Add target_compile_options setting sycl-targets for targets needing SYCL

For every CMake target, where add_sycl_to_target is used, we also run
target_compile_options(
   ${target_name}
   PRIVATE
   -fysl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
)

Author: oleksandr-pavlyk

dpctl/CMakeLists.txt

@@ -143,7 +143,13 @@ function(build_dpctl_ext _trgt _src _dest)
     add_custom_target(${_cythonize_trgt} DEPENDS ${_src})
     Python_add_library(${_trgt} MODULE WITH_SOABI ${_generated_src})
     if (BUILD_DPCTL_EXT_SYCL)
-      add_sycl_to_target(TARGET ${_trgt} SOURCES ${_generated_src})
+        add_sycl_to_target(TARGET ${_trgt} SOURCES ${_generated_src})
+        # make fat binary
+        target_compile_options(
+            ${_trgt}
+            PRIVATE
+            -fsycl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
+        )
     endif()
     target_include_directories(${_trgt} PRIVATE ${NumPy_INCLUDE_DIR} ${DPCTL_INCLUDE_DIR})
     add_dependencies(${_trgt} _build_time_create_dpctl_include_copy ${_cythonize_trgt})

dpctl/tensor/CMakeLists.txt

@@ -141,6 +141,13 @@ list(APPEND _tensor_impl_sources
 set(python_module_name _tensor_impl)
 pybind11_add_module(${python_module_name} MODULE ${_tensor_impl_sources})
 add_sycl_to_target(TARGET ${python_module_name} SOURCES ${_tensor_impl_sources})
+# make fat binary
+target_compile_options(
+    ${python_module_name}
+    PRIVATE
+    -fsycl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
+)
+
 set(_clang_prefix "")
 if (WIN32)
   set(_clang_prefix "/clang:")

dpctl/utils/CMakeLists.txt

@@ -21,6 +21,12 @@ pybind11_add_module(${python_module_name} MODULE
   ${_module_src}
 )
 add_sycl_to_target(TARGET ${python_module_name} SOURCES ${_module_src})
+# make fat binary
+target_compile_options(
+    ${python_module_name}
+    PRIVATE
+    -fsycl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
+)
 target_include_directories(${python_module_name}
     PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/../include

libsyclinterface/CMakeLists.txt

@@ -205,6 +205,12 @@ add_library(DPCTLSyclInterface
     ${helper_sources}
 )
 add_sycl_to_target(TARGET DPCTLSyclInterface SOURCES ${sources} ${helper_sources})
+# make fat binary
+target_compile_options(
+    DPCTLSyclInterface
+    PRIVATE
+    -fsycl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
+)
 
 if(DPCTL_GENERATE_COVERAGE)
     target_link_options(DPCTLSyclInterface

libsyclinterface/tests/CMakeLists.txt

@@ -52,6 +52,12 @@ add_sycl_to_target(
   ${CMAKE_CURRENT_SOURCE_DIR}/test_sycl_queue_interface.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/test_sycl_usm_interface.cpp
 )
+# make fat binary
+target_compile_options(
+    dpctl_c_api_tests
+    PRIVATE
+    -fsycl-targets=spir64-unknown-unknown,nvptx64-nvidia-cuda
+)
 
 if(DPCTL_GENERATE_COVERAGE)
     target_include_directories(dpctl_c_api_tests