Updating extensions for iOS 9

Let's collect knowledge like we did with Updating extensions for iOS 8 and Updating extensions for iOS 7 - paste in your notes and share what you've learned, and somebody else will organize it later. :) If you want to ask questions and share tips over chat with other developers, see How to use IRC for how to connect to #theos and #iphonedev.

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Compiling ldid on El Capitan

Not quite iOS 9, but still something to be aware of: El Capitan does not include OpenSSL, which ldid requires to compile. In order to get OpenSSL and modify ldid's make script to use it, follow these steps.

• Install Homebrew if you haven't already.
• Install OpenSSL through Homebrew:

   brew install openssl

• Clone ldid as normal.
• Download this modded make.sh and replace the old one with this one.
• Make as normal:

   ./make.sh

Runtime changes

Code must be compiled with

   -Wl,-segalign,4000

This LDFLAG can be used to compile for older iOS versions as it had to be a multiple of 1000.

If using Theos, add it like so:

   XXX_LDFLAGS += -Wl,-segalign,4000

If using Xcode, add a new entry to Other linker flags containing "-Wl,-segalign,4000" to the build settings of your project or target.

Source: saurik's tweet