iMX6 编译LTIB

使用./ltib编译时出现如下错误，ubuntu使用的是12.04版本：
chenke@ubuntu:~/imx6/L3.0.35_4.1.0_130816_source/source/ltib$ ./ltib
ltib cannot be run because one or more of the host packages needed to run it
are either missing or out of date or not in ltib's standard path. Please
install/upgrade these packages on your host. If you have your own utilities
in non-standard paths, please add an entry into the .ltibrc file for example:
%path_std
/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/X11R6/bin:/my/own/exes
Package Minimum ver Installed info
------- ----------- ---------------
zlib 0 not installed
Died at ./ltib line 1409.
traceback:
main::host_checks:1409
main:554

Started: Tue Dec 2 13:54:43 2016
Ended: Tue Dec 2 13:54:49 2016
Elapsed: 6 seconds

Build Failed
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