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annotate autoconf/README.TXT @ 59:322ba4588e4f

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author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 02 Feb 2014 17:39:42 +0900
parents 95c75e76d11b
children 54457678186b
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 Upgrading Libtool
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2 ===============================================================================
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3
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4 If you are in the mood to upgrade libtool, you must do the following:
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5
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6 1. Get the new version of libtool and put it in <SRC>
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7 2. configure/build/install libtool with --prefix=<PFX>
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8 3. Copy <SRC>/ltdl.m4 to llvm/autoconf/m4
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9 4. Copy <PFX>/share/aclocal/libtool.m4 to llvm/autoconf/m4/libtool.m4
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10 5. Copy <PFX>/share/libtool/ltmain.sh to llvm/autoconf/ltmain.sh
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11 6. Copy <PFX>/share/libtool/libltdl/ltdl.c to llvm/lib/System
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12 7. Copy <PFX>/share/libtool/libltdl/ltdl.h to llvm/lib/System
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13 8. Edit the ltdl.h file to #include "llvm/Config/config.h" at the very top. You
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14 might also need to resolve some compiler warnings (typically about
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15 comparison of signed vs. unsigned values). But, you won't find out about
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16 those until you build LLVM (step 13).
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17 9. Edit the llvm/autoconf/m4/libtool.m4 file so that:
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18 a) in AC_PROB_LIBTOOL macro, the value of LIBTOOL is set to
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19 $(top_builddir)/mklib, not $(top_builddir)/libtool
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20 b) in AC_LIBTOOL_SETUP macro, the variable default_ofile is set to
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21 "mklib" instead of "libtool"
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22 c) s/AC_ENABLE_SHARED_DEFAULT/enable_shared_default/g
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23 d) s/AC_ENABLE_STATIC_DEFAULT/enable_static_default/g
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24 e) s/AC_ENABLE_FAST_INSTALL_DEFAULT/enable_fast_install_default/g
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25 10. Run "autoupdate libtool.m4 ltdl.m4" in the llvm/autoconf/m4 directory.
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26 This should correctly update the macro definitions in the libtool m4
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27 files to match the version of autoconf that LLVM uses. This converts
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28 AC_HELP_STRING to AS_HELP_STRING and AC_TRY_LINK to AC_LINK_IFELSE, amongst
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29 other things. You may need to manually adjust the files.
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30 11. Run AutoRegen.sh to get the new macros into configure script
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31 12. If there are any warnings from AutoRegen.sh, go to step 9.
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32 13. Rebuild LLVM, making sure it reconfigures
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33 14. Test the JIT which uses libltdl
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34 15. If it all works, only THEN commit the changes.
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35
95c75e76d11b LLVM 3.4
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36 Upgrading autoconf
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37 ===============================================================================
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38
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39 If you are in the mood to upgrade autoconf, you should:
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40
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41 1. Consider not upgrading.
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42 2. No really, this is a hassle, you don't want to do it.
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43 3. Get the new version of autoconf and put it in <SRC>
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44 4. configure/build/install autoconf with --prefix=<PFX>
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45 5. Run autoupdate on all the m4 macros in llvm/autoconf/m4
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46 6. Run autoupdate on llvm/autoconf/configure.ac
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47 7. Regenerate configure script with AutoRegen.sh
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48 8. If there are any warnings from AutoRegen.sh, fix them and go to step 7.
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49 9. Test, test, test.