Linking LanguageClient with MinGW fails

ld.exe: client.o:client.cpp:(.text+0x12af2): undefined reference to `__imp__ZN22LanguageServerProtocol29WorkDoneProgressCreateRequest10metho
dNameE'
ld.exe: client.o:client.cpp:(.text+0x12bec): undefined reference to `__imp__ZN22LanguageServerProtocol20ProgressNotification10methodNameE'
ld.exe: languageclientmanager.o:languageclientmanager.cpp:(.text+0x45f6): undefined reference to `__imp__ZN22LanguageServerProtocol29WorkDoneProgressCreateRequest10methodNameE'
ld.exe: languageclientmanager.o:languageclientmanager.cpp:(.text+0x4642): undefined reference to `__imp__ZN22LanguageServerProtocol20ProgressNotification10methodNameE'
ld.exe: progressmanager.o:progressmanager.cpp:(.text+0x34f): undefined reference to `__imp__ZN22LanguageServerProtocol22WorkDoneProgressReport10messageKeyE'
ld.exe: progressmanager.o:progressmanager.cpp:(.text+0x3b8): undefined reference to `__imp__ZN22LanguageServerProtocol22WorkDoneProgressReport13percentageKeyE'
ld.exe: progressmanager.o:progressmanager.cpp:(.text+0x899): undefined reference to `__imp__ZN22LanguageServerProtocol19WorkDoneProgressEnd10messageKeyE'
ld.exe: progressmanager.o:progressmanager.cpp:(.text+0xbbc): undefined reference to `__imp__ZN22LanguageServerProtocol21WorkDoneProgressBegin8titleKeyE'

#ifdef Q_OS_WIN
#    ifdef BUILD_LVS_LIBRARY
#        define EXPORT_LVS_LIB __declspec(dllexport)
#    else
#        define EXPORT_LVS_LIB __declspec(dllimport)
#    endif
#     define EXPORT_LVS_LIB_CONSTEXPR __declspec(dllexport)
#else
#    ifdef BUILD_LVS_LIBRARY
#        define EXPORT_LVS_LIB           __attribute((visibility("default"))
#        define EXPORT_LVS_LIB_CONSTEXPR __attribute((visibility("default"))
#    else
#        define EXPORT_LVS_LIB
#        define EXPORT_LVS_LIB_CONSTEXPR
#    endif
#endif