Install man page, completions by cargo install and drop GNU make support

[oech3]

At least for Arch Linux, offline build and splitting packaging process is recommended. i.e.

cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')" # Download crates needed for build
cargo build --frozen --release --all-features # offline build
cargo install --no-track --frozen --all-features --root "$pkgdir/usr/" --path . # packaging

However, the step to install everything is provided only by GNU make and manual installation of manpages,etc... needs many steps. I know cargo fetch before make is possible, but difficult to understand it.

Consider supporting to install them by cargo install --all-features. Consider also dropping support of GNU make since it internally calls cargo too many times already.

[sylvestre]

Patches welcome! I have more important things on the roadmap for now

[Ecordonnier]

Note that "Cargo install" is limited, by design. It does not support installing .so files (needed for libstdbuf.so).

[oech3]

Is this use case covered by make CARGOFLAGS e.g. CARGOFLAGS=--feat_external_libstdbuf? If so, there is a no reason to drop make.

[Ecordonnier]

Yes, I think it would be good that "make install" should install libstdbuf.so when feat_external_libstdbuf is enabled.

[oech3]

It seems make install CARGOFLAGS=--feat_external_libstdbuf SKIP_UTILS="runcon chcon" does not work on main branch yet. Is there any way to enable external libstdbuf with --features flag?

GNUmakefile has ${CARGO} build ${CARGOFLAGS} --features.

[Ecordonnier]

@oech3 I've sent https://github.com/uutils/coreutils/pull/8238 to cover this use-case.

[oech3]

Cannot cargo install symlink(hardkink) too without adding installer binary?

[oech3]

Reopening because GNUmakefile is buggy and has many duplicated operation with cargo. We might not have cargo native solution yet, but I think we should remove make too as same as onig.