[SYCL] Generate and install stripped PDBs for SYCL libraries (#4915)

Adds stripped PDB files for SYCL library and the PI plugins when
building with MSVC. Full PDB files will also be generated, but only the
stripped variants will be installed.

The stripped PDB files will only be generated and installed if the used
linker supports the /PDBSTRIPPED options. LLD does not currently support
this option. If the stripped PDB is not generated, no PDB files are
installed for the SYCL libraries and PI plugins.

Signed-off-by: Steffen Larsen <steffen.larsen@intel.com>

sycl/CMakeLists.txt

@@ -11,6 +11,7 @@ option(SYCL_ADD_DEV_VERSION_POSTFIX "Adds -V postfix to version string" ON)
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
 include(AddSYCLExecutable)
+include(SYCLUtils)
 
 set(SYCL_MAJOR_VERSION 5)
 set(SYCL_MINOR_VERSION 4)
@@ -48,6 +49,15 @@ if(MSVC)
   # Skip asynchronous C++ exceptions catching and assume "extern C" functions
   # never throw C++ exceptions.
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc")
+
+  # Add PDB debug information
+  list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
+  include(LLVMCheckLinkerFlag)
+  llvm_check_linker_flag(CXX "/DEBUG" LINKER_SUPPORTS_DEBUG)
+  if(LINKER_SUPPORTS_DEBUG)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi")
+    add_link_options("/DEBUG")
+  endif()
 endif()
 
 # Get clang's version

sycl/cmake/modules/SYCLUtils.cmake

@@ -0,0 +1,21 @@
+list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
+include(LLVMCheckLinkerFlag)
+
+# add_stripped_pdb(TARGET_NAME)
+#
+# Will add option for generating stripped PDB file and install the generated
+# file as ${ARG_TARGET_NAME}.pdb in bin folder.
+# NOTE: LLD does not currently support /PDBSTRIPPED so the PDB file is optional.
+macro(add_stripped_pdb ARG_TARGET_NAME)
+  llvm_check_linker_flag(CXX "/PDBSTRIPPED:${ARG_TARGET_NAME}.stripped.pdb"
+                         LINKER_SUPPORTS_PDBSTRIPPED)
+  if(LINKER_SUPPORTS_PDBSTRIPPED)
+    target_link_options(${ARG_TARGET_NAME}
+                        PRIVATE "/PDBSTRIPPED:${ARG_TARGET_NAME}.stripped.pdb")
+    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${ARG_TARGET_NAME}.stripped.pdb"
+            DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
+            RENAME "${ARG_TARGET_NAME}.pdb"
+            COMPONENT ${ARG_TARGET_NAME}
+            OPTIONAL)
+  endif()
+endmacro()

sycl/plugins/cuda/CMakeLists.txt

@@ -49,6 +49,8 @@ if (MSVC)
   # by defining __SYCL_BUILD_SYCL_DLL, we can use __declspec(dllexport)
   # which are individually tagged for all pi* symbols in pi.h
   target_compile_definitions(pi_cuda PRIVATE __SYCL_BUILD_SYCL_DLL)
+  # Install stripped PDB
+  add_stripped_pdb(pi_cuda)
 else()
   # we set the visibility of all symbols 'hidden' by default.
   # In pi.h file, we set exported symbols with visibility==default individually

sycl/plugins/esimd_emulator/CMakeLists.txt

@@ -105,6 +105,8 @@ if (MSVC)
   # by defining __SYCL_BUILD_SYCL_DLL, we can use __declspec(dllexport)
   # which are individually tagged for all pi* symbols in pi.h
   target_compile_definitions(pi_esimd_emulator PRIVATE __SYCL_BUILD_SYCL_DLL)
+  # Install stripped PDB
+  add_stripped_pdb(pi_esimd_emulator)
 else()
   # we set the visibility of all symbols 'hidden' by default.
   # In pi.h file, we set exported symbols with visibility==default individually

sycl/plugins/level_zero/CMakeLists.txt

@@ -114,6 +114,8 @@ if (MSVC)
   # by defining __SYCL_BUILD_SYCL_DLL, we can use __declspec(dllexport)
   # which are individually tagged for all pi* symbols in pi.h
   target_compile_definitions(pi_level_zero PRIVATE __SYCL_BUILD_SYCL_DLL)
+  # Install stripped PDB
+  add_stripped_pdb(pi_level_zero)
 else()
   # we set the visibility of all symbols 'hidden' by default.
   # In pi.h file, we set exported symbols with visibility==default individually

sycl/plugins/opencl/CMakeLists.txt

@@ -32,6 +32,8 @@ if (MSVC)
   # by defining __SYCL_BUILD_SYCL_DLL, we can use __declspec(dllexport)
   # which are individually tagged for all pi* symbols in pi.h
   target_compile_definitions(pi_opencl PRIVATE __SYCL_BUILD_SYCL_DLL)
+  # Install stripped PDB
+  add_stripped_pdb(pi_opencl)
 else()
   # we set the visibility of all symbols 'hidden' by default.
   # In pi.h file, we set exported symbols with visibility==default individually

sycl/source/CMakeLists.txt

@@ -48,6 +48,8 @@ function(add_sycl_rt_library LIB_NAME)
   if (MSVC)
     target_compile_definitions(${LIB_OBJ_NAME} PRIVATE __SYCL_BUILD_SYCL_DLL )
     target_link_libraries(${LIB_NAME} PRIVATE shlwapi)
+    # Install stripped PDB
+    add_stripped_pdb(${LIB_NAME})
   else()
     target_compile_options(${LIB_OBJ_NAME} PUBLIC
                            -fvisibility=hidden -fvisibility-inlines-hidden)