hanchenye-llvm-project

History

Reid Spencer 4742804864 First step in avoiding compilation/usage of non-relevant targets. New options have been added to the configure script that control which targets will be used. The options are: --enable-target-this (default=disabled) This will specify that the target corresponding to the build host is the target that will be compiled/used. You can't use this with any of the other options (they'll be ignored). This is what most people want. --disable-target-x86 (default=enabled) This will prevent the X86 target(s) from being compiled/used. --disable-target-sparc (default=enabled) This will prevent both SparcV8 and SparcV9 from being compiled/used. --disable-target-powerpc (default=enabled) This will prevent the PowerPC target from being compiled/used. --disable-target-alpha (default=enabled) This will prevent the Alpha target from being compiled/used. --disable-target-ia64 (default=enabled) This will prevent the IA64 target from being compiled/used. Note that without any of these options, the default behavior is to build all targets, as is the current practice. All these options do is set up the substititution variable TARGETS_TO_BUILD which contains the targets that should be compiled/used. The variable is intended to be used in the makefiles. Those changes will come later. llvm-svn: 21445		2005-04-22 07:27:28 +00:00
..
m4	This macro cannot assume that the location of install-sh and mkinstalldirs	2005-02-24 18:28:20 +00:00
.cvsignore	Ignore generated files	2004-12-22 01:49:53 +00:00
AutoRegen.sh	Get rid of old automake stuff	2004-12-22 05:56:41 +00:00
LICENSE.TXT	Adding additional license information to these files.	2003-10-13 20:34:27 +00:00
README.TXT	Fix a bug in libtool's ltmain.sh. On Cygwin the "$output.exp" expression	2004-12-24 00:15:20 +00:00
config.guess	Update to latest versions of config.guess and config.sub from	2004-09-10 19:20:06 +00:00
config.sub	Update to latest versions of config.guess and config.sub from	2004-09-10 19:20:06 +00:00
configure.ac	First step in avoiding compilation/usage of non-relevant targets. New	2005-04-22 07:27:28 +00:00
depcomp	Ensure timestamp on saved contents of configure.ac is not changed.	2004-10-10 19:09:33 +00:00
install-sh	Ensure timestamp on saved contents of configure.ac is not changed.	2004-10-10 19:09:33 +00:00
ltmain.sh	Fix a bug in libtool's ltmain.sh. On Cygwin the "$output.exp" expression	2004-12-24 00:15:20 +00:00
missing	Ensure timestamp on saved contents of configure.ac is not changed.	2004-10-10 19:09:33 +00:00
mkinstalldirs	Really get mkinstalldirs to shut up about what its doing .. who cares?	2004-10-26 05:49:38 +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.