Use STATIC libraries instead of OBJECT for MSVC

There isn't a practical need to use an object library and only causes
complications when linking into the main vulkan-1.dll.

loader/CMakeLists.txt

@@ -204,10 +204,13 @@ end
         add_custom_target(loader_asm_gen_files DEPENDS gen_defines.asm)
         set_target_properties(loader_asm_gen_files PROPERTIES FOLDER ${LOADER_HELPER_FOLDER})
 
-        add_library(loader-unknown-chain OBJECT unknown_ext_chain_masm.asm)
+        add_library(loader-unknown-chain STATIC unknown_ext_chain_masm.asm)
         target_link_libraries(loader-unknown-chain Vulkan::Headers)
         target_include_directories(loader-unknown-chain PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
         add_dependencies(loader-unknown-chain loader_asm_gen_files)
+
+        # Work around bug in CMake + Ninja, see https://discourse.cmake.org/t/building-lib-file-from-asm-cmake-bug/1959
+        set(CMAKE_ASM_MASM_CREATE_STATIC_LIBRARY "<CMAKE_AR> /OUT:<TARGET> <LINK_FLAGS> <OBJECTS>")
     else()
         set(USE_ASSEMBLY_FALLBACK ON)
         message(WARNING "Could not find working MASM assembler\n${ASM_FAILURE_MSG}")
@@ -302,7 +305,7 @@ endif()
 if(USE_ASSEMBLY_FALLBACK)
     add_custom_target(loader_asm_gen_files)
     if (MSVC)
-        add_library(loader-unknown-chain OBJECT unknown_ext_chain.c)
+        add_library(loader-unknown-chain STATIC unknown_ext_chain.c)
         target_link_libraries(loader-unknown-chain loader_specific_options)
         set_target_properties(loader-unknown-chain PROPERTIES CMAKE_C_FLAGS_DEBUG "${MODIFIED_C_FLAGS_DEBUG}")
     else()
@@ -323,16 +326,13 @@ if(WIN32)
         set(RC_FILE_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/loader.rc)
     endif()
 
-    set(LOADER_UNKNOWN_CHAIN_LIBRARY $<$<TARGET_EXISTS:loader-unknown-chain>:$<TARGET_OBJECTS:loader-unknown-chain>>)
-
     add_library(vulkan
                 SHARED
                 ${NORMAL_LOADER_SRCS}
-                ${LOADER_UNKNOWN_CHAIN_LIBRARY}
                 ${CMAKE_CURRENT_SOURCE_DIR}/${API_TYPE}-1.def
                 ${RC_FILE_LOCATION})
 
-    target_link_libraries(vulkan PRIVATE loader_specific_options loader-opt)
+    target_link_libraries(vulkan PRIVATE loader_specific_options loader-opt loader-unknown-chain)
 
     # when adding the suffix the import and runtime library names must be consistent
     # mingw: libvulkan-1.dll.a / vulkan-1.dll