Check iOS deployment target of a static library

Question

I have many static libs like libBlah.a With file tool I can check supported architectures. (arm64 or i386)

Is there tool to check iOS Dep

Answer 1

The target OS version is encoded in the LC_VERSION_MIN_IPHONEOS load command in the MachO header of the static library. You can see it via:

otool -l mylib.a | grep -A 3 LC_VERSION

Example output:

      cmd LC_VERSION_MIN_IPHONEOS
  cmdsize 16
  version 9.0
      sdk n/a

Answer 2

have you tried using preprocess macros?

#if IPHONEOS_DEPLOYMENT_TARGET (iOS Deployment Target)

Answer 3

You can use otool to inspect the library file. With some experimentation I found that the flags -lv gave me useful output. Open up a terminal window and switch to the directory your library is in:

cd /path/to/parent/directory

(Hint: you can drag the icon from the title bar of a finder window into the terminal and it will enter the path for you). Then type the following command:

otool -lv myStaticLibrary.a | less

In less, type / (search) and then LC_VERSION_MIN_IPHONEOS. You should see something like this:

Load command 1
      cmd LC_VERSION_MIN_IPHONEOS
  cmdsize 16
  version 7.0
      sdk n/a

The deployment target should be the value next to version.