[ruby-core:119447] [Ruby master Bug#20783] --enable-shared and the rpath/runpath are broken on Linux on CRuby master

["hsbt (Hiroshi SHIBATA) via ruby-core" <ruby-core@ml.ruby-lang.org>]

Issue #20783 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Open to Assigned
Assignee set to nobu (Nobuyoshi Nakada)

----------------------------------------
Bug #20783: --enable-shared and the rpath/runpath are broken on Linux on CRuby master
https://bugs.ruby-lang.org/issues/20783#change-110066

* Author: Eregon (Benoit Daloze)
* Status: Assigned
* Assignee: nobu (Nobuyoshi Nakada)
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
https://github.com/ruby/ruby-dev-builder/actions/runs/11095200420
```
$ ruby test_files/cli_test.rb
ruby: error while loading shared libraries: libruby.so.3.4: cannot open shared object file: No such file or directory
```

And indeed locally I can confirm it's broken (I use ruby-build for convenience, as you can see it just does a bunch of regular build commands):
```
$ RUBY_CONFIGURE_OPTS=--enable-shared ruby-build ruby-dev -d ~/.rubies   
==> Cloning https://github.com/ruby/ruby.git...
-> git clone --depth 1 --branch master https://github.com/ruby/ruby.git ruby-master
...
==> Installing ruby-master...
-> autoreconf -i
-> ./configure "--prefix=$HOME/.rubies/ruby-dev" --enable-shared
-> make -j 16
-> make update-gems extract-gems install
==> Installed ruby-master to /home/eregon/.rubies/ruby-dev
```

And that build with `--enable-shared` is not working, same as on GitHub Actions:
```
$ /home/eregon/.rubies/ruby-dev/bin/ruby -v
/home/eregon/.rubies/ruby-dev/bin/ruby: error while loading shared libraries: libruby.so.3.4: cannot open shared object file: No such file or directory

$ ldd /home/eregon/.rubies/ruby-dev/bin/ruby
	linux-vdso.so.1 (0x00007fff9018c000)
	libruby.so.3.4 => not found
	libz.so.1 => /lib64/libz.so.1 (0x00007f4c8d928000)
	libcrypt.so.2 => /lib64/libcrypt.so.2 (0x00007f4c8d8ef000)
	libm.so.6 => /lib64/libm.so.6 (0x00007f4c8d80e000)
	libc.so.6 => /lib64/libc.so.6 (0x00007f4c8d62c000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f4c8d95e000)

$ readelf -d /home/eregon/.rubies/ruby-dev/bin/ruby

Dynamic section at offset 0x2db8 contains 29 entries:
  Tag        Type                         Name/Value
 0x0000000000000001 (NEEDED)             Shared library: [libruby.so.3.4]
 0x0000000000000001 (NEEDED)             Shared library: [libz.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libcrypt.so.2]
 0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x000000000000001d (RUNPATH)            Library runpath: [/home/eregon/.rubies/ruby-dev/lib-L/home/eregon/.rubies/ruby-dev/lib]
...
```

@hsbt said he remembers https://github.com/ruby/ruby/commit/1f6d2e77d9be9a5a829e60908d21d621f4e1ceb0 changed something in this area which might be the cause.

Once this is fixed we should also revert https://github.com/ruby/docker-images/pull/107.



-- 
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