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IntelLLVM: Set linker to compiler driver for Windows

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For IntelLLVM, linking with the compiler driver is preferred over using
the linker directly.  This is especially true when doing offload to a
target accelerator, which can produce object files that the regular
linker will not handle properly.

Windows-IntelLLVM relies on Windows-MSVC.cmake for many definitions.
This commit does not change that, but does override the MSVC defaults
for linking executables, shared libraries, and static libraries so that
CMake will use the compiler driver instead of the linker.

Signed-off-by: William R. Dieter <william.r.dieter@intel.com>
This commit is contained in:
William R. Dieter
2021-10-19 15:30:00 -07:00
committed by Brad King
parent 50cfe54402
commit 79921fb00c
1 changed files with 13 additions and 0 deletions
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13
Modules/Platform/Windows-IntelLLVM.cmake
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@@ -12,6 +12,19 @@ include(Platform/Windows-MSVC)
macro(__windows_compiler_intel lang)
__windows_compiler_msvc(${lang})
# For DPCPP other offload cases, some link flags need to go to the compiler
# driver and others need to go to the linker. Pass the compiler linking flags
# in CMAKE_${lang}_LINK_FLAGS and linker flags in LINK_FLAGS
set(CMAKE_${lang}_LINK_EXECUTABLE
"${_CMAKE_VS_LINK_EXE}<CMAKE_${lang}_COMPILER> ${CMAKE_CL_NOLOGO} <CMAKE_${lang}_LINK_FLAGS> <OBJECTS> ${CMAKE_START_TEMP_FILE} /link /out:<TARGET> /implib:<TARGET_IMPLIB> /pdb:<TARGET_PDB> /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR>${_PLATFORM_LINK_FLAGS} <LINK_FLAGS> <LINK_LIBRARIES>${CMAKE_END_TEMP_FILE}")
set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
"${_CMAKE_VS_LINK_DLL}<CMAKE_${lang}_COMPILER> ${CMAKE_CL_NOLOGO} <CMAKE_${lang}_LINK_FLAGS> <OBJECTS> ${CMAKE_START_TEMP_FILE} -LD -link /out:<TARGET> /implib:<TARGET_IMPLIB> /pdb:<TARGET_PDB> /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR>${_PLATFORM_LINK_FLAGS} <LINK_FLAGS> <LINK_LIBRARIES> ${CMAKE_END_TEMP_FILE}")
if (NOT "${lang}" STREQUAL "Fortran" OR CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 2022.1)
# The Fortran driver does not support -fuse-ld=llvm-lib before compiler version 2022.1
set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
"<CMAKE_${lang}_COMPILER> ${CMAKE_CL_NOLOGO} <CMAKE_${lang}_LINK_FLAGS> <OBJECTS> ${CMAKE_START_TEMP_FILE} -fuse-ld=llvm-lib -o <TARGET> -link <LINK_FLAGS> <LINK_LIBRARIES> ${CMAKE_END_TEMP_FILE}")
endif()
set(CMAKE_DEPFILE_FLAGS_${lang} "-QMMD -QMT <DEP_TARGET> -QMF <DEP_FILE>")
set(CMAKE_${lang}_DEPFILE_FORMAT gcc)
endmacro()