bug#81031: Installing Guile 3.0.11 on Ubuntu 22.04

Zyle Moore <[email protected]> writes:

That's great you got it working.

> 1. Add "/usr/local/lib" to a new file in /etc/ld.so.conf.d/usr-local.conf.

This is in my view an Ubuntu bug for not allowing the normal RPATH
mechanism, and given that they don't, that it wasn't documented well
enough that you noticed :-) But apparently adding /usr/local/lib to the
ld.so.conf is the plan.  I wonder what the docs said about how files in
/etc/ld.so.conf.d are ordered, both among themselves, and relative to
the built-in search path, but that's not about guile.

> After doing this, running `ldconfig` resulted in this error
> /sbin/ldconfig.real: /usr/local/lib/libguile-3.0.so.1.7.1-gdb.scm is not an
> ELF file - it has the wrong magic bytes at the start.
>
> 2. Remove libguile-3.0.so.1.7.1-gdb.scm from /usr/local/lib
>
> I'm not sure if this is Ubuntu special sauce, or if this file is ending up
> there incorrectly, but it really wants everything in all ld folders to be
> only ELF files. After doing these two steps after `sudo make install`,
> guile seems to be working now.

guile script that is helpful for running guile under gdb.  Read it!

I don't think there are any rules in the larger POSIX ecosystem about
not having files that aren't ELF libs in $prefix/lib.    I see this as a
self-inflicted wound by Ubuntu's ld.so.conf decision;  normally a file
in $prefix/lib is only even opened if there is a NEEDED/RPATH
combination that references it.

It may be that having .so in it somwehere is the issue.  There are
non-ELF files in lib mnormally.  FWIW on my system:

  $ ls -l /usr/pkg/guile/3.0/lib/
  total 4120
  drwxr-xr-x  3 root  wheel      512 Dec  6  2022 guile
  -rw-r--r--  1 root  wheel  2657138 Apr 26 05:46 libguile-3.0.a
  -rwxr-xr-x  1 root  wheel     1063 Apr 26 05:46 libguile-3.0.la
  lrwxr-xr-x  1 root  wheel       21 Apr 26 05:46 libguile-3.0.so -> libguile-3.0.so.1.7.1
  lrwxr-xr-x  1 root  wheel       21 Apr 26 05:46 libguile-3.0.so.1 -> libguile-3.0.so.1.7.1
  -rwxr-xr-x  1 root  wheel  1486880 Apr 26 05:46 libguile-3.0.so.1.7.1
  -rw-r--r--  1 root  wheel    17469 Apr 26 05:46 libguile-3.0.so.1.7.1-gdb.scm
  drwxr-xr-x  2 root  wheel      512 Apr 26 05:47 pkgconfig


> Below is the output of ldd and objdump for context
> ldd:
> zymus@abyss:~/src/guile-3.0.11$ ldd /usr/local/bin/guile
> linux-vdso.so.1 (0x00007ffc61064000)
> libguile-3.0.so.1 => /usr/local/lib/libguile-3.0.so.1 (0x00007aecfc4e7000)
> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007aecfc200000)
> libgc.so.1 => /lib/x86_64-linux-gnu/libgc.so.1 (0x00007aecfc472000)
> libffi.so.8 => /lib/x86_64-linux-gnu/libffi.so.8 (0x00007aecfc465000)
> libunistring.so.5 => /usr/local/lib/libunistring.so.5 (0x00007aecfc017000)
> libgmp.so.10 => /lib/x86_64-linux-gnu/libgmp.so.10 (0x00007aecfbf95000)
> libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007aecfc429000)
> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007aecfbeae000)
> /lib64/ld-linux-x86-64.so.2 (0x00007aecfc64a000)
>
> objdump:
> zymus@abyss:~/src/guile-3.0.11$ objdump -x /usr/local/bin/guile | egrep
> NEEDED\|RPATH
>   NEEDED               libguile-3.0.so.1
>   NEEDED               libc.so.6

So missing RPATH as you already determined, but otherwise looks fine to
me.

Did guile insttall unistring, or did you have to build that too?