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"
+ 6. Copy <PFX>/share/libtool/libltdl/ltdl.c to llvm/lib/System
+ 7. Copy <PFX>/share/libtool/libltdl/ltdl.h to llvm/lib/System
+ 8. Edit the ltdl.h file to #include "llvm/Config/config.h" at the very top. You
+ might also need to resolve some compiler warnings (typically about
+ comparison of signed vs. unsigned values). But, you won't find out about
+ those until you build LLVM (step 13).
+ 9. Edit the llvm/autoconf/m4/libtool.m4 file so that:
+ a) in AC_PROB_LIBTOOL macro, the value of LIBTOOL is set to
+ $(top_builddir)/mklib, not $(top_builddir)/libtool
+ b) in AC_LIBTOOL_SETUP macro, the variable default_ofile is set to
+ "mklib" instead of "libtool"
+ c) s/AC_ENABLE_SHARED_DEFAULT/enable_shared_default/g
+ d) s/AC_ENABLE_STATIC_DEFAULT/enable_static_default/g
+ e) s/AC_ENABLE_FAST_INSTALL_DEFAULT/enable_fast_install_default/g
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
+12. If there are any warnings from AutoRegen.sh, go to step 9.
+13. Rebuild LLVM, making sure it reconfigures
14. Test the JIT which uses libltdl
15. If it all works, only THEN commit the changes.
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.
+ 8. If there are any warnings from AutoRegen.sh, fix them and go to step 7.
9. Test, test, test.