Error Message

Building native extensions.  This could take a while...
ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
    ERROR: Failed to build gem native extension.

        /Users/james/.rvm/rubies/ruby-1.9.2-p136/bin/ruby extconf.rb
creating Makefile
CFLAGS='-isysroot /Applications/Xcode.app/Contents/Developer/SDKs/MacOSX10.7.sdk -mmacosx-version-min=10.7 -mdynamic-no-pic -std=gnu99 -Os -pipe -Wmissing-prototypes -Wreturn-type -Wmissing-braces -Wparentheses -Wswitch -Wunused-function -Wunused-label -Wunused-parameter -Wunused-variable -Wunused-value -Wuninitialized -Wunknown-pragmas -Wshadow -Wfour-char-constants -Wsign-compare -Wnewline-eof -Wconversion -Wshorten-64-to-32 -Wglobal-constructors -pedantic' /usr/bin/clang -isysroot /Applications/Xcode.app/Contents/Developer/SDKs/MacOSX10.7.sdk -mmacosx-version-min=10.7 -mdynamic-no-pic -std=gnu99 -dead_strip -framework CoreServices -o '/Users/james/.rvm/gems/ruby-1.9.2-p136@aep/gems/rb-fsevent-0.4.3.1/bin/fsevent_watch' fsevent/fsevent_watch.c
fsevent/fsevent_watch.c:1:10: fatal error: 'stdio.h' file not found
#include <stdio.h>
         ^
1 error generated.
extconf.rb:59:in `<main>': Compilation of fsevent_watch failed (see README) (RuntimeError)


Gem files will remain installed in /Users/james/.rvm/gems/ruby-1.9.2-p136@aep/gems/rb-fsevent-0.4.3.1 for inspection.
Results logged to /Users/james/.rvm/gems/ruby-1.9.2-p136@aep/gems/rb-fsevent-0.4.3.1/ext/gem_make.out