Editing Using Xcode (section)

== Slow builds ==

* Use plain '''&ldquo;DWARF&rdquo;''' instead of '''&ldquo;DWARF with dSYM File&rdquo;''' as your &ldquo;Debug Information Format&rdquo;.<br />'''Project Navigator''' pane > ''left click on project'' > '''Editor Area''' > '''Build Settings''' tab > '''All''' filter under what settings to display > '''Build Options''' group > '''Debug Information Format''': DWARF
* Don’t compile your project code or use static libraries compiled with -O4 since it tells Clang to enable Link Time Optimizations (LTO) making the linking stage much slower. '''Use -O3 at most.'''<br />''Project Navigator''' pane > ''left click on project'' > '''Editor Area''' > '''Build Settings''' tab > '''All''' filter under what settings to display > '''Apple LLVM 6.0 - Code Generation''' group > '''Optimization Level''' > '''Debug''': Fastest <nowiki>[-O3]</nowiki>

From [https://labs.spotify.com/2013/11/04/shaving-off-time-from-the-ios-edit-build-test-cycle/ Shaving off 50% waiting time from the iOS Edit-Build-Test cycle] | Spotify Labs, Nov 4, 2013