Build Windows SYCL kernel directly with acpp

Author: allnes

app/SYCL/CMakeLists.txt

@@ -5,11 +5,37 @@ add_executable(SYCL_Example
 )
 target_link_libraries(SYCL_Example PRIVATE layers_lib AdaptiveCpp::acpp-rt)
 
-add_library(SYCL_Example_kernel OBJECT sycl_kernel.cpp)
-add_sycl_to_target(TARGET SYCL_Example_kernel SOURCES
-    sycl_kernel.cpp
-)
-target_sources(SYCL_Example PRIVATE $<TARGET_OBJECTS:SYCL_Example_kernel>)
+if(WIN32)
+    set(SYCL_EXAMPLE_KERNEL_OBJECT "${CMAKE_CURRENT_BINARY_DIR}/sycl_kernel.cpp.obj")
+    set(_sycl_kernel_command python "${ACPP_COMPILER}")
+    if(ACPP_TARGETS)
+        list(APPEND _sycl_kernel_command "--acpp-targets=${ACPP_TARGETS}")
+    endif()
+    list(APPEND _sycl_kernel_command
+        -std=c++20
+        -c "${CMAKE_CURRENT_SOURCE_DIR}/sycl_kernel.cpp"
+        -o "${SYCL_EXAMPLE_KERNEL_OBJECT}"
+    )
+    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        list(APPEND _sycl_kernel_command -g)
+    else()
+        list(APPEND _sycl_kernel_command -O2)
+    endif()
+
+    add_custom_command(
+        OUTPUT "${SYCL_EXAMPLE_KERNEL_OBJECT}"
+        COMMAND ${_sycl_kernel_command}
+        DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/sycl_kernel.cpp"
+        VERBATIM
+    )
+    target_sources(SYCL_Example PRIVATE "${SYCL_EXAMPLE_KERNEL_OBJECT}")
+else()
+    add_library(SYCL_Example_kernel OBJECT sycl_kernel.cpp)
+    add_sycl_to_target(TARGET SYCL_Example_kernel SOURCES
+        sycl_kernel.cpp
+    )
+    target_sources(SYCL_Example PRIVATE $<TARGET_OBJECTS:SYCL_Example_kernel>)
+endif()
 
 add_test(NAME SYCL.Example COMMAND SYCL_Example)
 set_tests_properties(SYCL.Example PROPERTIES