Meson > 0.56.0 doesn't write RPATH properly.

[dmilith]

Describe the bug
I build a lot of bundles using my "Sofin" script. I've been using meson 0.56.0 for a while now, I did upgrade it yesterday to 0.57.1 and it caused my custom PREFIX'ed bundles to fail to "see" linked libraries. After readelf -d /path/to/my/built/library I figured out that RPATH field is just empty for software built with Meson > 0.56.0.

To Reproduce
Just upgrade to Meson 0.57.1 and build some software using Meson (like p11-kit or glib or any else using at least one external library dependencies) using custom PREFIX dir (out from /usr or /usr/local). Binaries/ libraries will be built fine, but ldd /path/to/my/built/bin/or/lib will show missing shared objects (and no RPATH field present in ELF header).

Expected behavior
Meson 0.56.0 works flawlessly here :) RPATH is present and the build works fine.

system parameters

• OS: FreeBSD 12.2, x86_64
• Python: 3.9.2
• Ninja: 1.10.2

[arichardson]

I am also seeing that unlike CMake, meson does not automatically set rpath for dependencies that are linked in, unless I explicitly pass -Wl,-rpath,... in my LDFLAGS. Ideally it should also strip the --sysroot= prefix from those paths.

[tristan957]

Is this still an issue?