Show config messages from install-wild, install-mold

[sourcefrog]

Follows on from #37717 (comment)

@dvdsk suggested this but I didn't get to it in the previous PR.

Tested

; sudo rm /usr/local/bin/wild
; ./script/install-wild
Downloading from https://github.com/davidlattimore/wild/releases/download/0.6.0/wild-linker-0.6.0-x86_64-unknown-linux-gnu.tar.gz
Wild is installed to /usr/local/bin/wild

To make it your default, add or merge these lines into your ~/.cargo/config.toml:

[target.x86_64-unknown-linux-gnu]
linker = "clang"
rustflags = ["-C", "link-arg=--ld-path=wild"]

[target.aarch64-unknown-linux-gnu]
linker = "clang"
rustflags = ["-C", "link-arg=--ld-path=wild"]

; sudo rm /usr/local/bin/mold
; ./script/install-mold 2.34.0
Downloading from https://github.com/rui314/mold/releases/download/v2.34.0/mold-2.34.0-x86_64-linux.tar.gz
Mold is installed to /usr/local/bin/mold

To make it your default, add or merge these lines into your ~/.cargo/config.toml:

[target.'cfg(target_os = "linux")']
linker = "clang"
rustflags = ["-C", "link-arg=-fuse-ld=mold"]

Release Notes:

• N/A

[yara-blue]

@dvdsk suggested this but I didn't get to it in the previous PR.

Sorry I got greedy and wanted those shorter compile times :)

[yara-blue]

thanks for adding the config message to mold too!

[sourcefrog]

If you have a chat channel for developers, or Linux developers, maybe you can remind them all to apply this change, because by default the removal from in-tree config will have caused them to fall back to GNU ld.

[esthertrapadoux]

@dvdsk do you mind posting this in the Discord linux channel? I can but not sure I'd know what to write. 😞

[yara-blue]

@dvdsk do you mind posting this in the Discord linux channel? I can but not sure I'd know what to write. 😞

Oh damn, I forgot about all the open source contributors 😅. I'll copy what I put in slack.