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54d1448fcc
llvm-6502/autoconf
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Reid Spencer 54d1448fcc For PR723: 
Support detection of a "CVS" directory at configure time to distinguish
whether this is a release build or a "from tree" build. This knowledge is
used to set the defaults for --enable-optimzied and --enable-assertions
options.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27487 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-07 16:01:51 +00:00
..
m4 Update to llvm-config tool, by Erik Kidd: 2006-03-23 23:21:29 +00:00
.cvsignore
AutoRegen.sh
config.guess
config.sub
configure.ac For PR723: 2006-04-07 16:01:51 +00:00
depcomp
install-sh
LICENSE.TXT
ltmain.sh Fix a bug in libtool's ltmain.sh. On Cygwin the "$output.exp" expression 2004-12-24 00:15:20 +00:00
missing
mkinstalldirs
README.TXT Fix a bug in libtool's ltmain.sh. On Cygwin the "$output.exp" expression 2004-12-24 00:15:20 +00:00

README.TXT 

Upgrading Libtool
===============================================================================

If you are in the mood to upgrade libtool, you must do the following:

 1. Get the new version of libtool and put it in <SRC>
 2. configure/build/install libtool with --prefix=<PFX>
 3. Copy <SRC>/ltdl.m4 to llvm/autoconf/m4
 4. Copy <PFX>/share/aclocal/libtool.m4 to llvm/autoconf/m4/libtool.m4
 5. Copy <PFX>/share/libtool/ltmain.sh to llvm/autoconf/ltmain.sh
 6. Run sed -e 's/output.exp/outputname.exp/g' on ltmain.sh
 7. Copy <PFX>/share/libtool/libltdl/ltdl.c to llvm/lib/System
 8. Copy <PFX>/share/libtool/libltdl/ltdl.h to llvm/lib/System
 9. Adjust the llvm/autoconf/m4/libtool.m4 file to ensure that the variable
    default_ofile is set to "mklib" instead of "libtool"
10. Run "autoupdate libtool.m4 ltdl.m4" in the llvm/autoconf/m4 directory.
    This should correctly update the macro definitions in the libtool m4 
    files to match the version of autoconf that LLVM uses. This converts
    AC_HELP_STRING to AS_HELP_STRING and AC_TRY_LINK to AC_LINK_IFELSE, amongst
    other things. You may need to manually adjust the files.
11. Run AutoRegen.sh to get the new macros into configure script
12. If there are any warnings from configure, go to step 9.
13. Rebuild LLVM, making sure it reconfigured
14. Test the JIT which uses libltdl
15. If it all works, only THEN commit the changes.

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 autoconf, fix them and go to step 7.
 9. Test, test, test.