libtool: link: gcc -g -O2 -Wall -Wdeclaration-after-statement -Wmissing-prototypes -Wmissing-declarations -Winit-self -Wpointer-arith -Wold-style-definition -o .libs/gimp-thumbnail-list gimp-thumbnail-list.o ./.libs/libgimpthumb-2.0.so -pthread -Wl,-rpath -Wl,/usr/local/lib
/usr/bin/ld: gimp-thumbnail-list.o: undefined reference to symbol 'g_object_unref'
/usr/bin/ld: note: 'g_object_unref' is defined in DSO /lib/libgobject-2.0.so.0 so try adding it to the linker command line
/lib/libgobject-2.0.so.0: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make[2]: *** [gimp-thumbnail-list] Error 1
make[2]: Leaving directory `/home/ghoz/gimp-2.6.11/libgimpthumb'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/ghoz/gimp-2.6.11'
make: *** [all] Error 2