1 files changed, 100 insertions, 0 deletions
diff --git a/Modules/CMakeBackwardCompatibilityC.cmake b/Modules/CMakeBackwardCompatibilityC.cmake
new file mode 100644
index 0000000..4783d68
--- /dev/null
+++ b/Modules/CMakeBackwardCompatibilityC.cmake
@@ -0,0 +1,100 @@
+
+#=============================================================================
+# Copyright 2002-2009 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.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+# Nothing here yet
+if(CMAKE_GENERATOR MATCHES "Visual Studio 7")
+  include(CMakeVS7BackwardCompatibility)
+  set(CMAKE_SKIP_COMPATIBILITY_TESTS 1)
+endif()
+if(CMAKE_GENERATOR MATCHES "Visual Studio 6")
+  include(CMakeVS6BackwardCompatibility)
+  set(CMAKE_SKIP_COMPATIBILITY_TESTS 1)
+endif()
+
+if(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
+  # Old CMake versions did not support OS X universal binaries anyway,
+  # so just get through this with at least some size for the types.
+  list(LENGTH CMAKE_OSX_ARCHITECTURES NUM_ARCHS)
+  if(${NUM_ARCHS} GREATER 1)
+    if(NOT DEFINED CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
+      message(WARNING "This module does not work with OS X universal binaries.")
+      set(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES 1)
+      list(GET CMAKE_OSX_ARCHITECTURES 0 CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
+    endif()
+  endif()
+
+  include (CheckTypeSize)
+  CHECK_TYPE_SIZE(int      CMAKE_SIZEOF_INT)
+  CHECK_TYPE_SIZE(long     CMAKE_SIZEOF_LONG)
+  CHECK_TYPE_SIZE("void*"  CMAKE_SIZEOF_VOID_P)
+  CHECK_TYPE_SIZE(char     CMAKE_SIZEOF_CHAR)
+  CHECK_TYPE_SIZE(short    CMAKE_SIZEOF_SHORT)
+  CHECK_TYPE_SIZE(float    CMAKE_SIZEOF_FLOAT)
+  CHECK_TYPE_SIZE(double   CMAKE_SIZEOF_DOUBLE)
+
+  include (CheckIncludeFile)
+  CHECK_INCLUDE_FILE("limits.h"       CMAKE_HAVE_LIMITS_H)
+  CHECK_INCLUDE_FILE("unistd.h"       CMAKE_HAVE_UNISTD_H)
+  CHECK_INCLUDE_FILE("pthread.h"      CMAKE_HAVE_PTHREAD_H)
+
+  include (CheckIncludeFiles)
+  CHECK_INCLUDE_FILES("sys/types.h;sys/prctl.h"    CMAKE_HAVE_SYS_PRCTL_H)
+
+  include (TestBigEndian)
+  TEST_BIG_ENDIAN(CMAKE_WORDS_BIGENDIAN)
+  include (FindX11)
+
+  if("${X11_X11_INCLUDE_PATH}" STREQUAL "/usr/include")
+    set (CMAKE_X_CFLAGS "" CACHE STRING "X11 extra flags.")
+  else()
+    set (CMAKE_X_CFLAGS "-I${X11_X11_INCLUDE_PATH}" CACHE STRING
+         "X11 extra flags.")
+  endif()
+  set (CMAKE_X_LIBS "${X11_LIBRARIES}" CACHE STRING
+       "Libraries and options used in X11 programs.")
+  set (CMAKE_HAS_X "${X11_FOUND}" CACHE INTERNAL "Is X11 around.")
+
+  include (FindThreads)
+
+  set (CMAKE_THREAD_LIBS        "${CMAKE_THREAD_LIBS_INIT}" CACHE STRING
+    "Thread library used.")
+
+  set (CMAKE_USE_PTHREADS       "${CMAKE_USE_PTHREADS_INIT}" CACHE BOOL
+     "Use the pthreads library.")
+
+  set (CMAKE_USE_WIN32_THREADS  "${CMAKE_USE_WIN32_THREADS_INIT}" CACHE BOOL
+       "Use the win32 thread library.")
+
+  set (CMAKE_HP_PTHREADS        ${CMAKE_HP_PTHREADS_INIT} CACHE BOOL
+     "Use HP pthreads.")
+
+  set (CMAKE_USE_SPROC          ${CMAKE_USE_SPROC_INIT} CACHE BOOL
+     "Use sproc libs.")
+
+  if(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
+    set(CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
+    set(__ERASE_CMAKE_TRY_COMPILE_OSX_ARCHITECTURES)
+  endif()
+endif()
+
+mark_as_advanced(
+CMAKE_HP_PTHREADS
+CMAKE_THREAD_LIBS
+CMAKE_USE_PTHREADS
+CMAKE_USE_SPROC
+CMAKE_USE_WIN32_THREADS
+CMAKE_X_CFLAGS
+CMAKE_X_LIBS
+)
+