Can't Install Gems on Os X "El Capitan"

Can't install gems on OS X El Capitan

Disclaimer: @theTinMan and other Ruby developers often point out not to use sudo when installing gems and point to things like RVM. That's absolutely true when doing Ruby development. Go ahead and use that.

However, many of us just want some binary that happens to be distributed as a gem (e.g. fakes3, cocoapods, xcpretty …). I definitely don't want to bother with managing a separate ruby. Here are your quicker options:

Option 1: Keep using sudo

Using sudo is probably fine if you want these tools to be installed globally.

The problem is that these binaries are installed into /usr/bin, which is off-limits since El Capitan. However, you can install them into /usr/local/bin instead. That's where Homebrew install its stuff, so it probably exists already.

sudo gem install fakes3 -n/usr/local/bin

Gems will be installed into /usr/local/bin and every user on your system can use them if it's in their PATH.

Option 2: Install in your home directory (without sudo)

The following will install gems in ~/.gem and put binaries in ~/bin (which you should then add to your PATH).

gem install fakes3 --user-install -n~/bin

Make it the default

Either way, you can add these parameters to your ~/.gemrc so you don't have to remember them:

gem: -n/usr/local/bin

i.e. echo "gem: -n/usr/local/bin" >> ~/.gemrc

or

gem: --user-install -n~/bin

i.e. echo "gem: --user-install -n~/bin" >> ~/.gemrc

(Tip: You can also throw in --no-document to skip generating Ruby developer documentation.)

Having issues installing ruby gems after latest OS X El Capitan update

Don't forget that installing things into the system Ruby requires sudo privileges, /Library is usually restricted access.

Installing your own personal Ruby with rvm or rbenv avoids all this.

Can't install thrift gem on OS X El Capitan

I have a solution for you! Hopefully.

Had this same problem the other day.

The problem is in the clang compiler that El Capitan comes bundled with. I'm sure it screws up other issues but this is one point that I had a lot of issues with.

Try running the following command and let me know how it goes!

gem install thrift -- --with-cppflags=\"-D_FORTIFY_SOURCE=0 -Wno-shift-negative-value\"

gem install rmagick fails on OS X El Capitan

Fixed it.

The magic command to run is this:

xcode-select --install

Getting an error trying to install a particular gem 'oily_png (1.2.0)' MAC OS X El Capitan

On a Mac anytime you upgrade Xcode or the operating system, there appears to be a chance of the command line tools being removed.

 xcode-select --install 

in the terminal window, will install the tools, this can also be done inside the xcode application.

[~] xcode-select -h
Usage: xcode-select [options]

Print or change the path to the active developer directory. This directory
controls which tools are used for the Xcode command line tools (for example,
xcodebuild) as well as the BSD development commands (such as cc and make).

Options:
  -h, --help                  print this help message and exit
  -p, --print-path            print the path of the active developer directory
  -s <path>, --switch <path>  set the path for the active developer directory
  --install                   open a dialog for installation of the command line developer tools
  -v, --version               print the xcode-select version
  -r, --reset                 reset to the default command line tools path

if you have more than one set of tools installed (such as beta version) the -s, --switch flag is also helpful to get it pointed to one you want to use (or if the version it was pointed to was removed)

Install therubyracer gem on OSX 10.11 El Capitan

1. Install xcode through app store
2. Install 'command line tools' for xcode (xcode-select --install)
3. If using rbenv, after installing ruby you needed rbenv rehash

4. Assuming you have run gem install bundler and got errors, remove your mess:

   gem uninstall libv8
   gem uninstall therubyracer
   brew rm v8
   

5. Install gcc4.2

   brew tap homebrew/dupes
   brew install apple-gcc42
   

6. Install v8

   brew tap homebrew/versions
   brew install v8-315
   brew link --force v8-315
   

7. Install gems

   gem install libv8 -- --with-system-v8
   gem install therubyracer
   

   if you get dyld: lazy symbol binding failed: Symbol not found, @rpbaltazar suggests an alternative:

   bundle config --local build.libv8 --with-cxx=/usr/local/bin/g++-4.2
   bundle install
   

gem update/install operation not permitted since el capitan. how to set default path

Having the same problems, found this:

• Boot into the Recovery HD by restarting whilst holding ⌘R.
• Open Terminal (from the Utilities menu).
• Run the following command in Terminal:
  csrutil disable
• Restart

source: https://georgegarside.com/blog/osx/package-incompatible-installer/

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