如何使用命令行将“Other Linker Flags”添加到xcode项目？

I'm trying to automate building process of xcode project. The problem is that I need to add "Other Linker Flags" when building the project. I can't just add it to the project Build Settings manually, I have to do it using the command line. May be I can edit the project file or configuration file somehow? Any options are good as long as it can be runned as a script. Any ideas? ThanksI'm trying to automate building process of xcod