[yocto] Can't find the header files after install adt_installer.tar.gz

[Neil.Wu at Emerson.com]

Hi all :
           I have installed  the adt_installer .tar.gz like fllowing:
              $ cd ~
              $ tar -xjf adt_installer.tar.bz2
              $ cd adt-installer
              $ ./adt_installer

        Because the YOCTOADT_TARGET_SYSROOT_LOC_arm="$HOME/test-yocto/$YOCTOADT_TARGET_MACHINE_arm  in adt_installer.conf file ,
        then I extract the myself Root Filesystem:
             $source /opt/poky/1.7/environment-setup-i586-poky-linux
             $ runqemu-extract-sdk           ~/Downloads/core-image-arm-rootfs.tar.bz2           $HOME/ test-yocto/ qemuarm/

       Try to compile  the  "Helloworld", it apper this error:
          hello.c:1:19: fatal error: stdio.h: No such file or directory

    Do you know how to resolve the issue? Please help me !
    Thank you very much!
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