Mac开发-codesign_allocate: can't allocate code signature data

参考链接 https://github.com/xamarin/xamarin-macios/issues/5243

网上说查看 /usr/bin/codesign_allocate 并替换，但这个报错本来是正常的，突然就出现了。很气怪，有时候就改了一部分代码就出现。

后面根据上面链接，发现是install_name_tool的问题，这个指令用户我们设置动态库的引用问题，但同时也会导致codesign_allocate: can't allocate code signature data

例如如下:

error: install_name_tool: can't open file: /Users/gensee/Library/Developer/Xcode/DerivedData/Webcast-fdypojugksmojmbaqvqtwgrphsmc/Build/Products/Debug/Webcast.app/Contents/MacOS/libRtRoutineOSX.dylib (No such file or directory)
finish install_name_tool target /Users/gensee/Library/Developer/Xcode/DerivedData/Webcast-fdypojugksmojmbaqvqtwgrphsmc/Build/Products/Debug/Webcast.app/Contents/MacOS/Webcast
Command /bin/sh emitted errors but did not return a nonzero exit code to indicate failure

codesign_allocate: can't allocate code signature data for:  (for architecture x86_64) because larger updated load commands do not fit (the program must be relinked using a larger -headerpad value)

和类似下面的

atal error: codesign_allocate: can't allocate code signature data for: 
            /...../X.app/Contents/Frameworks/libtiff.5.dylib
 (for architecture x86_64) 

because larger updated load commands do not fit (the program must be relinked using a larger -headerpad value)

                /..../Products/Debug/X.app: 

the codesign_allocate helper tool cannot be found or used
In subcomponent: /..../Products/Debug/X.app/Contents/Frameworks/libtiff.5.dylib

这里我的问题是：
去掉了重复和不必要的install_name_tool，或者将其放在脚本中执行，这样会在code sign之后，偶尔出现的codesign_allocate彻底解决了，不会再出现。如果你也遇到，请考虑是否install_name_tool重复操作过多的问题，避免不必要的install_name_tool