error: ‘ptrdiff_t’ does not name a type

编译arm-qtopia-2.2.0时遇到：

../include/qvaluelist.h:88:13: error: ‘ptrdiff_t’ does not name a type
../include/qvaluelist.h:164:13: error: ‘ptrdiff_t’ does not name a type
In file included from ../include/qmap.h:46:0,
                 from kernel/qmime.h:43,
                 from kernel/qevent.h:45,
                 from kernel/qobject.h:45,
                 from kernel/qwidget.h:43,
                 from kernel/qdesktopwidget.h:40,
                 from kernel/qapplication.h:42,
                 from kernel/qapplication_x11.cpp:64:
../include/qvaluelist.h:424:13: error: ‘ptrdiff_t’ does not name a type
In file included from kernel/qmime.h:43:0,
                 from kernel/qevent.h:45,
                 from kernel/qobject.h:45,
                 from kernel/qwidget.h:43,
                 from kernel/qdesktopwidget.h:40,
                 from kernel/qapplication.h:42,
                 from kernel/qapplication_x11.cpp:64:
../include/qmap.h:107:13: error: ‘ptrdiff_t’ does not name a type
../include/qmap.h:223:13: error: ‘ptrdiff_t’ does not name a type
In file included from kernel/qmime.h:43:0,
                 from kernel/qevent.h:45,
                 from kernel/qobject.h:45,
                 from kernel/qwidget.h:43,
                 from kernel/qdesktopwidget.h:40,
                 from kernel/qapplication.h:42,
                 from kernel/qapplication_x11.cpp:64:
../include/qmap.h:604:13: error: ‘ptrdiff_t’ does not name a type

补充——
有警告：
***********************************
********* Build Qtopia ************
***********************************
QPE_CFG="'edition' 'pda' '-displaysize' '240x320' '-fontfamilies' 'helvetica fixed micro smallsmooth smoothtimes unifont' '-luuid' -no-qtopiadesktop -release -platform 'linux-g++-32' -xplatform 'linux-arm-g++'"

The following configuration values have been guessed or autodetected:
    -arch arm
    -edition pda
    -fontsizes all
    -fontstyles 50 50i 75 75i
    -languages en_US

WARNING: defaultbuttons-arm.conf does not exist.
Symlinking header files to include directory
Creating qmake...No makedepend available
make[1]: Entering directory `/home/mini6410/friendlyArm/mini6410/linux/arm-qtopia/qtopia-2.2.0-FriendlyARM/qtopia/qmake'
.

我也一样 网上说是 与gcc 的关系吧

我也遇到了··该这么解决····麻烦高手解答···

qvaluelist 少个头文件 加上就行了

/dqt/include/qvaluelist.h文件下增加两个头文件：#include “stddef.h”和#include <cstddef>