Fails to build with LLD 7.0

[jbeich]

Development version of FreeBSD recently upgraded its toolchain to one based on LLVM 7.0.1 which broke this project. Maybe related to an upstream LLD bug.

$ pkg install git meson pkgconf wayland-protocols libinput libxkbcommon pixman mesa-libs
$ git clone https://github.com/swaywm/wlroots
$ cd wlroots
$ sed -i -e /examples/d meson.build
$ meson build
$ ninja -C build
[...]
ld: error: duplicate symbol 'wlr_signal_emit_safe' in version script
cc: error: linker command failed with exit code 1 (use -v to see invocation)

Environment:

$ cc --version
FreeBSD clang version 7.0.1 (tags/RELEASE_701/final 349250) (based on LLVM 7.0.1)
Target: x86_64-unknown-freebsd13.0
Thread model: posix
InstalledDir: /usr/bin
$ cc -Wl,--version
LLD 7.0.1 (FreeBSD 349250-1300001) (compatible with GNU linkers)

Workaround:

$ pkg install llvm60
$ LDFLAGS="$LDFLAGS -fuse-ld=lld60" meson build --wipe
$ ninja -C build

$ pkg install binutils
$ LDFLAGS="$LDFLAGS -fuse-ld=bfd" meson build --wipe
$ ninja -C build

[emersion]

Seems LLD doesn't handle wildcards properly.

[jbeich]

Fixed by llvm/llvm-project@e1ee3837acfe and backported in freebsd/freebsd-src@acdff3ca6471.