is iOS 9 necessary?

[glessard]

ibuild seems to hard-code a minimum ios version of 9.0; is this necessary?
(I've coerced openssl to build for ios 8, but at the cost of hundreds of warnings that the build was for ios 9 but linked against 8; I could easily be misdiagnosing this.)

[glessard]

For what it's worth, setting deploymentTarget to "-miphoneos-version-min=8.0" at line 84 of Builder.swift leads to a successful openssl build with no warnings when later linked with a binary that has a deployment target of iOS 8. I presume this means that the environment isn't picked up as expected in the test that precedes that line.