my call to makefile.pl is now

perl Makefile.pl INC="-IC:\prog\gtk+\include\glib-2.0 -IC:\prog\Gtk+\l
+ib\glib-2.0\include" LIBS="-LC:/prog/gtk+/lib -lglib-2.0 -lintl -lgob
+ject-2.0 -lgthread-2.0"
[download]

But I still have undefined refs errors (GVariant.o:GVariant.c undefined reference to g_value_get_variant')

g++ Glib.def -o blib\arch\auto\Glib\Glib.xs.dll -mdll -s -L"C:\STRAWB~
+1\perl\lib\CORE" -L"C:\STRAWB~1\c\lib" Glib.o GError.o GUtils.o GLog.
+o GType.o GBoxed.o GObject.o GValue.o GClosure.o GSignal.o GMainLoop.
+o GIOChannel.o GParamSpec.o GKeyFile.o GOption.o GBookmarkFile.o GVar
+iant.o gperl-gtypes.o   "C:\STRAWB~1\perl\lib\CORE\libperl524.a" "C:\
+prog\gtk+\lib\libglib-2.0.a" "C:\prog\gtk+\lib\libintl.a" "C:\prog\gt
+k+\lib\libgobject-2.0.a" "C:\prog\gtk+\lib\libgthread-2.0.a" "C:\STRA
+WB~1\c\i686-w64-mingw32\lib\libmoldname.a" "C:\STRAWB~1\c\i686-w64-mi
+ngw32\lib\libkernel32.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libuser3
+2.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libgdi32.a" "C:\STRAWB~1\c\i
+686-w64-mingw32\lib\libwinspool.a" "C:\STRAWB~1\c\i686-w64-mingw32\li
+b\libcomdlg32.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libadvapi32.a" "
+C:\STRAWB~1\c\i686-w64-mingw32\lib\libshell32.a" "C:\STRAWB~1\c\i686-
+w64-mingw32\lib\libole32.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libol
+eaut32.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libnetapi32.a" "C:\STRA
+WB~1\c\i686-w64-mingw32\lib\libuuid.a" "C:\STRAWB~1\c\i686-w64-mingw3
+2\lib\libws2_32.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libmpr.a" "C:\
+STRAWB~1\c\i686-w64-mingw32\lib\libwinmm.a" "C:\STRAWB~1\c\i686-w64-m
+ingw32\lib\libversion.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libodbc3
+2.a" "C:\STRAWB~1\c\i686-w64-mingw32\lib\libodbccp32.a" "C:\STRAWB~1\
+c\i686-w64-mingw32\lib\libcomctl32.a" -Wl,--enable-auto-image-base
GVariant.o:GVariant.c:(.text+0x1db): undefined reference to `g_value_g
+et_variant'
GVariant.o:GVariant.c:(.text+0x4274): undefined reference to `g_varian
+t_lookup_value'
GVariant.o:GVariant.c:(.text+0x1be): undefined reference to `g_value_s
+et_variant'
[download]

Given a bunch of undefined refs errors how can I spot the missing libraries ?