Add OpenCL SDK and clMath ports (#2837)

* initial clFFT porting

* OpenCL SDK half baked

* Tried fixing Debug/Release

* Remove DLL deployment

* OpenCL SDK installs

* clFFT installs

* clFFT properly depends on OpenCL

* OpenCL SDK fixes and clFFT patches

* [clfft][opencl] Simplification, use patches instead of full files.

ports/clfft/CONTROL

@@ -0,0 +1,4 @@
+Source: clfft
+Version: 2.12.2
+Build-Depends: opencl
+Description: clFFT is an OpenCL 1.2 accelerated Fast Fourier Transform library.

ports/clfft/portfile.cmake

@@ -0,0 +1,37 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO clMathLibraries/clFFT
+    REF v2.12.2
+    SHA512 19e9a4e06f76ae7c7808d1188677d5553c43598886a75328b7801ab2ca68e35206839a58fe2f958a44a6f7c83284dc9461cd0e21c37d1042bf82e24aad066be8
+    HEAD_REF master
+)
+
+vcpkg_apply_patches(
+    SOURCE_PATH ${SOURCE_PATH}
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/tweak-install.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}/src
+    PREFER_NINJA
+    OPTIONS
+        -DBUILD_LOADLIBRARIES=OFF
+        -DBUILD_EXAMPLES=OFF
+        -DSUFFIX_LIB=
+)
+
+vcpkg_install_cmake()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+file(INSTALL
+        "${SOURCE_PATH}/LICENSE"
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/share/clfft/copyright
+)
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH "CMake")
+
+vcpkg_copy_pdbs()

ports/clfft/tweak-install.patch

@@ -0,0 +1,28 @@
+diff --git a/src/clFFTConfig.cmake.in b/src/clFFTConfig.cmake.in
+index 5b58c35..ee749a2 100644
+--- a/src/clFFTConfig.cmake.in
++++ b/src/clFFTConfig.cmake.in
+@@ -1,3 +1,3 @@
+ include(${CMAKE_CURRENT_LIST_DIR}/clFFTTargets.cmake)
+-get_filename_component(CLFFT_INCLUDE_DIRS ${CMAKE_CURRENT_LIST_DIR}/@reldir@/include ABSOLUTE)
++get_filename_component(CLFFT_INCLUDE_DIRS ${CMAKE_CURRENT_LIST_DIR}/@reldir@/../include ABSOLUTE)
+ set(CLFFT_LIBRARIES clFFT)
+diff --git a/src/library/CMakeLists.txt b/src/library/CMakeLists.txt
+index 132ef86..12ba905 100644
+--- a/src/library/CMakeLists.txt
++++ b/src/library/CMakeLists.txt
+@@ -90,6 +90,7 @@ target_link_libraries( clFFT ${OPENCL_LIBRARIES} ${CMAKE_DL_LIBS} )
+ set_target_properties( clFFT PROPERTIES VERSION ${CLFFT_VERSION} )
+ set_target_properties( clFFT PROPERTIES SOVERSION ${CLFFT_SOVERSION} )
+ set_target_properties( clFFT PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/staging" )
++set_target_properties( clFFT PROPERTIES INTERFACE_INCLUDE_DIRECTORIES $<INSTALL_INTERFACE:include> )
+ 
+ if( CMAKE_COMPILER_IS_GNUCC )
+     configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/clFFT.pc.in
+@@ -104,5 +105,5 @@ install( TARGETS clFFT
+         EXPORT Library
+         RUNTIME DESTINATION bin${SUFFIX_BIN}
+         LIBRARY DESTINATION lib${SUFFIX_LIB}
+-        ARCHIVE DESTINATION lib${SUFFIX_LIB}/import
++        ARCHIVE DESTINATION lib${SUFFIX_LIB}
+         )

ports/opencl/CONTROL

@@ -0,0 +1,3 @@
+Source: opencl
+Version: 2.2 (2017.07.18)
+Description: C/C++ headers and ICD loader (Installable Client Driver) for OpenCL

ports/opencl/portfile.cmake

@@ -0,0 +1,90 @@
+include(vcpkg_common_functions)
+
+# OpenCL C headers
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO KhronosGroup/OpenCL-Headers
+    REF f039db6764d52388658ef15c30b2237bbda49803
+    SHA512 5909a85f96477d731059528303435f06255e98ed8df9d4cd2b62c744b5fe41408c69c0d4068421a2813eb9ad9d70d7f1bace9ebf0db19cc09e71bb8066127c5f
+    HEAD_REF master
+)
+
+file(INSTALL
+        "${SOURCE_PATH}/opencl22/CL"
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/include
+)
+
+# OpenCL C++ headers
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO KhronosGroup/OpenCL-CLHPP
+    REF 5dd8bb9e32a8e2f72621566b296ac8143a554270
+    SHA512 2909fe2b979b52724ef8d285180d8bfd30bdd56cb79da4effc9e03b576ec7edb5497c99a9fa30541fe63037c84ddef21d4a73e7927f3813baab2a2afeecd55ab
+    HEAD_REF master
+)
+
+vcpkg_find_acquire_program(PYTHON3)
+
+vcpkg_execute_required_process(
+    COMMAND "${PYTHON3}" "${SOURCE_PATH}/gen_cl_hpp.py"
+        -i ${SOURCE_PATH}/input_cl.hpp
+        -o ${CURRENT_PACKAGES_DIR}/include/CL/cl.hpp
+    WORKING_DIRECTORY ${SOURCE_PATH}
+    LOGNAME generate_clhpp-${TARGET_TRIPLET}
+)
+
+vcpkg_execute_required_process(
+    COMMAND "${PYTHON3}" "${SOURCE_PATH}/gen_cl_hpp.py"
+        -i ${SOURCE_PATH}/input_cl2.hpp
+        -o ${CURRENT_PACKAGES_DIR}/include/CL/cl2.hpp
+    WORKING_DIRECTORY ${SOURCE_PATH}
+    LOGNAME generate_cl2hpp-${TARGET_TRIPLET}
+)
+message(STATUS "Generating OpenCL C++ headers done")
+
+# OpenCL ICD loader
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO KhronosGroup/OpenCL-ICD-Loader
+    REF 26a38983cbe5824fd5be03eab8d037758fc44360
+    SHA512 3029f758ff0c39b57aa10d881af68e73532fd179c54063ed1d4529b7d6e27a5219e3c24b7fb5598d790ebcdc2441e00001a963671dc90fef2fc377c76d724f54
+    HEAD_REF master
+)
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
+    message(STATUS "Building the ICD loader as a static library is not supported. Building as DLLs instead.")
+    set(VCPKG_LIBRARY_LINKAGE "dynamic")
+endif()
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS
+        -DOPENCL_INCLUDE_DIRS=${CURRENT_PACKAGES_DIR}/include
+)
+
+vcpkg_build_cmake(TARGET OpenCL)
+
+file(INSTALL
+        "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel/OpenCL.lib"
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/lib
+)
+
+file(INSTALL
+        "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg/OpenCL.lib"
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/debug/lib
+)
+
+file(INSTALL
+        "${SOURCE_PATH}/LICENSE.txt"
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright
+)
+file(COPY
+        ${CMAKE_CURRENT_LIST_DIR}/usage
+    DESTINATION
+        ${CURRENT_PACKAGES_DIR}/share/${PORT}
+)

ports/opencl/usage

@@ -0,0 +1,7 @@
+The package opencl is compatible with built-in CMake targets:
+
+    find_package(OpenCL REQUIRED)
+    target_link_libraries(main PRIVATE ${OpenCL_LIBRARIES})
+    target_include_directories(main PRIVATE ${OpenCL_INCLUDE_DIRS})
+
+You will also need to install an appropriate driver package from your CPU/GPU manufacturer.