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win32: cmake: adds LWS_MSVC_STATIC_RUNTIME option

Browse source 
https://github.com/warmcat/libwebsockets/pull/3354
This commit is contained in:
Glen Mabey 2025-03-26 11:04:55 -07:00 • committed by Andy Green
parent 1007814f8c
commit 99516ea5d2
1 changed files with 32 additions and 0 deletions
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32
CMakeLists.txt
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@ -51,6 +51,10 @@ if (POLICY CMP0075)
cmake_policy(SET CMP0075 NEW)
endif()
if(POLICY CMP0091)
cmake_policy(SET CMP0091 NEW)
endif()
# General Advice
#
# For selecting between DEBUG / RELEASE, use -DCMAKE_BUILD_TYPE=DEBUG or =RELEASE
@ -387,6 +391,9 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
set(LWS_SUPPRESS_DEPRECATED_API_WARNINGS 1)
endif()
if (MSVC)
option(LWS_MSVC_STATIC_RUNTIME "Link to static MSVC runtime" OFF)
endif()
#
# to use miniz, enable both LWS_WITH_ZLIB and LWS_WITH_MINIZ
@ -945,6 +952,31 @@ if (MSVC)
else()
add_compile_options(/experimental:preprocessor /wd5105)
endif()
if (LWS_MSVC_STATIC_RUNTIME AND NOT LWS_WITH_STATIC)
message(FATAL_ERROR "Incompatible options: when LWS_MSVC_STATIC_RUNTIME=ON, must also set LWS_WITH_STATIC=ON")
endif()
if (LWS_MSVC_STATIC_RUNTIME)
if (LWS_WITH_SHARED)
message(FATAL_ERROR "Incompatible options: when LWS_MSVC_STATIC_RUNTIME=ON, must also set LWS_WITH_SHARED=OFF")
endif()
if (${CMAKE_VERSION} VERSION_GREATER 3.15 OR ${CMAKE_VERSION} VERSION_EQUAL 3.15)
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>)
else()
# Link the runtime library statically so that MSVCR*.DLL is not required at runtime.
# https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
# This is achieved by replacing msvc option /MD with /MT and /MDd with /MTd
# http://www.cmake.org/Wiki/CMake_FAQ#How_can_I_build_my_MSVC_application_with_a_static_runtime.3F
foreach (flag_var
CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif()
endforeach()
endif()
else()
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded$<$<CONFIG:Debug>:Debug>DLL)
endif()
endif(MSVC)
if (MINGW)