请教,编译libjpeg出错(mips-linux-gcc)

denixleen

export PATH=/root/qtopia-mips/staging_dir/bin:$PATH
export CROSS_COMPILE=mips-linux-
export CC=mips-linux-gcc
[root@denixleen libjpeg]# ./configure --enable-static --enable-shared
checking for gcc... mips-linux-gcc
checking whether the C compiler (mips-linux-gcc  ) works... no
configure: error: installation or configuration problem: C compiler cannot create executables.

请问怎么回事?我的/root/qtopia-mips/staging_dir/bin有mips-linux-gcc啊