xcode version: 4.6.3  on  os x 10.8.3

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk


owner1s-Mac:~ owner1$ cd bf019
owner1s-Mac:bf019 owner1$ mkdir cmakefiles
owner1s-Mac:bf019 owner1$ cd cmakefiles/
owner1s-Mac:cmakefiles owner1$ cmake ..
CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER
CMake Error: Could not find cmake module file: /Users/owner1/bf019/cmakefiles/CMakeFiles/3.0.2/CMakeCCompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER
CMake Error: Could not find cmake module file: /Users/owner1/bf019/cmakefiles/CMakeFiles/3.0.2/CMakeCXXCompiler.cmake
CMake Error at CMakeLists.txt:1 (project):
  No CMAKE_C_COMPILER could be found.

  Tell CMake where to find the compiler by setting the CMake cache entry
  CMAKE_C_COMPILER to the full path to the compiler, or to the compiler name
  if it is in the PATH.


CMake Error at CMakeLists.txt:1 (project):
  No CMAKE_CXX_COMPILER could be found.

  Tell CMake where to find the compiler by setting the CMake cache entry
  CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler
  name if it is in the PATH.


CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
owner1s-Mac:cmakefiles owner1$ gcc --version
-bash: gcc: command not found
owner1s-Mac:cmakefiles owner1$ rm -r *
owner1s-Mac:cmakefiles owner1$ cmake .. -G "Xcode"
-- The C compiler identification is AppleClang 4.2.0.4250028
-- The CXX compiler identification is AppleClang 4.2.0.4250028
-- Check for working C compiler using: Xcode
-- Check for working C compiler using: Xcode -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Xcode
-- Check for working CXX compiler using: Xcode -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- MACOSX_DEPLOYMENT_TARGET: 
CMake Error at cmake/Platform/Apple.cmake:15 (message):
  MACOSX_DEPLOYMENT_TARGET environment variable not set.  Set this like so:
  'export MACOSX_DEPLOYMENT_TARGET=10.6'
Call Stack (most recent call first):
  CMakeLists.txt:24 (include)


-- Configuring incomplete, errors occurred!
See also "/Users/owner1/bf019/cmakefiles/CMakeFiles/CMakeOutput.log".
owner1s-Mac:cmakefiles owner1$ export MACOSX_DEPLOYMENT_TARGET=10.7
owner1s-Mac:cmakefiles owner1$ cmake .. -G "Xcode"
-- MACOSX_DEPLOYMENT_TARGET: 10.7
-- Compiling for OSX architectures: x86_64
-- Found Sparkle: /Users/owner1/bf019/lib/Sparkle.framework  
-- Found SDL2: /Users/owner1/bf019/lib/SDL2.framework;-framework Cocoa  
-- Determining system GL provider
-- Atempting to use standard OpenGL
-- Found OpenGL: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/OpenGL.framework  
-- Looking for include file pthread.h
CMake Warning at /Applications/CMake.app/Contents/share/cmake-3.0/Modules/Platform/Darwin.cmake:179 (message):
  Ignoring CMAKE_OSX_SYSROOT value:

   /Developer/SDKs/MacOSX10.7.sdk

  because the directory does not exist.
Call Stack (most recent call first):
  /Applications/CMake.app/Contents/share/cmake-3.0/Modules/CMakeSystemSpecificInformation.cmake:36 (include)
  CMakeLists.txt:3 (project)


-- Looking for include file pthread.h - not found
CMake Error at /Applications/CMake.app/Contents/share/cmake-3.0/Modules/FindPackageHandleStandardArgs.cmake:136 (message):
  Could NOT find Threads (missing: Threads_FOUND)
Call Stack (most recent call first):
  /Applications/CMake.app/Contents/share/cmake-3.0/Modules/FindPackageHandleStandardArgs.cmake:343 (_FPHSA_FAILURE_MESSAGE)
  /Applications/CMake.app/Contents/share/cmake-3.0/Modules/FindThreads.cmake:178 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:87 (find_package)