Force disble BUILD_SHARED_LIBS

- This flag breaks well-known-types build

CMakeLists.txt

@@ -10,6 +10,7 @@ include(GNUInstallDirs)
 set(QT_PROTOBUF_CMAKE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 set(QT_PROTOBUF_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
 set(QT_PROTOBUF_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
+set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
 
 find_package(Qt5 COMPONENTS Core Network Qml REQUIRED)
 if(Qt5Core_VERSION VERSION_LESS "5.12.3")