Added support for windows platforms using mingw.

Author: jarredholman

ext/libv8/builder.rb

@@ -16,6 +16,10 @@ def initialize
       @compiler = choose_compiler
     end
 
+    def make_target
+      "#{libv8_arch}.#{profile}"
+    end
+    
     def make_flags(*flags)
       profile = enable_config('debug') ? 'debug' : 'release'
 
@@ -42,7 +46,7 @@ def make_flags(*flags)
       # with it on
       flags << 'werror=no'
 
-      "#{libv8_arch}.#{profile} #{flags.join ' '}"
+      "#{make_target} #{flags.join ' '}"
     end
 
     def build_libv8!
@@ -53,7 +57,17 @@ def build_libv8!
         setup_build_deps!
         patch! *patch_directories_for(@compiler)
         print_build_info
-        puts `env CXX=#{@compiler} LINK=#{@compiler} #{make} #{make_flags}`
+
+        case RUBY_PLATFORM
+        when /mingw/
+          # use a script that will fix the paths in the generated Makefiles
+          # don't use make_flags otherwise it will trigger a rebuild of the Makefiles
+          `env CXX=#{@compiler} LINK=#{@compiler} bash #{PATCH_DIRECTORY}/mingw-generate-makefiles.sh`
+          puts `env CXX=#{@compiler} LINK=#{@compiler} make #{make_target}`
+          
+        else
+          puts `env CXX=#{@compiler} LINK=#{@compiler} #{make} #{make_flags}`
+        end
       end
       return $?.exitstatus
     end
@@ -96,8 +110,8 @@ def choose_compiler
     end
 
     def python_version
-      if system 'which python 2>&1 > /dev/null'
-        `python -c 'import platform; print(platform.python_version())'`.chomp
+      if `which python` =~ /python/
+        `python -c "import platform; print(platform.python_version())"`.chomp
       else
         "not available"
       end

ext/libv8/checkout.rb

@@ -15,7 +15,7 @@ def checkout!
 
       Dir.chdir(V8_Source) do
         `git fetch`
-        `git checkout #{Libv8::VERSION.gsub(/\.\d+$/,'')} -f`
+        `git checkout #{Libv8::VERSION.gsub(/\.\d+(\.rc\d+)?$/,'')} -f`
         `rm -f .applied_patches`
       end
 
@@ -31,7 +31,8 @@ def checkout!
         # --git-dir is needed for older versions of git and git-svn
         `git --git-dir=../../.git/modules/vendor/gyp/ svn init #{GYP_SVN} -Ttrunk`
         `git config --replace-all svn-remote.svn.fetch trunk:refs/remotes/origin/master`
-        `git checkout $(git --git-dir=../../.git/modules/vendor/gyp/ svn find-rev r#{rev} | tail -n 1) -f`
+        svn_rev = `git --git-dir=../../.git/modules/vendor/gyp/ svn find-rev r#{rev} | tail -n 1`
+        `git checkout #{svn_rev} -f`
       end
     end
 
@@ -40,6 +41,9 @@ def git?(dir)
     end
 
     def check_git_svn!
+      # msysgit provides git svn
+      return if RUBY_PLATFORM =~ /mingw/
+    
       unless system 'git help svn 2>&1 > /dev/null'
         fail "git-svn not installed!\nPlease install git-svn."
       end

ext/libv8/patcher.rb

@@ -47,6 +47,7 @@ def patch!(*additional_directories)
 
         (available_patches - applied_patches).each do |patch|
           `patch -p1 -N < #{patch}`
+          fail 'failed to apply patch' unless $?.success?
           f.puts patch
         end
       end

patches/mingw-generate-makefiles.sh

@@ -0,0 +1,97 @@
+#!/bin/sh
+# Copyright 2013 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Monkey-patch GYP.
+cat > build/gyp/gyp.mingw << EOF
+#!/usr/bin/env python
+
+# Copyright (c) 2009 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import sys
+
+# TODO(mark): sys.path manipulation is some temporary testing stuff.
+try:
+  import gyp
+except ImportError, e:
+  import os.path
+  sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), 'pylib'))
+  import gyp
+  
+def MonkeyBuildFileTargets(target_list, build_file):
+  """From a target_list, returns the subset from the specified build_file.
+  """
+  build_file = build_file.replace('/', '\\\\')
+  return [p for p in target_list if gyp.common.BuildFile(p) == build_file]
+gyp.common.BuildFileTargets = MonkeyBuildFileTargets
+
+import gyp.generator.make
+import os
+def Monkey_ITIP(self):
+  """Returns the location of the final output for an installable target."""
+  sep = os.path.sep
+  # Xcode puts shared_library results into PRODUCT_DIR, and some gyp files
+  # rely on this. Emulate this behavior for mac.
+  if (self.type == 'shared_library' and
+      (self.flavor != 'mac' or self.toolset != 'target')):
+    # Install all shared libs into a common directory (per toolset) for
+    # convenient access with LD_LIBRARY_PATH.
+    return '\$(builddir)%slib.%s%s%s' % (sep, self.toolset, sep, self.alias)
+  return '\$(builddir)' + sep + self.alias
+gyp.generator.make.MakefileWriter._InstallableTargetInstallPath = Monkey_ITIP
+
+if __name__ == '__main__':
+  sys.exit(gyp.main(sys.argv[1:]))
+EOF
+
+# Delete old generated Makefiles.
+find out -name '*.mk' -or -name 'Makefile*' -exec rm {} \;
+
+# Generate fresh Makefiles.
+mv build/gyp/gyp build/gyp/gyp.original
+mv build/gyp/gyp.mingw build/gyp/gyp
+make out/Makefile.ia32 out/Makefile.x64
+mv build/gyp/gyp build/gyp/gyp.mingw
+mv build/gyp/gyp.original build/gyp/gyp
+
+# Patch generated Makefiles: replace most backslashes with forward slashes,
+# fix library names in linker flags.
+FILES=$(find out -name '*.mk' -or -name 'Makefile*')
+for F in $FILES ; do
+  echo "Patching $F..."
+  cp $F $F.orig
+  cat $F.orig \
+    | sed -e 's|\([)a-zA-Z0-9]\)\\\([a-zA-Z]\)|\1/\2|g' \
+          -e 's|\([)a-zA-Z0-9]\)\\\\\([a-zA-Z]\)|\1/\2|g' \
+          -e 's|'%s/n'|'%s\\\\n'|g' \
+          -e 's|-lwinmm\.lib|-lwinmm|g' \
+          -e 's|-lws2_32\.lib|-lws2_32|g' \
+    > $F
+  rm $F.orig
+done