Failed to install ruby 3.1.2 on Mac 12.4 (intel)

[karn18]

I tried to install ruby 3.1.2 on my mac with
rbenv install 3.1.2

and it produces error below

Generating RI format into /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/.ext/rdoc...


  Files:        917

  Classes:      983 ( 322 undocumented)
  Modules:      206 (  59 undocumented)
  Constants:   2200 ( 597 undocumented)
  Attributes:   984 ( 290 undocumented)
  Methods:     9458 (2161 undocumented)

  Total:      13831 (3429 undocumented)
   75.21% documented

  Elapsed: 25.3s

generating x86_64-darwin21-fake.rb
x86_64-darwin21-fake.rb updated
./miniruby -I./lib -I. -I.ext/common  ./tool/runruby.rb --extout=.ext  -- --disable-gems -r./x86_64-darwin21-fake ./tool/rbinstall.rb --make="make" --dest-dir="" --extout=".ext" --ext-build-dir="./ext" --mflags="" --make-flags="" --data-mode=0644 --prog-mode=0755 --installed-list .installed.list --mantype="doc"  --gnumake --install=all --rdoc-output=".ext/rdoc" --html-output=".ext/html"
installing binary commands:         /Users/karn/.rbenv/versions/3.1.2/bin
installing base libraries:          /Users/karn/.rbenv/versions/3.1.2/lib
installing arch files:              /Users/karn/.rbenv/versions/3.1.2/lib/ruby/3.1.0/x86_64-darwin21
installing pkgconfig data:          /Users/karn/.rbenv/versions/3.1.2/lib/pkgconfig
installing extension objects:       /Users/karn/.rbenv/versions/3.1.2/lib/ruby/3.1.0/x86_64-darwin21
installing extension objects:       /Users/karn/.rbenv/versions/3.1.2/lib/ruby/site_ruby/3.1.0/x86_64-darwin21
installing extension objects:       /Users/karn/.rbenv/versions/3.1.2/lib/ruby/vendor_ruby/3.1.0/x86_64-darwin21
installing extension headers:       /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/Users/karn/.rbenv/versions/3.1.2/include/ruby-3.1.0/x86_64-darwin21
/private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:240:in `mkdir': Permission denied @ dir_s_mkdir - /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/Users (Errno::EACCES)
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:240:in `fu_mkdir'
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:221:in `block (2 levels) in mkdir_p'
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:219:in `reverse_each'
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:219:in `block in mkdir_p'
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:211:in `each'
	from /private/var/folders/dx/8m24cx396bq1n4l2tl_1qrmm0000gn/T/ruby-build.20220601100715.60680.21gO3J/ruby-3.1.2/lib/fileutils.rb:211:in `mkdir_p'
	from ./tool/rbinstall.rb:218:in `makedirs'
	from ./tool/rbinstall.rb:331:in `prepare'
	from ./tool/rbinstall.rb:432:in `block in <main>'
	from ./tool/rbinstall.rb:1127:in `block in <main>'
	from ./tool/rbinstall.rb:1124:in `each'
	from ./tool/rbinstall.rb:1124:in `<main>'
make: *** [do-install-all] Error 1

BUILD FAILED (macOS 12.4 using ruby-build 20220426-3-g1038c07)

However I can install ruby version below 3.1.0 successfully.

[mislav]

It looks like this line is the culprit:

installing extension headers:       /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/Users/karn/.rbenv/versions/3.1.2/include/ruby-3.1.0/x86_64-darwin21

It looks like there are two paths joined in a single value, where the valid value only starts after /Users/karn/*.

I have no idea why this happens, but you can try installing while skipping docs generation:

RUBY_CONFIGURE_OPTS="$RUBY_CONFIGURE_OPTS --disable-install-doc" rbenv install ...

[karn18]

@mislav Thanks very much. I have installed ruby 3.1.2 successfully.

[BytesGuy]

@mislav Will there be a fix for this in a future version? I am also seeing the same problem, even when using RUBY_CONFIGURE_OPTS="$RUBY_CONFIGURE_OPTS --disable-install-doc" rbenv install 3.1.2

It only seems to be an issue with Ruby 3.1 on macOS 12.4 (Intel)

[karn18]

@BytesGuy Do you have this line export SDKROOT=$(xcrun -sdk macosx --show-sdk-path) in .barhrc or .zshrc?

For me, after i comment this line out, it works fine.

[thecocoa]

Thank you - commenting out SDKROOT= allowed 3.1.2 to be installed for me.

[rsmn]

I remove the export SDKROOT= line and added this to my ~/.zshrc

unset SDKROOT

Fixed.