install script doesn't recognize --docdir option

[kamathba]

ran ./configure && make && sudo make install

...
gen-install-script: CFG_LEGACY_MANIFEST_DIRS := rustlib,cargo
gen-install-script:
gen-install-script: validating arguments
gen-install-script:
install: error: Option '--docdir=/usr/local/share/doc/rust' is not recognized
/home/banjo/Work/dev/rust/mk/install.mk:21: recipe for target 'install' failed
make: *** [install] Error 1

Seems to be introduced by this commit, which was merged yesterday.

commit 5e9149d
Author: orbea ovariegata@yahoo.com
Date: Thu Sep 8 23:18:20 2016 -0700

Allow setting --docdir

[nodakai]

Had we tested make install on buildbot... #19698

[m10e]

This is preventing installs for me too. Not sure if it matters, but I got it building a cross compiler from master branch with custom install dir (configure --prefix).

[andoriyu]

@m10e you can always apply patch to rust-installer before it's merged upstream.

[m10e]

@andoriyu Sure, so it's definitely not urgent. I was just weighing in with a +1. Thanks for the tip though!

[orbea]

Ideally the merged pull request should of only been merged when both when both pull requests were ready to be merged followed by updating the submodule. Unfortunately it did not work out that way, sorry for any issues I have caused...

[cesarb]

I believe this should be tagged with the label regression-from-stable-to-nightly. @alexcrichton ?

[alexcrichton]

Ah, didn't realize it was a regression, but in that case indeed!