-Upgrading Libtool
------------------
+Upgrading autoconf
+===============================================================================
-If you are in the mood to upgrade libtool, you must do the following:
+If you are in the mood to upgrade autoconf, you should:
-1. configure/build/install libtool with --prefix=<PFX>
-2. Copy <PFX>/share/aclocal/libtool.m4 to llvm/autoconf/m4/libtool.m4
-3. Copy <PFX>/share/libtool/ltmain.sh to llvm/autoconf/ltmain.sh
-4. Adjust the llvm/autoconf/m4/libtool.m4 file to ensure that the variable
- default_ofile is set to "mklib" instead of "libtool"
-5. Possibly adjust llvm/autoconf/m4/libtool.m4 to get rid of autoconf
- warnings related to obsolete autconf features (e.g. AC_TRY_LINK)
+ 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.