Re: PG vs LLVM 12 on seawasp, next round

[Andres Freund]

Hi,

On 2020-12-01 17:35:49 +1300, Thomas Munro wrote:
> Since seawasp's bleeding edge LLVM installation moved to "trunk
> 20201114 c8f4e06b 12.0.0" ~16 days ago, it has been red.  Further
> updates didn't help it and it's now on "trunk 20201127 6ee22ca6
> 12.0.0".  I wonder if there is something in Fabien's scripting that
> needs to be tweaked, perhaps a symlink name or similar.  I don't
> follow LLVM development but I found my way to a commit[1] around the
> right time that mentions breaking up the OrcJIT library, so *shrug*
> maybe that's a clue.
> 
> +ERROR:  could not load library
> "/home/fabien/pg/build-farm-11/buildroot/HEAD/pgsql.build/tmp_install/home/fabien/pg/build-farm-11/buildroot/HEAD/inst/lib/postgresql/llvmjit.so":
> libLLVMOrcJIT.so.12git: cannot open shared object file: No such file
> or directory

It's a change in how LLVM dependencies are declared
internally. Previously the 'native' component was - unintentionally -
transitively included via the 'orcjit' component, but now that's not the
case anymore.

The attached patch should fix it, I think?

Greetings,

Andres Freund

diff --git i/config/llvm.m4 w/config/llvm.m4
index a5f4a9af448..3a75cd8b4df 100644
--- i/config/llvm.m4
+++ w/config/llvm.m4
@@ -76,6 +76,7 @@ AC_DEFUN([PGAC_LLVM_SUPPORT],
       debuginfodwarf) pgac_components="$pgac_components $pgac_component";;
       orcjit) pgac_components="$pgac_components $pgac_component";;
       passes) pgac_components="$pgac_components $pgac_component";;
+      native) pgac_components="$pgac_components $pgac_component";;
       perfjitevents) pgac_components="$pgac_components $pgac_component";;
     esac
   done;
diff --git i/configure w/configure
index ffcd0c5b1d4..2a03ed0a018 100755
--- i/configure
+++ w/configure
@@ -5168,6 +5168,7 @@ fi
       debuginfodwarf) pgac_components="$pgac_components $pgac_component";;
       orcjit) pgac_components="$pgac_components $pgac_component";;
       passes) pgac_components="$pgac_components $pgac_component";;
+      native) pgac_components="$pgac_components $pgac_component";;
       perfjitevents) pgac_components="$pgac_components $pgac_component";;
     esac
   done;