(Windows/MinGW) Undefined reference to jsonrpc::Client::CallMethod(...)

[LEOcab]

I can't get libjson-rpc-cpp to build in MinGW using the 32-bit toolchain and the pre-built Windows binaries. This is the current error I'm getting; long story short it's an undefined reference to jsonrpc::Client::CallMethod(...):

cmd.exe /C "cd . && C:\msys64\mingw32\bin\c++.exe -g  CMakeFiles/rpctest2.dir/main.cpp.obj -o rpctest2.exe -Wl,--out-implib,librpctest2.dll.a -Wl,--major-image-version,0,--minor-image-version,0 -LC:/PROGRA~2/LIBJSO~1.0/lib   -LC:/msys64/home/user/jsoncpp/build/debug/lib -llibjsoncpp  -llibjsonrpccpp-client  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && cd ."
C:/msys64/mingw32/bin/../lib/gcc/i686-w64-mingw32/13.2.0/../../../../i686-w64-mingw32/bin/ld.exe: CMakeFiles/rpctest2.dir/main.cpp.obj: in function `main':
C:/Users/user/CLionProjects/rpctest2/main.cpp:16:(.text+0x4d): undefined reference to `jsonrpc::HttpClient::HttpClient(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
C:/msys64/mingw32/bin/../lib/gcc/i686-w64-mingw32/13.2.0/../../../../i686-w64-mingw32/bin/ld.exe: C:/Users/user/CLionProjects/rpctest2/main.cpp:23:(.text+0xdf): undefined reference to `jsonrpc::Client::CallMethod(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Json::Value const&)'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

This may or may not be the same issue as #327, but I'm starting a different issue since we're on different platforms and the undefined method is different.