forked from OSchip/llvm-project
50 lines
2.5 KiB
Plaintext
50 lines
2.5 KiB
Plaintext
Upgrading Libtool
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===============================================================================
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If you are in the mood to upgrade libtool, you must do the following:
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1. Get the new version of libtool and put it in <SRC>
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2. configure/build/install libtool with --prefix=<PFX>
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3. Copy <SRC>/ltdl.m4 to llvm/autoconf/m4
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4. Copy <PFX>/share/aclocal/libtool.m4 to llvm/autoconf/m4/libtool.m4
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5. Copy <PFX>/share/libtool/ltmain.sh to llvm/autoconf/ltmain.sh
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6. Copy <PFX>/share/libtool/libltdl/ltdl.c to llvm/lib/System
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7. Copy <PFX>/share/libtool/libltdl/ltdl.h to llvm/lib/System
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8. Edit the ltdl.h file to #include "llvm/Config/config.h" at the very top. You
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might also need to resolve some compiler warnings (typically about
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comparison of signed vs. unsigned values). But, you won't find out about
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those until you build LLVM (step 13).
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9. Edit the llvm/autoconf/m4/libtool.m4 file so that:
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a) in AC_PROB_LIBTOOL macro, the value of LIBTOOL is set to
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$(top_builddir)/mklib, not $(top_builddir)/libtool
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b) in AC_LIBTOOL_SETUP macro, the variable default_ofile is set to
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"mklib" instead of "libtool"
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c) s/AC_ENABLE_SHARED_DEFAULT/enable_shared_default/g
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d) s/AC_ENABLE_STATIC_DEFAULT/enable_static_default/g
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e) s/AC_ENABLE_FAST_INSTALL_DEFAULT/enable_fast_install_default/g
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10. Run "autoupdate libtool.m4 ltdl.m4" in the llvm/autoconf/m4 directory.
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This should correctly update the macro definitions in the libtool m4
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files to match the version of autoconf that LLVM uses. This converts
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AC_HELP_STRING to AS_HELP_STRING and AC_TRY_LINK to AC_LINK_IFELSE, amongst
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other things. You may need to manually adjust the files.
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11. Run AutoRegen.sh to get the new macros into configure script
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12. If there are any warnings from AutoRegen.sh, go to step 9.
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13. Rebuild LLVM, making sure it reconfigures
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14. Test the JIT which uses libltdl
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15. If it all works, only THEN commit the changes.
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Upgrading autoconf
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===============================================================================
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If you are in the mood to upgrade autoconf, you should:
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1. Consider not upgrading.
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2. No really, this is a hassle, you don't want to do it.
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3. Get the new version of autoconf and put it in <SRC>
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4. configure/build/install autoconf with --prefix=<PFX>
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5. Run autoupdate on all the m4 macros in llvm/autoconf/m4
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6. Run autoupdate on llvm/autoconf/configure.ac
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7. Regenerate configure script with AutoRegen.sh
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8. If there are any warnings from AutoRegen.sh, fix them and go to step 7.
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9. Test, test, test.
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