现象：
Checking libtoolize version:
2.4.2
Checking tar version:
1.26
Package zlib was not found in the pkg-config search path.
Perhaps you should add the directory containing `zlib.pc'
to the PKG_CONFIG_PATH environment variable
No package 'zlib' found
ERROR: pkg-config zlib failed
Your distribution may require you to use a special setting of PKG_CONFIG_PATH
make[1]: *** [prebuild_checks] Error 1
make[1]: Leaving directory `/home/wangxinyu/work/AX1803/6755_sdk'
make: *** [default] Error 2
解决方法：
yum install zlib-devel.i686 zlib-devel.x86_64
其中配置文件路径为
/usr/lib/pkgconfig/zlib.pc
/usr/lib64/pkgconfig/zlib.pc
(Centos7编译环境使用yum，ubuntu使用apt-get，OpenSUSE使用zypper )