交叉编译tslib-1.4

#export PREFIX=/path_to_your_tslib_1.4_dir
#export CC=/path/to/your/cross-compiler-bin-dir
/*
autogen.sh is an important .sh file，it produce ./configure file according to current env setting
*/
#./autogen.sh
错误现象：./autogen.sh: 9: autoreconf: not found
解决办法：#sudo apt-get install autoconf
错误现象：Can't exec "automake": 没有该文件或目录 at /usr/bin/autoreconf line 183
解决办法：#sudo apt-get install automake
错误现象：configure.ac:25: error: possibly undefined macro: AC_DISABLE_STATIC
解决办法：#sudo apt-get install libtool

#echo "ac_cv_func_malloc_0_nonnull=yes" >arm-none-linux-gnueabi.cache
   
/*(it is better to see what parameter that the ./configure program take,use "./configure --help")
*you can add "--enable-debug"([default=no]),and/or "--enable-static"([default=no])
*/

#./configure --host=arm-none-linux-gnueabi --prefix=$PREFIX --cache-file=arm-none-linux-gnueabi.cache
错误现象：configure: error: C++ compiler cannot create executables
解决办法：#sudo apt-get install build-essential

#make
错误：undefined reference to rpl_malloc
解决办法（2种）：
    * configure的时候加上--with-gnu-ld这个参数
    * 或者在config.h里加上#undef rpl_malloc

#make install