Configuring protobuf C++ to dynamically link against MSVC runtime library - c++

Question

I would like to configure protobuf to link MSVC runtime library dynamically. While this is supported by protobuf and seems trivial to do, I have not been able to do that.
Here's my CMake command (through bat file, execute from protobuf's source code root directory)
setlocal
#call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvars64.bat"
cd cmake
mkdir build & cd build
cmake -G "Visual Studio 16 2019" -DCMAKE_INSTALL_PREFIX=../../install -Dprotobuf_BUILD_SHARED_LIBS=OFF -Dprotobuf_MSVC_STATIC_RUNTIME=OFF -Dprotobuf_BUILD_TESTS=OFF ..
if %ERRORLEVEL% NEQ 0 EXIT /B 1
cmake --build . --config Release
if %ERRORLEVEL% NEQ 0 EXIT /B 1
cmake --install .
if %ERRORLEVEL% NEQ 0 EXIT /B 1
cd ../..
mkdir dist
tar -C install -czf dist/protobuf.tar.gz .
if %ERRORLEVEL% NEQ 0 EXIT /B 1
However, whenever I checked with dumpbin, this is what I got:
dumpbin /nologo /directives libprotobuf.lib
Dump of file libprotobuf.lib
File Type: LIBRARY
Linker Directives
-----------------
/FAILIFMISMATCH:_CRT_STDIO_ISO_WIDE_SPECIFIERS=0
/FAILIFMISMATCH:_MSC_VER=1900
/FAILIFMISMATCH:_ITERATOR_DEBUG_LEVEL=0
/FAILIFMISMATCH:RuntimeLibrary=MT_StaticRelease
/DEFAULTLIB:libcpmt
/DEFAULTLIB:LIBCMT
/DEFAULTLIB:OLDNAMES
Based on /FAILIFMISMATCH:RuntimeLibrary=MT_StaticRelease , I assume this is still linking statically against MSVC? If yes, how should I configure my CMake command in order to achieve what I want?

Answer 1

To linkt MSVC runtime dynamically, you are looking for protobuf_MSVC_STATIC_RUNTIME=OFF
Building ProtoBuf this way fixes errors like libprotobuf.lib(common.obj) : error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MT_StaticRelease' doesn't match value 'MD_DynamicRelease' for default CMake settings in Visual Studio.