DarthAffe/stable-diffusion.cpp
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fix: limit default MSVC compilation parallelism

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leejet committed 2026-11-09 22:33:43 +08:00
1 parent 008b9a20ca
commit 991f825583
2 files changed
+36 -2
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CMakeLists.txt
+17 -2
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@@ -9,13 +9,28 @@ if (NOT XCODE AND NOT MSVC AND NOT CMAKE_BUILD_TYPE)
endif()
if (MSVC)
cmake_host_system_information(RESULT SD_LOGICAL_CORES QUERY NUMBER_OF_LOGICAL_CORES)
if (SD_LOGICAL_CORES GREATER 8)
math(EXPR SD_DEFAULT_MSVC_MP_COUNT "${SD_LOGICAL_CORES} - 2")
elseif (SD_LOGICAL_CORES GREATER 2)
math(EXPR SD_DEFAULT_MSVC_MP_COUNT "${SD_LOGICAL_CORES} - 1")
else()
set(SD_DEFAULT_MSVC_MP_COUNT "${SD_LOGICAL_CORES}")
endif()
if (NOT SD_DEFAULT_MSVC_MP_COUNT GREATER 0)
set(SD_DEFAULT_MSVC_MP_COUNT 1)
endif()
set(SD_MSVC_MP_COUNT "${SD_DEFAULT_MSVC_MP_COUNT}" CACHE STRING "Maximum parallel MSVC compilations per project")
if (NOT SD_MSVC_MP_COUNT MATCHES "^[1-9][0-9]*$" OR SD_MSVC_MP_COUNT GREATER 65536)
message(FATAL_ERROR "SD_MSVC_MP_COUNT must be an integer between 1 and 65536")
endif()
add_compile_definitions(_CRT_SECURE_NO_WARNINGS)
add_compile_definitions(_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING)
# /MP is MSVC-only: icx rejects it outright once offloading is enabled.
add_compile_options(
$<$<AND:$<COMPILE_LANGUAGE:C>,$<C_COMPILER_ID:MSVC>>:/MP>
$<$<AND:$<COMPILE_LANGUAGE:C>,$<C_COMPILER_ID:MSVC>>:/MP${SD_MSVC_MP_COUNT}>
$<$<COMPILE_LANGUAGE:C>:/utf-8>
$<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:MSVC>>:/MP>
$<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:MSVC>>:/MP${SD_MSVC_MP_COUNT}>
$<$<COMPILE_LANGUAGE:CXX>:/utf-8>
)
endif()