Add sycl config to conda build

conda-recipe/bld.bat

@@ -3,6 +3,20 @@
 @REM used BUILD_PREFIX as compiler installed in build section of meta.yml
 set "PATH=%BUILD_PREFIX%\Library\bin-llvm;%PATH%"
 
+REM A workaround for activate-dpcpp.bat issue to be addressed in 2021.4
+set "LIB=%BUILD_PREFIX%\Library\lib;%BUILD_PREFIX%\compiler\lib;%LIB%"
+SET "INCLUDE=%BUILD_PREFIX%\include;%INCLUDE%"
+
+REM Since the 60.0.0 release, setuptools includes a local, vendored copy
+REM of distutils (from late copies of CPython) that is enabled by default.
+REM It breaks build for Windows, so use distutils from "stdlib" as before.
+REM @TODO: remove the setting, once transition to build backend on Windows
+REM to cmake is complete.
+SET "SETUPTOOLS_USE_DISTUTILS=stdlib"
+
+set "CC=icx"
+set "CXX=icx"
+
 set "SKBUILD_ARGS=-G Ninja --"
 set "SKBUILD_ARGS=%SKBUILD_ARGS% -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON"
 

conda-recipe/build.sh

@@ -2,6 +2,16 @@
 
 set -euxo pipefail
 
+# Intel LLVM must cooperate with compiler and sysroot from conda
+export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:${BUILD_PREFIX}/lib"
+
+echo "--gcc-toolchain=${BUILD_PREFIX} --sysroot=${BUILD_PREFIX}/${HOST}/sysroot -target ${HOST}" > icpx_for_conda.cfg
+export ICPXCFG="$(pwd)/icpx_for_conda.cfg"
+export ICXCFG="$(pwd)/icpx_for_conda.cfg"
+
+export CC=icx
+export CXX=icpx
+
 # new llvm-spirv location
 # starting from dpcpp_impl_linux-64=2022.0.0=intel_3610
 export PATH=$CONDA_PREFIX/bin-llvm:$PATH

numba_dpex/core/runtime/CMakeLists.txt

@@ -24,6 +24,10 @@ project(_dpexrt_python
     DESCRIPTION "A Python C extension for numba-dpex runtime."
 )
 
+# Help conda build find path from both host and build env.
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
+
 # Get numba include path
 if(NOT DEFINED Numba_INCLUDE_DIRS)
     execute_process(

setup.py

@@ -100,7 +100,5 @@ def to_cmake_format(version: str):
         ),
         "-DIS_INSTALL:BOOL={0:s}".format("TRUE" if is_install else "FALSE"),
         "-DIS_DEVELOP:BOOL={0:s}".format("TRUE" if is_develop else "FALSE"),
-        "-DCMAKE_C_COMPILER=icx",
-        "-DCMAKE_CXX_COMPILER=icpx",
     ],
 )