Add link directory info and windows workflow attempt

Author: nbollom

.github/workflows/cmake_windows.yml

@@ -24,6 +24,7 @@ jobs:
             make
             zlib
             mingw-w64-ucrt-x86_64-qt6-base
+            mingw-w64-gtkmm-4.0
           pacboy: >-
             toolchain:p
             cmake:p

gtk/CMakeLists.txt

@@ -46,6 +46,7 @@ add_library(pq2gtk SHARED ${SOURCE_FILES})
 add_dependencies(pq2gtk dummy-resource)
 
 target_link_libraries(pq2gtk pq2gui pq2game pq2utils ${GTKMM_LIBRARIES})
+target_link_directories(pq2gtk PRIVATE ${GTKMM_LIBRARY_DIRS})
 target_include_directories(pq2gtk
         PRIVATE pq2gui pq2game pq2utils ${GTKMM_INCLUDE_DIRS}
         INTERFACE ${CMAKE_CURRENT_SOURCE_DIR} ${GTKMM_INCLUDE_DIRS}