cmake doesn't work with Mac OS X

[wangkuiyi]

After installing dependencies as described here, the running of cmake prints the following erros:

yi@WangYis-iMac:~/work/paddle/build (fix_mac_build_doc)$ cmake  .. -DWITH_GPU=OFF -DWITH_DOC=OFF
CMake Warning at /usr/local/Cellar/cmake/3.4.3/share/cmake/Modules/Platform/Darwin-Initialize.cmake:97 (message):
  CMAKE_OSX_DEPLOYMENT_TARGET is '10.10' but the matching SDK does not exist
  at:

   "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk"

  Instead using SDK:

   "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk".
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/3.4.3/share/cmake/Modules/CMakeSystemSpecificInitialize.cmake:18 (include)
  CMakeLists.txt:3 (project)


CMake Error at /usr/local/Cellar/cmake/3.4.3/share/cmake/Modules/Platform/Darwin.cmake:76 (message):
  CMAKE_OSX_DEPLOYMENT_TARGET is '10.10' but CMAKE_OSX_SYSROOT:

   ""

  is not set to a MacOSX SDK with a recognized version.  Either set
  CMAKE_OSX_SYSROOT to a valid SDK or set CMAKE_OSX_DEPLOYMENT_TARGET to
  empty.
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/3.4.3/share/cmake/Modules/CMakeSystemSpecificInformation.cmake:36 (include)
  CMakeLists.txt:3 (project)


-- Configuring incomplete, errors occurred!
See also "/Users/yi/work/paddle/build/CMakeFiles/CMakeOutput.log".

[wangkuiyi]

I noticed that @gangliao submitted this PR to add Mac OS X port of Paddle. Could @gangliao please help with this issue? Thanks!

[gangliao]

@wangkuiyi

Homebrew/legacy-homebrew#46362
It seems like your Mac OS X is 10.10 and the Xcode is 7.x (10.11 SDK).
Maybe you can additionally pass CMAKE_OSX_SYSROOTto your CMake commands:

cmake .. -DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -DWITH_GPU=OFF

[wangkuiyi]

@gangliao

Awesome! That works! Thank you!