安装gd出错并处理故障

编译最新的2.0.35版本，用默认的 ./configure编译
当make的时候，出现以下错误

configure.ac:64: error: possibly undefined macro: AM_ICONV
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
make: *** [configure] Error 1

解决办法 ，编译加m4_pattern_allow参数

即：./configure --enable-m4_pattern_allow

便能顺利编译安装