我已经下载了expect5.4。我正在尝试针对运行精简版Linux的ARM（PandaBoard）进行交叉编译。
在配置的初始设置中，我尝试
Shell$ ./configure --host=ARM
configure: WARNING: If you wanted to set the --build type, don't use --host.
If a cross compiler is detected then cross compile mode will be used.
checking for correct TEA configuration... ok (TEA 3.9)
configure: configuring expect 5.45
checking for Tcl configuration... found /home/user1/scripts/tcl8.6.0/unix/tclConfig.sh
checking for existence of /home/user1/scripts/tcl8.6.0/unix/tclConfig.sh... loading
configure: --prefix defaulting to TCL_PREFIX /usr/local
configure: --exec-prefix defaulting to TCL_EXEC_PREFIX /usr/local
checking for ARM-gcc... /home/user1/toolchain/toolchain/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /home/user1/toolchain/toolchain/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc accepts -g... yes
checking for /home/user1/toolchain/toolchain/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc option to accept ANSI C... none needed
checking how to run the C preprocessor... /home/user1/toolchain/toolchain/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc -E
checking for a BSD-compatible install... /usr/bin/install -c
checking whether make sets $(MAKE)... yes
checking for ARM-ranlib... no
checking for ranlib... ranlib
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
..
..
..
..
..
checking for openpty... no
checking for openpty in -lutil... yes
checking if running Sequent running SVR4... no
checking build system type... i686-pc-linux-gnu
checking host system type... Invalid configuration `ARM': machine `ARM' not recognized
configure: error: /bin/bash tclconfig/config.sub ARM failed
UPDATE：使用./configure --host = arm进行编译时，我现在得到的错误更进一步是
checking for sysconf... yes
checking for strftime... yes
checking for strchr... yes
checking for timezone... yes
checking for siglongjmp... yes
checking for memcpy... yes
checking if WNOHANG requires _POSIX_SOURCE... configure: error: Expect can't be cross compiled
它可以选择arm-gcc，但是由于某些原因而失败。
--host=arm（小写）会更进一步，但不会很多：期望只是不想被交叉编译。克服这个需要在configure.in中进行一些简单的修改。它可能是如果expect是您唯一想做的事情，那么就可以合理地处理它们交叉编译，但是如果有很多其他编译，则最好设置一些您可以在其中运行编译的二进制文件的环境（scratchbox或这样的东西。
有人对运气有希望吗？用谷歌搜索预编译的二进制文件或如何交叉编译它的教程是不可能的。