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Editorial Team
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Asked: 2026-06-17T12:19:28+00:00

Clean Mountain Lion install installed XCode 4.5 from the app store installed the command-line

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  1. Clean Mountain Lion install
  2. installed XCode 4.5 from the app store
  3. installed the command-line tools
  4. installed home brew
  5. brew doctor is happy
  6. installed RVM
  7. rvm install 1.9.3
    • installer asked for more brews, installed the following:
      1. apple-gcc42
      2. autoconf
      3. automake
      4. libksba

install complete, everything looks good…

maximus:~$ gem install json
Building native extensions.  This could take a while...
ERROR:  Error installing json:
  ERROR: Failed to build gem native extension.

        /Users/mmoser/.rvm/rubies/ruby-1.9.3-p362/bin/ruby extconf.rb
creating Makefile

make
compiling generator.c
generator.c:369: warning: unused parameter ‘self’
generator.c:423: warning: unused parameter ‘self’
generator.c:759: warning: unused parameter ‘Vstate’
generator.c:773: warning: unused parameter ‘Vstate’
generator.c:773: warning: unused parameter ‘state’
generator.c:773: warning: unused parameter ‘obj’
generator.c:778: warning: unused parameter ‘Vstate’
generator.c:778: warning: unused parameter ‘state’
generator.c:778: warning: unused parameter ‘obj’
generator.c:783: warning: unused parameter ‘Vstate’
generator.c:783: warning: unused parameter ‘state’
generator.c:783: warning: unused parameter ‘obj’
generator.c:788: warning: unused parameter ‘Vstate’
generator.c:788: warning: unused parameter ‘state’
generator.c:793: warning: unused parameter ‘Vstate’
generator.c:793: warning: unused parameter ‘state’
generator.c:799: warning: unused parameter ‘Vstate’
linking shared-object json/ext/generator.bundle

make install
/Users/mmoser/.rvm/scripts/install -c -m 0755 generator.bundle /Users/mmoser/.rvm/gems/ruby-1.9.3-p362/gems/json-1.7.6/lib/json/ext
/Users/mmoser/.rvm/scripts/install: line 33: /Users/mmoser/.rvm/gems/ruby-1.9.3-p362/gems/json-1.7.6/ext/json/ext/generator/scripts/functions/installer: No such file or directory
/Users/mmoser/.rvm/scripts/install: line 39: install_setup: command not found
Unrecognized option: -c
/Users/mmoser/.rvm/scripts/install: line 84: install_usage: command not found
make: *** [/Users/mmoser/.rvm/gems/ruby-1.9.3-p362/gems/json-1.7.6/lib/json/ext/generator.bundle] Error 1


Gem files will remain installed in /Users/mmoser/.rvm/gems/ruby-1.9.3-p362/gems/json-1.7.6 for inspection.
Results logged to /Users/mmoser/.rvm/gems/ruby-1.9.3-p362/gems/json-1.7.6/ext/json/ext/generator/gem_make.out

I’m pulling my hair out. Can anyone explain this?

More info:

xcode

maximus:~$ xcode-select --print-path
/Applications/Xcode.app/Contents/Developer

maximus:~$ la /Applications/Xcode.app/Contents/Developer/usr/bin/gcc* && la /Applications/Xcode.app/Contents/Developer/usr/bin/llvm-gcc*
lrwxr-xr-x 1 root wheel 12B Dec 24 19:22 /Applications/Xcode.app/Contents/Developer/usr/bin/gcc -> llvm-gcc-4.2
lrwxr-xr-x 1 root wheel 32B Dec 24 19:22 /Applications/Xcode.app/Contents/Developer/usr/bin/llvm-gcc -> ../llvm-gcc-4.2/bin/llvm-gcc-4.2
lrwxr-xr-x 1 root wheel 32B Dec 24 19:22 /Applications/Xcode.app/Contents/Developer/usr/bin/llvm-gcc-4.2 -> ../llvm-gcc-4.2/bin/llvm-gcc-4.2

/usr/bin

maximus:~$ la /usr/bin/gcc* && la /usr/bin/llvm-gcc*
lrwxr-xr-x 1 root wheel 12B Jan 11 19:23 /usr/bin/gcc -> llvm-gcc-4.2
lrwxr-xr-x 1 root wheel 12B Jan 11 19:23 /usr/bin/gcc-4.2 -> llvm-gcc-4.2
lrwxr-xr-x 1 root wheel 32B Dec 25 08:24 /usr/bin/llvm-gcc -> ../llvm-gcc-4.2/bin/llvm-gcc-4.2
lrwxr-xr-x 1 root wheel 32B Jan 11 19:19 /usr/bin/llvm-gcc-4.2 -> ../llvm-gcc-4.2/bin/llvm-gcc-4.2

/usr/local/bin

maximus:~$ la /usr/local/bin/gcc* && la /usr/local/bin/llvm-gcc*
lrwxr-xr-x 1 mmoser admin 46B Jan 11 21:14 /usr/local/bin/gcc-4.2 -> ../Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2
ls: /usr/local/bin/llvm-gcc*: No such file or directory

versions

maximus:~$ gcc --version
i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

maximus:~$ gcc-4.2 --version
i686-apple-darwin11-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

bash_profile contains (This is what is bringing in the $HOME/.rvm/* paths ?)

# Load RVM
if [ -f $HOME/.rvm/scripts/rvm ]; then
  source $HOME/.rvm/scripts/rvm
fi

current echo $PATH

/Users/mmoser/.rvm/gems/ruby-1.9.3-p362/bin
/Users/mmoser/.rvm/gems/ruby-1.9.3-p362@global/bin
/Users/mmoser/.rvm/rubies/ruby-1.9.3-p362/bin
/Users/mmoser/.rvm/bin
/usr/bin
/bin
/usr/sbin
/sbin
/usr/local/bin
/Users/mmoser
/Users/mmoser/scripts
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1 Answer

  1. Editorial Team

    it looks like you have /Users/mmoser/.rvm/scripts/ in your PATH, this does not happen by accident – you had to add it manually, please remove it and install the gem again.

    It is also required to reinstall ruby because INSTALL was recorded in ruby:

    $ rvm config-get INSTALL
/usr/bin/install -c

    So run:

    rvm reinstall all
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