OS-X, Rails: “Failed to build gem native extension”

Question

I\'m stuck trying to install rails on my mac. I have OS X 10.6.8 and I have confirmed that I have Ruby, version 1.8.7

I ran sudo gem update and su

Answer 1

There are two possible reasons for the fail:

1. PRIMARY REASON: Missing Xcode Command Line Tools

Verifying Xcode Command Line Tools Installation manually: Check for presence of "/usr/include/iconv.h" (if absent=>Missing or improperly installed Xcode CLT)

Installing Xcode CLT: Try running xcode-select --install on terminal and follow the instructions. If it fails, open Xcode.app, select from menu "Xcode" - "Open Developer Tool" - "More Developer Tools" to open the developer site, download the installer for your OS version and run it.

2. SECONDARY REASON(if 1. fails): Version issues Try upgrading the ruby version using rbenv.

Hope it helps!