Add DPCTL_OFFLOAD_COMPRESS:BOOL=OFF option to dpctl CMake script

If -DDPCTL_OFFLOAD_COMPRESS=ON is used, DPC++ link-time option
`--offload-compress` is used to compress offload sections.

The option is OFF by default.

Author: oleksandr-pavlyk

CMakeLists.txt

@@ -35,6 +35,7 @@ set(DPCTL_TARGET_HIP
     "Build DPCTL to target a HIP device architecture"
 )
 option(DPCTL_WITH_REDIST "Build DPCTL assuming DPC++ redistributable is installed into Python prefix" OFF)
+option(DPCTL_OFFLOAD_COMPRESS "Build using offload section compression feature of DPC++" OFF)
 
 find_package(IntelSYCL REQUIRED PATHS ${CMAKE_SOURCE_DIR}/cmake NO_DEFAULT_PATH)
 

dpctl/CMakeLists.txt

@@ -112,7 +112,10 @@ function(build_dpctl_ext _trgt _src _dest)
     if (BUILD_DPCTL_EXT_SYCL)
         add_sycl_to_target(TARGET ${_trgt} SOURCES ${_generated_src})
         target_compile_options(${_trgt} PRIVATE -fno-sycl-id-queries-fit-in-int)
-        target_link_options(${_trgt} PRIVATE -fsycl-device-code-split=per_kernel --offload-compress)
+	target_link_options(${_trgt} PRIVATE -fsycl-device-code-split=per_kernel)
+	if (DPCTL_OFFLOAD_COMPRESS)
+            target_link_options(${_trgt} PRIVATE --offload-compress)
+	endif()
         if(_dpctl_sycl_targets)
             # make fat binary
             target_compile_options(

dpctl/tensor/CMakeLists.txt

@@ -267,7 +267,11 @@ endforeach()
 set(_linker_options "LINKER:${DPCTL_LDFLAGS}")
 foreach(python_module_name ${_py_trgts})
     target_compile_options(${python_module_name} PRIVATE -fno-sycl-id-queries-fit-in-int)
-    target_link_options(${python_module_name} PRIVATE -fsycl-device-code-split=per_kernel --offload-compress)
+    target_link_options(${python_module_name} PRIVATE -fsycl-device-code-split=per_kernel)
+    if (DPCTL_OFFLOAD_COMPRESS)
+        target_link_options(${python_module_name} PRIVATE --offload-compress)
+    endif()
+
     target_include_directories(${python_module_name}
         PRIVATE
         ${CMAKE_CURRENT_SOURCE_DIR}/libtensor/include

dpctl/utils/CMakeLists.txt

@@ -28,7 +28,11 @@ list(APPEND _pybind11_targets ${python_module_name})
 set(_linker_options "LINKER:${DPCTL_LDFLAGS}")
 foreach(python_module_name ${_pybind11_targets})
     target_compile_options(${python_module_name} PRIVATE -fno-sycl-id-queries-fit-in-int)
-    target_link_options(${python_module_name} PRIVATE -fsycl-device-code-split=per_kernel --offload-compress)
+    target_link_options(${python_module_name} PRIVATE -fsycl-device-code-split=per_kernel)
+    if (DPCTL_OFFLOAD_COMPRESS)
+        target_link_options(${python_module_name} PRIVATE --offload-compress)
+    endif()
+
     target_include_directories(${python_module_name}
         PRIVATE
         ${CMAKE_CURRENT_SOURCE_DIR}/libtensor/include