Adding OpenCL to OCCT prerequisites

Dear dbp,

could you please add CSF_OpenCLDir variable to the branch CR24153 in the same way as it done for shaders?

Dear kgv,

the OpenCL resource directory (CSF_OpenCLDir) was added to WOK scripts.

But, to support OpenCL programs, the WOK GUI must also be modified (to add include, lib and bin directories of the specific OpenCL implementation).

Dear kgv,

the WOK scripts were modified to support OpenCL. WOK was tested under Windows to generate VS projects using CMake. Please review.

Dear dbp,

please remove CSF_OpenCLDir, as discussed before.

>> WOK was tested under Windows to generate VS projects using CMake
I don't see any changes in CMake scripts.

Dear kgv,

WOK scripts were cleared from CSF_OpenCLDir.

Dear Commenter 1,

please verify that changes in WOK branch are sufficient for building OCCT (#0024130) with OpenCL dependency on all supported platforms.

Ivan,

1. I tried to build CR24130 by cmake on Windows. But it seems root CMakeLists.txt
was not updated for OpenCL.

2. Building by Makefiles on Linux :
SDK are available in /dn29/PRODUCTS/maintenance/unix_6.6.1/OpenCL
Output:
checking tbb/tbb.h usability... yes
checking tbb/tbb.h presence... yes
checking for tbb/tbb.h... yes
checking CL/cl.h usability... yes
checking CL/cl.h presence... yes
checking for CL/cl.h... yes
checking for TBB_runtime_interface_version in -ltbb... yes
checking for OPENCL_runtime_interface_version in -lopencl... no
configure: "Specify --with-opencl-library to enable OpenCL support"

config.log :
configure:18190: checking for OPENCL_runtime_interface_version in -lopencl
configure:18215: g++ -o conftest -DCSFDB -DOCC_CONVERT_SIGNALS -DLIN -DLININTEL -D_GNU_SOURCE=1 -mmmx -msse -msse2 -mfpmath=sse -Wall -I/dn29/PRODUCTS/maintenance/unix_6.6.1/OpenCL/AMD-APP-SDK-v2.8.1.0-RC-lnx64/include/CL -I/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/tbb-30_018oss/include -I/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/freeimage-3.15.4/include -I/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/gl2ps-1.3.8/include -D_OCC64 -L/dn29/PRODUCTS/maintenance/unix_6.6.1/OpenCL/AMD-APP-SDK-v2.8.1.0-RC-lnx64/lib/x86_64 -L/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/tbb-30_018oss/lib/intel64/cc4.1.0_libc2.4_kernel2.6.16.21 -L/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/freeimage-3.15.4/lib -L/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/gl2ps-1.3.8/lib -lstdc++ -lrt conftest.cpp -lopencl -ltbb -lXt -lX11 -lGLU -lGL -L/dn29/PRODUCTS/maintenance/unix_6.6.1/Debian60-64/freetype-2.4.11/lib -lfreetype -ldl -lpthread >&5
/tmp/ccmoJHzX.o: In function `main':
conftest.cpp:(.text+0x5): undefined reference to `OPENCL_runtime_interface_version'
collect2: ld returned 1 exit status
configure:18215: $? = 1