How to you get verbose output from ld when using Cargo?

How do you get the ld linker to be verbose when you use Cargo? I've tried several things in .cargo/config, but without luck. What would the right settings be? When using gcc directly, I can just do -Wl,--verbose.

[build]
rustflags = [
    "-C", "prefer-dynamic",
    # "-Z", "pre-link-arg=-pthread",
    "-C", "link-arg=-pthread",
    "-C", "link-arg=-fopenmp",
    # "-C", "link-arg=-LC:/Octave/Octave-4.2.1/lib64/gcc/x86_64-w64-mingw32/4.9.4",
    # "-C", "link-arg=--sysroot=C:/Octave/Octave-4.2.1",
    # "-Z", "pre-link-args=-LC:/Octave/Octave-4.2.1/lib",
    # "-Z", "pre-link-args=-LC:\\Octave\\Octave-4.2.1\\lib",
    # "-C", "link-arg=--verbose",
    # "-C", "link-arg=-v",
    # "-C", "link-arg=-Wl,--verbose",
    # "-Z", "print-link-args",
]

[target.x86_64-pc-windows-gnu]
linker = "C:/Octave/Octave-4.2.1/bin/gcc.exe"
# rustflags = [
#     "-C", "link-arg=-Wl,--verbose",
# ]

# [term]
# verbose = true

I'm trying to build a library for Octave with Rust.