[astrange]

main() is the entry point function in newer OS X versions. Why ship crt0 in everything when you can put it in dyld?

[derefr]

crt0 would still get linked into static binaries in OSX, I presume.

[nknighthb]

What static binaries would those be?

https://developer.apple.com/library/mac/qa/qa1118/_index.htm...