こけ4 src/network/qsockdevice.h
ws2tcpip.h をinclude

g++ -Wl,-enable-stdcall-fixup -Wl,-enable-auto-import
-Wl,-enable-runtime-pseudo-reloc -mthreads
-Wl,-s -Wl,-subsystem,windows -shared -Wl,--export-all-symbols
-Wl,--out-implib,C:\qt-3\lib\libqt-mt.a
-o C:\qt-3\lib\qt-mt333.dll
object_ld_script objmoc_ld_script
-L"C:\qt-3\lib" -lopengl32 -lglu32 -lkernel32 -luser32
-lgdi32 -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32
-luuid -limm32 -lwinmm -lwsock32 -lwinspool


[リンカががんばってる図]
Mem: 523760K av, 500212K used, 23548K free
Swap: 639376K av, 609600K used, 29776K free 29852K cached

COMMAND PID USER TIME %KER %USE PRI RSS SWAP %MEM THRD %CPU
ld 1336 Administra 11:44 0 99 8 317616 435204 60.64 1 95.10

...
...
c:\mingw\bin\..\lib\gcc-lib\i686-pc-mingw32\3.3.3\..\..\..\..\
i686-pc-mingw32\bin\ld.exe: out of memory allocating 4400 bytes

mingw32-make[2]: *** [C:\qt-3\lib\qt-mt333.dll] Error 1
...スワップ増やして再起動します