1 files changed, 75 insertions, 0 deletions
diff --git a/python/servo/bootstrapper/windows_gnu.py b/python/servo/bootstrapper/windows_gnu.py
new file mode 100644
index 00000000000..794f1790cd1
--- /dev/null
+++ b/python/servo/bootstrapper/windows_gnu.py
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import sys
+import subprocess
+
+from base import BaseBootstrapper
+from packages import WINDOWS_GNU as deps
+
+
+class WindowsGnuBootstrapper(BaseBootstrapper):
+    '''Bootstrapper for msys2 based environments for building in Windows.'''
+
+    def __init__(self, **kwargs):
+        BaseBootstrapper.__init__(self, **kwargs)
+
+        if not self.which('pacman'):
+            raise NotImplementedError('The Windows bootstrapper only works with msys2 with pacman. Get msys2 at '
+                                      'http://msys2.github.io/')
+
+    def ensure_system_packages(self):
+        install_packages = []
+        for p in deps:
+            command = ['pacman', '-Qs', p]
+            if self.run_check(command):
+                install_packages += [p]
+        if install_packages:
+            install_packages(install_packages)
+
+    def install_system_packages(self, packages=deps):
+        self._ensure_package_manager_updated()
+        self.pacman_install(*packages)
+
+    def install_mobile_android_packages(self):
+        sys.exit('We do not support building Android on Windows. Sorry!')
+
+    def _update_package_manager(self):
+        self.pacman_update()
+
+    def run(self, command):
+        subprocess.check_call(command, stdin=sys.stdin)
+
+    def run_check(self, command):
+        return subprocess.call(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+    def pacman_update(self):
+        command = ['pacman', '--sync', '--refresh']
+        self.run(command)
+
+    def pacman_upgrade(self):
+        command = ['pacman', '--sync', '--refresh', '--sysupgrade']
+        self.run(command)
+
+    def pacman_install(self, *packages):
+        command = ['pacman', '--sync']
+        if not self.force:
+            command.append('--needed')
+        if not self.interactive:
+            command.append('--noconfirm')
+        command.extend(packages)
+        self.run(command)
+
+        # downgrade GCC to 5.4.0-1
+        gcc_type = ["gcc", "gcc-ada", "gcc-fortran", "gcc-libgfortran", "gcc-libs", "gcc-objc"]
+        gcc_version = "5.4.0-1"
+        mingw_url = "http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-{}-{}-any.pkg.tar.xz"
+        gcc_list = []
+        for gcc in gcc_type:
+            gcc_list += [mingw_url.format(gcc, gcc_version)]
+        downgrade_command = ['pacman', '-U']
+        if not self.interactive:
+            downgrade_command.append('--noconfirm')
+        downgrade_command.extend(gcc_list)
+        self.run(downgrade_command)