Modules/CMakeBackwardCompatibilityC.cmake

   1
   2 #=============================================================================
   3 # Copyright 2002-2009 Kitware, Inc.
   4 #
   5 # Distributed under the OSI-approved BSD License (the "License");
   6 # see accompanying file Copyright.txt for details.
   7 #
   8 # This software is distributed WITHOUT ANY WARRANTY; without even the
   9 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10 # See the License for more information.
  11 #=============================================================================
  12 # (To distribute this file outside of CMake, substitute the full
  13 #  License text for the above reference.)
  14
  15 # Nothing here yet
  16 if(CMAKE_GENERATOR MATCHES "Visual Studio 7")
  17   include(CMakeVS7BackwardCompatibility)
  18   set(CMAKE_SKIP_COMPATIBILITY_TESTS 1)
  19 endif()
  20 if(CMAKE_GENERATOR MATCHES "Visual Studio 6")
  21   include(CMakeVS6BackwardCompatibility)
  22   set(CMAKE_SKIP_COMPATIBILITY_TESTS 1)
  23 endif()
  24
  25 if(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
  26   # Old CMake versions did not support OS X universal binaries anyway,
  27   # so just get through this with at least some size for the types.
  28   list(LENGTH CMAKE_OSX_ARCHITECTURES NUM_ARCHS)
  29   if(${NUM_ARCHS} GREATER 1)
  30     if(NOT DEFINED CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  31       message(WARNING "This module does not work with OS X universal binaries.")
  32       set(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES 1)
  33       list(GET CMAKE_OSX_ARCHITECTURES 0 CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  34     endif()
  35   endif()
  36
  37   include (CheckTypeSize)
  38   CHECK_TYPE_SIZE(int      CMAKE_SIZEOF_INT)
  39   CHECK_TYPE_SIZE(long     CMAKE_SIZEOF_LONG)
  40   CHECK_TYPE_SIZE("void*"  CMAKE_SIZEOF_VOID_P)
  41   CHECK_TYPE_SIZE(char     CMAKE_SIZEOF_CHAR)
  42   CHECK_TYPE_SIZE(short    CMAKE_SIZEOF_SHORT)
  43   CHECK_TYPE_SIZE(float    CMAKE_SIZEOF_FLOAT)
  44   CHECK_TYPE_SIZE(double   CMAKE_SIZEOF_DOUBLE)
  45
  46   include (CheckIncludeFile)
  47   CHECK_INCLUDE_FILE("limits.h"       CMAKE_HAVE_LIMITS_H)
  48   CHECK_INCLUDE_FILE("unistd.h"       CMAKE_HAVE_UNISTD_H)
  49   CHECK_INCLUDE_FILE("pthread.h"      CMAKE_HAVE_PTHREAD_H)
  50
  51   include (CheckIncludeFiles)
  52   CHECK_INCLUDE_FILES("sys/types.h;sys/prctl.h"    CMAKE_HAVE_SYS_PRCTL_H)
  53
  54   include (TestBigEndian)
  55   TEST_BIG_ENDIAN(CMAKE_WORDS_BIGENDIAN)
  56   include (FindX11)
  57
  58   if("${X11_X11_INCLUDE_PATH}" MATCHES "^/usr/include$")
  59     set (CMAKE_X_CFLAGS "" CACHE STRING "X11 extra flags.")
  60   else()
  61     set (CMAKE_X_CFLAGS "-I${X11_X11_INCLUDE_PATH}" CACHE STRING
  62          "X11 extra flags.")
  63   endif()
  64   set (CMAKE_X_LIBS "${X11_LIBRARIES}" CACHE STRING
  65        "Libraries and options used in X11 programs.")
  66   set (CMAKE_HAS_X "${X11_FOUND}" CACHE INTERNAL "Is X11 around.")
  67
  68   include (FindThreads)
  69
  70   set (CMAKE_THREAD_LIBS        "${CMAKE_THREAD_LIBS_INIT}" CACHE STRING
  71     "Thread library used.")
  72
  73   set (CMAKE_USE_PTHREADS       "${CMAKE_USE_PTHREADS_INIT}" CACHE BOOL
  74      "Use the pthreads library.")
  75
  76   set (CMAKE_USE_WIN32_THREADS  "${CMAKE_USE_WIN32_THREADS_INIT}" CACHE BOOL
  77        "Use the win32 thread library.")
  78
  79   set (CMAKE_HP_PTHREADS        ${CMAKE_HP_PTHREADS_INIT} CACHE BOOL
  80      "Use HP pthreads.")
  81
  82   set (CMAKE_USE_SPROC          ${CMAKE_USE_SPROC_INIT} CACHE BOOL
  83      "Use sproc libs.")
  84
  85   if(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  86     set(CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  87     set(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
  88   endif()
  89 endif()
  90
  91 mark_as_advanced(
  92 CMAKE_HP_PTHREADS
  93 CMAKE_THREAD_LIBS
  94 CMAKE_USE_PTHREADS
  95 CMAKE_USE_SPROC
  96 CMAKE_USE_WIN32_THREADS
  97 CMAKE_X_CFLAGS
  98 CMAKE_X_LIBS
  99 )
 100