Use APP SDK for OpenCL

devtools/packaging/scripts/windows/build.bat

@@ -2,7 +2,10 @@ mkdir build
 cd build
 
 set FFTW=C:\Miniconda3\pkgs\fftw3f-3.3.4-vc14_2\Library
-"C:\Program Files\CMake\bin\cmake.exe" .. -G "NMake Makefiles JOM" -DCMAKE_BUILD_TYPE=Release -DOPENMM_GENERATE_API_DOCS=ON -DFFTW_INCLUDES="%FFTW%/include" -DFFTW_LIBRARY="%FFTW%/lib/libfftw3f-3.lib"
+set APPSDK=C:\Program Files (x86)\AMD APP SDK\2.9-1
+"C:\Program Files\CMake\bin\cmake.exe" .. -G "NMake Makefiles JOM" -DCMAKE_BUILD_TYPE=Release -DOPENMM_GENERATE_API_DOCS=ON ^
+    -DOPENCL_INCLUDE_DIR="%APPSDK%\include" -DOPENCL_LIBRARY="%APPSDK%\lib\x86_64\OpenCL.lib" ^
+    -DFFTW_INCLUDES="%FFTW%/include" -DFFTW_LIBRARY="%FFTW%/lib/libfftw3f-3.lib"
 
 jom
 jom PythonInstall

devtools/packaging/scripts/windows/prepare.ps1

@@ -9,6 +9,11 @@ choco install -y doxygen.portable swig cmake doxygen.install vcbuildtools git jo
 wget https://developer.nvidia.com/compute/cuda/8.0/prod/network_installers/cuda_8.0.44_win10_network-exe -UseBasicParsing -OutFile cuda_8.0.44_win10_network.exe
 .\cuda_8.0.44_win10_network.exe -s compiler_8.0 cudart_8.0 cufft_8.0 cufft_dev_8.0 nvrtc_8.0 nvrtc_dev_8.0 | Out-Null
 
+# Install AMD APP SDK.
+
+wget https://s3.amazonaws.com/omnia-ci/AMD-APP-SDK-v2.9-1.599.381-GA-Full-windows-64.exe -UseBasicParsing -OutFile AMD-APP-SDK-v2.9-1.599.381-GA-Full-windows-64.exe
+.\AMD-APP-SDK-v2.9-1.599.381-GA-Full-windows-64.exe /S /v/qn | Out-Null
+
 # Install Miniconda.
 
 wget https://repo.continuum.io/miniconda/Miniconda3-latest-Windows-x86_64.exe -UseBasicParsing -OutFile Miniconda3-latest-Windows-x86_64.exe