Bootstrapping cargo - instructions unclear

[vojtechkral]

Hi,
the readme says:

If, however, you have neither rustc nor cargo previously installed you can run:

python -B src/etc/install-deps.py
./configure --local-rust-root="$PWD"/rustc
make
make install

This seems to be outdated.
The src/etc/install-deps.py doesn't seem to exist anymore.
Also, running configure says:

configure: CFG_CARGO            :=  
configure: error: needed, but unable to find any of: CFG_CARGO cargo

I'm wondering now how does one compile cargo on a system without cargo.
Thanks!

[alexcrichton]

Oh this is actually just a case where we forgot to update the docs! Cargo now requires a previous installation of Cargo/rustc to be present to build Cargo.

[starius]

What to do if I do not want to run cargo binaries not built by myself?

[alexcrichton]

Cargo requires a Rust compiler to build, and all Rust compilers should be coupled with Cargo, so you can run that Cargo you've got on hand.

[vojtechkral]

@starius There's @dhuseby/cargo-bootstrap

[starius]

@vojtechkral Thanks!
I wrote a script installing Rust and Cargo locally:
https://github.com/starius/config/blob/master/.bin/install-rust

[cnd]

all Rust compilers should be coupled with Cargo sounds problematic/complicated to package cargo and rust in modular way, seems like in source based distribution we will need some separate rust binary bootstrap with compiler and cargo and then rust package and cargo package will depend on that bootstrap package, I wish configure to be smarter and download binaries it needs in case when cargo is not installed but that's not correct way either since build process shouldn't ideally download anything so maybe it's just some another headache for packaging.

[carlorosati]

@alexcrichton

Cargo requires a Rust compiler to build, and all Rust compilers should be coupled with Cargo, so you can run that Cargo you've got on hand.

Which directory does cargo get installed into after ./configureing and make installing rustc?

find /tmp/cargo/../rustc-1.14.0/ -name cargo

revealed 3...

/tmp/cargo/../rustc-1.14.0/src/rust-installer/test/image3/bin/cargo
/tmp/cargo/../rustc-1.14.0/src/rust-installer/test/image-docdir2/share/doc/cargo
/tmp/cargo/../rustc-1.14.0/src/rust-installer/test/rust-installer-v2/test/image3/bin/cargo

Which one is it?

[alexcrichton]

@carlorosati right now make install in the rust repo doesn't install Cargo (but it will eventually!)

[carlorosati]

@alexcrichton Temporarily I will be using the cargo release tar.

As of now, I cannot find these release tars documented anywhere on the rust website(s). Is there any plans on documenting these or are they meant sheerly for developers.

[alexcrichton]

They're mostly just meant for developers currenlty

[Michele31415]

I understand that this is a bit old now but I just tried starius' script above and it failed thusly:

...
Submodules updated in 482.25 seconds
downloading https://static.rust-lang.org/dist/2019-12-18/rust-std-beta-sparcv9-sun-solaris.tar.gz
######################################################################### 100.0%
extracting /tmp/tmp.DYuS0c/build/cache/2019-12-18/rust-std-beta-sparcv9-sun-solaris.tar.gz
curl: (22) The requested URL returned error: 404

???