参考： https://stackoverflow.com/questions/30466062/check-ios-deployment-target-of-a-static-library/40475780

ios

✗ otool -lv libx264.a | grep LC_VERSION_MIN_IPHONEOS -B 5 -A 5 | head
      type S_COALESCED
attributes NO_TOC STRIP_STATIC_SYMS LIVE_SUPPORT
 reserved1 0
 reserved2 0
Load command 1
      cmd LC_VERSION_MIN_IPHONEOS
  cmdsize 16
  version 8.0
      sdk 13.2
Load command 2

macos

✗ otool -lv libx264.a | egrep -i 'version| minos' -B 5 -A 5 | head
      type S_COALESCED
attributes NO_TOC STRIP_STATIC_SYMS LIVE_SUPPORT
 reserved1 0
 reserved2 0
Load command 1
       cmd LC_BUILD_VERSION
   cmdsize 24
  platform macos
       sdk 10.15.6
     minos 10.15