skip installing on jruby

1 files changed, 29 insertions, 25 deletions

diff --git a/ext/libyajl2/extconf.rb b/ext/libyajl2/extconf.rb
index e1a2a5b..5119aa3 100644
--- a/ext/libyajl2/extconf.rb
+++ b/ext/libyajl2/extconf.rb
@@ -1,38 +1,42 @@
 #!/usr/bin/env ruby
 
-require 'mkmf'
-require 'rbconfig'
+if !defined?(RUBY_ENGINE) || RUBY_ENGINE == 'ruby' || RUBY_ENGINE == 'rbx'
 
-## the customer is always right, ruby is always compiled to be stupid
-$CFLAGS = ENV['CFLAGS'] if ENV['CFLAGS']
-$LDFLAGS = ENV['LDFLAGS'] if ENV['LDFLAGS']
-RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']
+  require 'mkmf'
+  require 'rbconfig'
 
-## except if you're doing an unoptimized gcc install we're going to help you out a bit
-#if RbConfig::MAKEFILE_CONFIG['CC'] =~ /gcc|clang/
-#  $CFLAGS << " -O3" unless $CFLAGS[/-O\d/]
-#end
+  ## the customer is always right, ruby is always compiled to be stupid
+  $CFLAGS = ENV['CFLAGS'] if ENV['CFLAGS']
+  $LDFLAGS = ENV['LDFLAGS'] if ENV['LDFLAGS']
+  RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']
 
-pkg_config('yajl')
+  ## except if you're doing an unoptimized gcc install we're going to help you out a bit
+  #if RbConfig::MAKEFILE_CONFIG['CC'] =~ /gcc|clang/
+  #  $CFLAGS << " -O3" unless $CFLAGS[/-O\d/]
+  #end
 
-# yajl_tree.h is only in >= 2.0
-have_header("yajl/yajl_tree.h") || find_header("yajl/yajl_tree.h", "/usr/local/include")
+  pkg_config('yajl')
 
-# yajl_complete_parse is only in >= 2.0
-libyajl2_ok = have_library("yajl", "yajl_complete_parse", [ "yajl/yajl_parse.h" ])
+  # yajl_tree.h is only in >= 2.0
+  have_header("yajl/yajl_tree.h") || find_header("yajl/yajl_tree.h", "/usr/local/include")
 
-prefix=File.expand_path(File.join(File.dirname(__FILE__), "..", ".."))
+  # yajl_complete_parse is only in >= 2.0
+  libyajl2_ok = have_library("yajl", "yajl_complete_parse", [ "yajl/yajl_parse.h" ])
 
-unless libyajl2_ok
-  system "wget -O yajl-2.0.1.tar.gz http://github.com/lloyd/yajl/tarball/2.0.1"
-  system "tar xvf yajl-2.0.1.tar.gz"
-  Dir.chdir "lloyd-yajl-f4b2b1a"
-  system "./configure --prefix=#{prefix} > /tmp/libyajl.out"
-  system "make install >> /tmp/libyajl.out"
-  Dir.chdir ".."
-end
+  prefix=File.expand_path(File.join(File.dirname(__FILE__), "..", ".."))
+
+  unless libyajl2_ok
+    system "wget -O yajl-2.0.1.tar.gz http://github.com/lloyd/yajl/tarball/2.0.1"
+    system "tar xvf yajl-2.0.1.tar.gz"
+    Dir.chdir "lloyd-yajl-f4b2b1a"
+    system "./configure --prefix=#{prefix} > /tmp/libyajl.out"
+    system "make install >> /tmp/libyajl.out"
+    Dir.chdir ".."
+  end
 
-create_makefile("dummy")
+  create_makefile("dummy")
+
+end
 
 File.open("Makefile", "w") do |mf|
   mf.puts "# Dummy makefile for non-mri rubies"