regression: linking using filename of .so library results in "unable to find library" from zig 0.14

[chrisirhc]

Zig Version

0.14.0
(This worked in 0.13.0)

Steps to Reproduce and Observed Behavior

1. Clone https://github.com/chrisirhc/zig-cc-repro/
2. Update CXX path in Makefile to point to zig
3. Run make

Observed:

 % make
./zig/zig-linux-x86_64-0.14.0/zig c++ -fPIC -shared -o mylib.so mylib.cpp
./zig/zig-linux-x86_64-0.14.0/zig c++ -o main main.cpp -L. -l :mylib.so
ld.lld: error: unable to find library -l:mylib.so
make: *** [Makefile:17: main] Error 1

Expected Behavior

Compile successfully.

Description of this behavior

-l :mylib.so should work but it no longer works. The -l xyz.so (without colon :) format only works when the library is in the libxyz.so name format.

ld manual

[chrisirhc]

Might be fixed via #19818 as it sounds related.