Further reading:

Fabien Sanglard in driving compilers: https://fabiensanglard.net/dc/

GNU binutils with their own take on how to process static archives (libfoo.a) https://sourceware.org/bugzilla/show_bug.cgi?id=32006

Linkers: Mold: https://news.ycombinator.com/item?id=26233244

Wild: https://news.ycombinator.com/item?id=42814683

List of FOSS C linkers:

GNU ld

GNU gold

LLVM lld mold (by LLVM lld author)

wild

EDIT: typesetting