILD_SETTING_BUILD_TOOL MATCHES "^devenv$")
  40       SET(CMAKE_IMPORT_BUILD_SETTINGS_IMPORTING_FROM_MS_STUDIO 1)
  41     ENDIF(CMAKE_BUILD_SETTING_BUILD_TOOL MATCHES "^devenv$")
  42
  43     # Check the C++ compiler setting.  If it is empty, the imported
  44     # project is not a C++ project, and doesn't need a matching compiler.
  45     IF(CMAKE_BUILD_SETTING_CXX_COMPILER)
  46       IF(WIN32)
  47         STRING(TOLOWER "x${CMAKE_CXX_COMPILER}" COMPARE_CXX_LOCAL)
  48         STRING(TOLOWER "x${CMAKE_BUILD_SETTING_CXX_COMPILER}" COMPARE_CXX_REMOTE)
  49         STRING(COMPARE NOTEQUAL "${COMPARE_CXX_LOCAL}" "${COMPARE_CXX_REMOTE}"
  50           CMAKE_CXX_COMPILER_MISMATCH)
  51       ELSE(WIN32)
  52         STRING(COMPARE NOTEQUAL
  53           "x${CMAKE_CXX_COMPILER}" "x${CMAKE_BUILD_SETTING_CXX_COMPILER}"
  54           CMAKE_CXX_COMPILER_MISMATCH)
  55       ENDIF(WIN32)
  56     ENDIF(CMAKE_BUILD_SETTING_CXX_COMPILER)
  57
  58     # Check the C build variation flags.
  59     STRING(COMPARE NOTEQUAL
  60            "x${CMAKE_C_FLAGS_DEBUG}" "x${CMAKE_BUILD_SETTING_C_FLAGS_DEBUG}"
  61            CMAKE_C_FLAGS_DEBUG_MISMATCH)
  62     STRING(COMPARE NOTEQUAL
  63            "x${CMAKE_C_FLAGS_RELEASE}" "x${CMAKE_BUILD_SETTING_C_FLAGS_RELEASE}"
  64            CMAKE_C_FLAGS_RELEASE_MISMATCH)
  65     STRING(COMPARE NOTEQUAL
  66            "x${CMAKE_C_FLAGS_MINSIZEREL}" "x${CMAKE_BUILD_SETTING_C_FLAGS_MINSIZEREL}"
  67            CMAKE_C_FLAGS_MINSIZEREL_MISMATCH)
  68     STRING(COMPARE NOTEQUAL
  69            "x${CMAKE_C_FLAGS_RELWITHDEBINFO}" "x${CMAKE_BUILD_SETTING_C_FLAGS_RELWITHDEBINFO}"
  70            CMAKE_C_FLAGS_RELWITHDEBINFO_MISMATCH)
  71
  72     # Check the C++ build variation flags.
  73     STRING(COMPARE NOTEQUAL
  74            "x${CMAKE_CXX_FLAGS_DEBUG}" "x${CMAKE_BUILD_SETTING_CXX_FLAGS_DEBUG}"
  75            CMAKE_CXX_FLAGS_DEBUG_MISMATCH)
  76     STRING(COMPARE NOTEQUAL
  77            "x${CMAKE_CXX_FLAGS_RELEASE}" "x${CMAKE_BUILD_SETTING_CXX_FLAGS_RELEASE}"
  78            CMAKE_CXX_FLAGS_RELEASE_MISMATCH)
  79     STRING(COMPARE NOTEQUAL
  80            "x${CMAKE_CXX_FLAGS_MINSIZEREL}" "x${CMAKE_BUILD_SETTING_CXX_FLAGS_MINSIZEREL}"
  81            CMAKE_CXX_FLAGS_MINSIZEREL_MISMATCH)
  82     STRING(COMPARE NOTEQUAL
  83            "x${CMAKE_CXX_FLAGS_RELWITHDEBINFO}" "x${CMAKE_BUILD_SETTING_CXX_FLAGS_RELWITHDEBINFO}"
  84            CMAKE_CXX_FLAGS_RELWITHDEBINFO_MISMATCH)
  85
  86     # Check the build type.
  87     SET(CMAKE_BUILD_TYPE_MISMATCH 0)
  88     IF(WIN32)
  89       IF(NOT CMAKE_IMPORT_BUILD_SETTINGS_IMPORTING_FROM_MS_STUDIO)
  90         STRING(COMPARE NOTEQUAL
  91                "x${CMAKE_BUILD_TYPE}" "x${CMAKE_BUILD_SETTING_BUILD_TYPE}"
  92                CMAKE_BUILD_TYPE_MISMATCH)
  93       ENDIF(NOT CMAKE_IMPORT_BUILD_SETTINGS_IMPORTING_FROM_MS_STUDIO)
  94     ENDIF(WIN32)
  95
  96     # Build tool must match on Windows.
  97     IF(WIN32)
  98       IF(CMAKE_BUILD_TOOL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
  99         MESSAGE(SEND_ERROR
 100                 "This project, ${PROJECT_NAME}, depends on the project "
 101                 "${CMAKE_BUILD_SETTING_PROJECT_NAME}. Unfortunately "
 102                 "${CMAKE_BUILD_SETTING_PROJECT_NAME} was built using "
 103                 "\"${CMAKE_BUILD_TOOL2}\", but you are trying to build "
 104                 "${PROJECT_NAME} using \"${CMAKE_BUILD_TOOL1}\"."
 105                 "In order for this build to succeed, both projects must be "
 106                 "built with the same Generator. To change the Generator you "
 107                 "are using for the project ${PROJECT_NAME}, you must "
 108                 "delete the cache, and then rerun cmake and this "
 109                 "time select the same Generator that was used to build "
 110                 "${CMAKE_BUILD_SETTING_PROJECT_NAME}. If "
 111                 "${CMAKE_BUILD_SETTING_PROJECT_NAME} was built using a "
 112                 "generator that you do not have (for example it was built "
 113                 "with Visual Studio 6 and you only have 7) then you will "
 114                 "need to select a different version of "
 115                 "${CMAKE_BUILD_SETTING_PROJECT_NAME} or rebuild "
 116                 "${CMAKE_BUILD_SETTING_PROJECT_NAME} with the correct "
 117                 "generator. ")
 118       ENDIF(CMAKE_BUILD_TOOL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 119     ENDIF(WIN32)
 120
 121     # Enforce the C++ compiler setting.
 122     # CMAKE_OVERRIDE_COMPILER_MISMATCH allow advanced user to override cmake detection of
 123     # compiler mismatch between imported projects. Typical case on UNIX could be:
 124     # 1. Compile a project with g++-3.3 while the imported project was configured
 125     # using the 'c++' alias (which at the time meant g++-3.3)
 126     # 2. This variable also becomes handy when the project your are importing has been
 127     # compiled with a compiler you do not have access to, but offer a compatible ABI with
 128     # yours.
 129     # WARNING: Do not use this variable with C++ compiler with incompatible ABI
 130     IF(CMAKE_CXX_COMPILER_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 131       MESSAGE("Warning: CMake is forcing CMAKE_CXX_COMPILER to "
 132               "\"${CMAKE_BUILD_SETTING_CXX_COMPILER}\" to match that imported "
 133               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  This is required "
 134               "because C++ projects must use the same compiler.  "
 135               "If this message appears for more than one imported project, "
 136               "you have conflicting C++ compilers and will have to "
 137               "re-build one of those projects. Was set to ${CMAKE_CXX_COMPILER}")
 138       SET(CMAKE_CXX_COMPILER ${CMAKE_BUILD_SETTING_CXX_COMPILER}
 139           CACHE STRING "C++ compiler imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 140     ENDIF(CMAKE_CXX_COMPILER_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 141
 142     # Enforce the build type.
 143     IF(CMAKE_BUILD_TYPE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 144       MESSAGE("Warning: CMake is forcing CMAKE_BUILD_TYPE to "
 145               "\"${CMAKE_BUILD_SETTING_BUILD_TYPE}\" to match that imported "
 146               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  This is required "
 147               "because projects must use the same compiler settings.  "
 148               "If this message appears for more than one imported project, "
 149               "you have conflicting compiler settings and will have to "
 150               "re-build one of those projects.")
 151       SET(CMAKE_BUILD_TYPE ${CMAKE_BUILD_SETTING_BUILD_TYPE}
 152           CACHE STRING "Build type imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 153     ENDIF(CMAKE_BUILD_TYPE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 154
 155     # Enforce the C build variation flags.
 156
 157     IF(CMAKE_C_FLAGS_DEBUG_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 158       MESSAGE("Warning: CMake is forcing CMAKE_C_FLAGS_DEBUG to "
 159               "\"${CMAKE_BUILD_SETTING_C_FLAGS_DEBUG}\" to match that imported "
 160               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 161               "If this message appears for more than one imported project, "
 162               "you have conflicting options and will have to "
 163               "re-build one of those projects.")
 164       SET(CMAKE_C_FLAGS_DEBUG ${CMAKE_BUILD_SETTING_C_FLAGS_DEBUG}
 165           CACHE STRING "C DEBUG flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 166     ENDIF(CMAKE_C_FLAGS_DEBUG_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 167
 168     IF(CMAKE_C_FLAGS_RELEASE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 169       MESSAGE("Warning: CMake is forcing CMAKE_C_FLAGS_RELEASE to "
 170               "\"${CMAKE_BUILD_SETTING_C_FLAGS_RELEASE}\" to match that imported "
 171               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 172               "If this message appears for more than one imported project, "
 173               "you have conflicting options and will have to "
 174               "re-build one of those projects.")
 175       SET(CMAKE_C_FLAGS_RELEASE ${CMAKE_BUILD_SETTING_C_FLAGS_RELEASE}
 176           CACHE STRING "C RELEASE flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 177     ENDIF(CMAKE_C_FLAGS_RELEASE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 178
 179     IF(CMAKE_C_FLAGS_MINSIZEREL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 180       MESSAGE("Warning: CMake is forcing CMAKE_C_FLAGS_MINSIZEREL to "
 181               "\"${CMAKE_BUILD_SETTING_C_FLAGS_MINSIZEREL}\" to match that imported "
 182               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 183               "If this message appears for more than one imported project, "
 184               "you have conflicting options and will have to "
 185               "re-build one of those projects.")
 186       SET(CMAKE_C_FLAGS_MINSIZEREL ${CMAKE_BUILD_SETTING_C_FLAGS_MINSIZEREL}
 187           CACHE STRING "C MINSIZEREL flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 188     ENDIF(CMAKE_C_FLAGS_MINSIZEREL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 189
 190     IF(CMAKE_C_FLAGS_RELWITHDEBINFO_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 191       MESSAGE("Warning: CMake is forcing CMAKE_C_FLAGS_RELWITHDEBINFO to "
 192               "\"${CMAKE_BUILD_SETTING_C_FLAGS_RELWITHDEBINFO}\" to match that imported "
 193               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 194               "If this message appears for more than one imported project, "
 195               "you have conflicting options and will have to "
 196               "re-build one of those projects.")
 197       SET(CMAKE_C_FLAGS_RELWITHDEBINFO ${CMAKE_BUILD_SETTING_C_FLAGS_RELWITHDEBINFO}
 198           CACHE STRING "C RELWITHDEBINFO flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 199     ENDIF(CMAKE_C_FLAGS_RELWITHDEBINFO_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 200
 201     # Enforce the C++ build variation flags.
 202
 203     IF(CMAKE_CXX_FLAGS_DEBUG_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 204       MESSAGE("Warning: CMake is forcing CMAKE_CXX_FLAGS_DEBUG to "
 205               "\"${CMAKE_BUILD_SETTING_CXX_FLAGS_DEBUG}\" to match that imported "
 206               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 207               "If this message appears for more than one imported project, "
 208               "you have conflicting options and will have to "
 209               "re-build one of those projects.")
 210       SET(CMAKE_CXX_FLAGS_DEBUG ${CMAKE_BUILD_SETTING_CXX_FLAGS_DEBUG}
 211           CACHE STRING "C++ DEBUG flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 212     ENDIF(CMAKE_CXX_FLAGS_DEBUG_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 213
 214     IF(CMAKE_CXX_FLAGS_RELEASE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 215       MESSAGE("Warning: CMake is forcing CMAKE_CXX_FLAGS_RELEASE to "
 216               "\"${CMAKE_BUILD_SETTING_CXX_FLAGS_RELEASE}\" to match that imported "
 217               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 218               "If this message appears for more than one imported project, "
 219               "you have conflicting options and will have to "
 220               "re-build one of those projects.")
 221       SET(CMAKE_CXX_FLAGS_RELEASE ${CMAKE_BUILD_SETTING_CXX_FLAGS_RELEASE}
 222           CACHE STRING "C++ RELEASE flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 223     ENDIF(CMAKE_CXX_FLAGS_RELEASE_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 224
 225     IF(CMAKE_CXX_FLAGS_MINSIZEREL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 226       MESSAGE("Warning: CMake is forcing CMAKE_CXX_FLAGS_MINSIZEREL to "
 227               "\"${CMAKE_BUILD_SETTING_CXX_FLAGS_MINSIZEREL}\" to match that imported "
 228               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 229               "If this message appears for more than one imported project, "
 230               "you have conflicting options and will have to "
 231               "re-build one of those projects.")
 232       SET(CMAKE_CXX_FLAGS_MINSIZEREL ${CMAKE_BUILD_SETTING_CXX_FLAGS_MINSIZEREL}
 233           CACHE STRING "C++ MINSIZEREL flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 234     ENDIF(CMAKE_CXX_FLAGS_MINSIZEREL_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 235
 236     IF(CMAKE_CXX_FLAGS_RELWITHDEBINFO_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 237       MESSAGE("Warning: CMake is forcing CMAKE_CXX_FLAGS_RELWITHDEBINFO to "
 238               "\"${CMAKE_BUILD_SETTING_CXX_FLAGS_RELWITHDEBINFO}\" to match that imported "
 239               "from ${CMAKE_BUILD_SETTING_PROJECT_NAME}.  "
 240               "If this message appears for more than one imported project, "
 241               "you have conflicting options and will have to "
 242               "re-build one of those projects.")
 243       SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO ${CMAKE_BUILD_SETTING_CXX_FLAGS_RELWITHDEBINFO}
 244           CACHE STRING "C++ RELWITHDEBINFO flags imported from ${CMAKE_BUILD_SETTING_PROJECT_NAME}." FORCE)
 245     ENDIF(CMAKE_CXX_FLAGS_RELWITHDEBINFO_MISMATCH AND NOT CMAKE_OVERRIDE_COMPILER_MISMATCH)
 246
 247   ELSE(${SETTINGS_FILE} MATCHES ".+")
 248     MESSAGE(SEND_ERROR "CMAKE_IMPORT_BUILD_SETTINGS called with no argument.")
 249   ENDIF(${SETTINGS_FILE} MATCHES ".+")
 250 ENDMACRO(CMAKE_IMPORT_BUILD_SETTINGS)