1 files changed, 61 insertions, 0 deletions
diff --git a/nacl/nacl-config.rb b/nacl/nacl-config.rb
new file mode 100644
index 0000000000..94a64aa711
--- /dev/null
+++ b/nacl/nacl-config.rb
@@ -0,0 +1,61 @@
+#!/usr/bin/ruby
+#
+# Copyright:: Copyright 2012 Google Inc.
+# License:: All Rights Reserved.
+# Original Author:: Yugui Sonoda (mailto:yugui@google.com)
+#
+# Convenient functions/constants for native client specific configurations.
+require 'rbconfig'
+
+module NaClConfig
+  config = RbConfig::CONFIG
+
+  cpu_nick = config['host_alias'].sub(/-gnu$|-newlib$/, '').sub(/-nacl$/, '')
+  ARCH = cpu_nick.sub('x86_64', 'x86-64').sub(/i.86/, 'x86-32')
+  HOST = ARCH.sub(/x86-../, 'x86_64') + '-nacl'
+
+  lib_suffix = config['host_cpu'][/i.86/] ? '32' : ''
+  PYTHON = config['PYTHON']
+  OBJDUMP = config['OBJDUMP']
+  SDK_ROOT = config['NACL_SDK_ROOT']
+  CREATE_NMF = [
+    File.join(SDK_ROOT, 'build_tools', 'nacl_sdk_scons', 'site_tools', 'create_nmf.py'),
+    File.join(SDK_ROOT, 'tools', 'create_nmf.py')
+  ].find{|path| File.exist?(path) }
+  HOST_LIB = File.join(SDK_ROOT, 'toolchain', config['NACL_TOOLCHAIN'], HOST, "lib#{lib_suffix}")
+
+  INSTALL_PROGRAM = config['INSTALL_PROGRAM']
+  INSTALL_LIBRARY = config['INSTALL_DATA']
+
+  SEL_LDR = [
+    File.join(SDK_ROOT, 'toolchain', config['NACL_TOOLCHAIN'], 'bin', "sel_ldr_#{cpu_nick}"),
+    File.join(SDK_ROOT, 'tools', "sel_ldr_#{cpu_nick}")
+  ].find{|path| File.executable?(path)}
+  IRT_CORE = [
+    File.join(SDK_ROOT, 'toolchain', config['NACL_TOOLCHAIN'], 'bin', "irt_core_#{cpu_nick}.nexe"),
+    File.join(SDK_ROOT, 'tools', "irt_core_#{cpu_nick}.nexe")
+  ].find{|path| File.executable?(path)}
+  RUNNABLE_LD = File.join(HOST_LIB, 'runnable-ld.so')
+
+  module_function
+
+  def newlib?
+    RbConfig::CONFIG['NACL_SDK_VARIANT'] == 'newlib'
+  end
+
+  def self.config(name)
+    if NaClConfig::const_defined?(name.upcase)
+      NaClConfig::const_get(name.upcase)
+    elsif NaClConfig::respond_to?(name) and NaClConfig::method(name).arity == 0
+      NaClConfig::send(name)
+    else
+      raise ArgumentError, "No such config: #{name}"
+    end
+  end
+end
+
+if $0 == __FILE__
+  ARGV.each do |arg|
+    puts NaClConfig::config(arg)
+  end
+end