Use mips64el toolchain

script/build.py

@@ -5,12 +5,13 @@ import os
 import subprocess
 import sys
 
-from lib.config import get_target_arch
+from lib.config import MIPS64EL_GCC, get_target_arch
 from lib.util import electron_gyp, import_vs_env
 
 
 CONFIGURATIONS = ['Release', 'Debug']
 SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
+VENDOR_DIR = os.path.join(SOURCE_ROOT, 'vendor')
 LIBCC_SOURCE_ROOT = os.path.join(SOURCE_ROOT, 'vendor', 'libchromiumcontent')
 LIBCC_DIST_MAIN = os.path.join(LIBCC_SOURCE_ROOT, 'dist', 'main')
 GCLIENT_DONE = os.path.join(SOURCE_ROOT, '.gclient_done')
@@ -40,9 +41,10 @@ def main():
                            get_target_arch()])
     subprocess.check_call([ninja, '-C', LIBCC_DIST_MAIN])
 
+  env = build_env()
   for config in args.configuration:
     build_path = os.path.join('out', config[0])
-    ret = subprocess.call([ninja, '-C', build_path, args.target])
+    ret = subprocess.call([ninja, '-C', build_path, args.target], env=env)
     if ret != 0:
       sys.exit(ret)
 
@@ -68,5 +70,20 @@ def parse_args():
   return parser.parse_args()
 
 
+def build_env():
+  env = os.environ.copy()
+  if get_target_arch() == "mips64el":
+    gcc_dir = os.path.join(VENDOR_DIR, MIPS64EL_GCC)
+    ldlib_dirs = [
+      gcc_dir + '/usr/x86_64-unknown-linux-gnu/mips64el-redhat-linux/lib',
+      gcc_dir + '/usr/lib64',
+      gcc_dir + '/usr/mips64el-redhat-linux/lib64',
+      gcc_dir + '/usr/mips64el-redhat-linux/sysroot/lib64',
+      gcc_dir + '/usr/mips64el-redhat-linux/sysroot/usr/lib64',
+    ]
+    env['LD_LIBRARY_PATH'] = os.pathsep.join(ldlib_dirs)
+    env['PATH'] = os.pathsep.join([gcc_dir + '/usr/bin', env['PATH']])
+  return env
+
 if __name__ == '__main__':
   sys.exit(main())

toolchain.gypi

@@ -5,6 +5,9 @@
     # Set this to true when building with Clang.
     'clang%': 1,
 
+    # Path to mips64el toolchain.
+    'make_mips64_dir%': 'vendor/gcc-4.8.3-d197-n64-loongson/usr',
+
     'variables': {
       # The minimum macOS SDK version to use.
       'mac_sdk_min%': '10.10',
@@ -30,8 +33,8 @@
     'use_lto_o2%': 0,
 
     'conditions': [
-      # Do not use Clang on Windows.
-      ['OS=="win"', {
+      # Do not use Clang on Windows or when building for mips64el.
+      ['OS=="win" or target_arch=="mips64el"', {
         'clang%': 0,
       }],  # OS=="win"
 
@@ -61,6 +64,9 @@
             ['target_arch=="x64"', {
               'sysroot%': '<(source_root)/vendor/debian_jessie_amd64-sysroot',
             }],
+            ['target_arch=="mips64el"', {
+              'sysroot%': '<(source_root)/vendor/debian_jessie_mips64-sysroot',
+            }],
           ],
         },
         # Copy conditionally-set variables out one scope.
@@ -130,6 +136,15 @@
       },
     }],  # clang==1
 
+    ['target_arch=="mips64el"', {
+      'make_global_settings': [
+        ['CC', '<(make_mips64_dir)/bin/mips64el-redhat-linux-gcc'],
+        ['CXX', '<(make_mips64_dir)/bin/mips64el-redhat-linux-g++'],
+        ['CC.host', '$(CC)'],
+        ['CXX.host', '$(CXX)'],
+      ],
+    }],
+
     # Specify the SDKROOT.
     ['OS=="mac"', {
       'target_defaults': {
@@ -140,7 +155,7 @@
     }],
 
     # Setup sysroot environment.
-    ['OS=="linux" and target_arch in ["arm", "ia32", "x64", "arm64"]', {
+    ['OS=="linux" and target_arch in ["arm", "ia32", "x64", "arm64", "mips64el"]', {
       'target_defaults': {
         'target_conditions': [
           ['_toolset=="target"', {