Merging r259342 (with s/p2align 4/align 16) because r258750 is not in 3.8.

[oota-llvm.git] / autoconf / README.TXT

diff --git a/autoconf/README.TXT b/autoconf/README.TXT
index 59724a441b93bcad4a57132dac08f196ff972050..2fc9d3a3c480656c7d1584a23a471db3bb3d18f7 100644 (file)
--- a/autoconf/README.TXT
+++ b/autoconf/README.TXT
@@ -1,12 +1,14 @@
-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.