|  | Upgrading autoconf | 
|  | =============================================================================== | 
|  |  | 
|  | If you are in the mood to upgrade autoconf, you should: | 
|  |  | 
|  | 1. Consider not upgrading. | 
|  | 2. No really, this is a hassle, you don't want to do it. | 
|  | 3. Get the new version of autoconf and put it in <SRC> | 
|  | 4. configure/build/install autoconf with --prefix=<PFX> | 
|  | 5. Run autoupdate on all the m4 macros in llvm/autoconf/m4 | 
|  | 6. Run autoupdate on llvm/autoconf/configure.ac | 
|  | 7. Regenerate configure script with AutoRegen.sh | 
|  | 8. If there are any warnings from AutoRegen.sh, fix them and go to step 7. | 
|  | 9. Test, test, test. |