title: Error installing pyjnius, "jni.h" not found. (OS X 10.10.1)
body: <p>I have been trying to install pyjnius on OS X 10.10.1. Other dependencies taken care of, I haven't been able to solve the issue of the header file "jni.h" not being found. Here's what happens:</p>
  
  <pre><code>$ sudo python setup.py install
  /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
    warnings.warn(msg)
  running install
  running build
  running build_py
  running build_ext
  skipping 'jnius/jnius.c' Cython extension (up-to-date)
  building 'jnius' extension
  cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/System/Library/Frameworks/JavaVM.framework/Versions/A/Headers -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c jnius/jnius.c -o build/temp.macosx-10.10-intel-2.7/jnius/jnius.o
  jnius/jnius.c:238:10: fatal error: 'jni.h' file not found
  #include "jni.h"
           ^
  1 error generated.
  error: command 'cc' failed with exit status 1
  </code></pre>
  
  <p>[If it makes any difference, I have tried using pip, but it terminates with the same error.]</p>
  
  <p>The Java versions installed are 1.6.0.65 and 1.8.0.25. I can switch between them if required.</p>
  
  <p>If it helps, I was able to find <code>jni.h</code> using <code>locate</code>. It's located here:</p>
  
  <pre><code>/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/jni.h
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/jni.h
  /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/include/jni.h
  </code></pre>
  
  <p>Any help will be appreciated! </p>