1 files changed, 100 insertions, 0 deletions
diff --git a/Modules/CMakeBackwardCompatibilityC.cmake b/Modules/CMakeBackwardCompatibilityC.cmake
new file mode 100644
index 000000000..00e568830
--- /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(CMAKE_GENERATOR MATCHES "Visual Studio 7")
+IF(CMAKE_GENERATOR MATCHES "Visual Studio 6")
+  INCLUDE(CMakeVS6BackwardCompatibility)
+  SET(CMAKE_SKIP_COMPATIBILITY_TESTS 1)
+ENDIF(CMAKE_GENERATOR MATCHES "Visual Studio 6")
+
+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}" MATCHES "^/usr/include$")
+    SET (CMAKE_X_CFLAGS "" CACHE STRING "X11 extra flags.")
+  ELSE("${X11_X11_INCLUDE_PATH}" MATCHES "^/usr/include$")
+    SET (CMAKE_X_CFLAGS "-I${X11_X11_INCLUDE_PATH}" CACHE STRING
+         "X11 extra flags.")
+  ENDIF("${X11_X11_INCLUDE_PATH}" MATCHES "^/usr/include$")
+  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(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
+
+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
+)
+