Getting Ruby 1.8.7 installed on Mountain Lion (10.8)

Question

I\'m having a lot of trouble getting Ruby 1.8.7 installed on my clean install of Mountain Lion. I\'ve looked around on Stack Overflow and don\'t see anything that specifical

Answer 1

I just figured it out! Please reference this question on SO

rvm can no longer install 1.8.7-p352 on Mac OS X Mountain Lion

rvm reinstall 1.8.7 --without-tcl --without-tk

Alternatively, try this installation order if you have Homebrew.

brew install tcl-tk

rvm reinstall 1.8.7

Answer 2

Just to follow up to Paul's post. I'm running OSX 10.8.2, had 1.9.3 install without issues, but 1.8.7-p370 also failed. I symlinked gcc-4.2:

sudo ln -s /usr/local/bin/gcc-4.2 /usr/bin/gcc-4.2

...successfully ran:

brew install tcl

...but tk failed:

brewk install tk

If you're in the same spot, this command did the trick:

CC=/usr/local/bin/gcc-4.2 rvm reinstall 1.8.7 --without-tk

Answer 3

Latest Xcode provides only clang - not GNU gcc, you need to install gcc-4.2 to be able to compile Ruby 1.8.7 properly, following command will show available options:

rvm requirements

currently only ruby 1.9.3-p125 and later has limited support for clang, but this is limited support, and still errors can be found.