make menuconfig 提示 Unable to find the ncurses ......

详细描述：
1、公司电脑不能上网，我安装的是64位的Ubuntu 12.04 Desktop版。
2、需要编译Linux内核，用“make menuconfig”来配置。
3、ncurses 库及其依赖其实已经通过 dpkg -i xxx 的方式手动安装了。
4、cd 到内核根目录，直接执行 make menuconfig 是可以的，有正常的配置界面。
5、但是当我执行完环境变量的配置文件后，再执行 make menuconfig 就会出现以下提示：
*** Unable to find the ncurses libraries or the
*** required header files.
*** 'make menuconfig' requires the ncurses libraries.
***
*** Install ncurses (ncurses-devel) and try again.
***
make[1]: *** [scripts/kconfig/dochecklxdialog] 错误 1
make: *** [menuconfig] 错误 2
6、我所使用的目标平台是imx6q，交叉编译工具链是 arm-poky-linux-gnueabi- 。

执行环境变量的配置文件的命令：source /opt/poky/1.5.3/environment-setup
而 environment-setup 的内容如下：

export PATH=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin:/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi:$PATH

export PKG_CONFIG_SYSROOT_DIR=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi

export PKG_CONFIG_PATH=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/lib/pkgconfig

export CONFIG_SITE=/opt/poky/1.5.3/site-config-cortexa9hf-vfp-neon-poky-linux-gnueabi

export CC="arm-poky-linux-gnueabi-gcc  -march=armv7-a -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a9 --sysroot=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export CXX="arm-poky-linux-gnueabi-g++  -march=armv7-a -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a9 --sysroot=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export CPP="arm-poky-linux-gnueabi-gcc -E  -march=armv7-a -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a9 --sysroot=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export AS="arm-poky-linux-gnueabi-as "

export LD="arm-poky-linux-gnueabi-ld  --sysroot=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export GDB=arm-poky-linux-gnueabi-gdb

export STRIP=arm-poky-linux-gnueabi-strip

export RANLIB=arm-poky-linux-gnueabi-ranlib

export OBJCOPY=arm-poky-linux-gnueabi-objcopy

export OBJDUMP=arm-poky-linux-gnueabi-objdump

export AR=arm-poky-linux-gnueabi-ar

export NM=arm-poky-linux-gnueabi-nm

export M4=m4

export TARGET_PREFIX=arm-poky-linux-gnueabi-

export CONFIGURE_FLAGS="--target=arm-poky-linux-gnueabi --host=arm-poky-linux-gnueabi --build=x86_64-linux --with-libtool-sysroot=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export CFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types"

export CXXFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types -fpermissive"

export LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed"

export CPPFLAGS=""

export OECORE_NATIVE_SYSROOT="/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux"

export OECORE_TARGET_SYSROOT="/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi"

export OECORE_ACLOCAL_OPTS="-I /opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/share/aclocal"

export OECORE_DISTRO_VERSION="1.5.3"

export OECORE_SDK_VERSION="1.5.3"

export PYTHONHOME=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr

export ARCH=arm

export CROSS_COMPILE=arm-poky-linux-gnueabi-

export OE_QMAKE_CFLAGS="$CFLAGS"

export OE_QMAKE_CXXFLAGS="$CXXFLAGS"

export OE_QMAKE_LDFLAGS="$LDFLAGS"

export OE_QMAKE_CC=$CC

export OE_QMAKE_CXX=$CXX

export OE_QMAKE_LINK=$CXX

export OE_QMAKE_AR=$AR

export OE_QMAKE_LIBDIR_QT=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi//usr/lib

export OE_QMAKE_INCDIR_QT=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi//usr/include/qt4

export OE_QMAKE_MOC=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/moc4

export OE_QMAKE_UIC=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/uic4

export OE_QMAKE_UIC3=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/uic34

export OE_QMAKE_RCC=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/rcc4

export OE_QMAKE_QDBUSCPP2XML=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/qdbuscpp2xml4

export OE_QMAKE_QDBUSXML2CPP=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux/usr/bin/qdbusxml2cpp4

export OE_QMAKE_QT_CONFIG=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi//usr/share/qt4/mkspecs/qconfig.pri

export QMAKESPEC=/opt/poky/1.5.3/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi//usr/share/qt4/mkspecs/linux-g++

export QT_CONF_PATH=/opt/poky/1.5.3/sysroots/x86_64-pokysdk-linux//etc/qt.conf

因为公司电脑不能上网，所以不能用 sudo apt-get install libncurses* 的方式安装，不知道是不是我手动安装不正确呢。
大神路过麻烦帮我看看是怎么回事，谢谢！