[telemetry] convert bitmaptools to use gyp

tools/telemetry/telemetry/core/build_extension.py

Index: tools/telemetry/telemetry/core/build_extension.py
diff --git a/tools/telemetry/telemetry/core/build_extension.py b/tools/telemetry/telemetry/core/build_extension.py
index 38a635fc4c24ce1423009e5b8725ae74308cfe03..201563923c13199024ae3ff662a8faff7b0ee1e5 100644
--- a/tools/telemetry/telemetry/core/build_extension.py
+++ b/tools/telemetry/telemetry/core/build_extension.py
@@ -2,6 +2,10 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import os
+import sys
+import tempfile
+
 
 def _FixDistutilsMsvcCompiler():
   # To avoid runtime mismatch, distutils should use the compiler which was used
@@ -12,8 +16,9 @@ def _FixDistutilsMsvcCompiler():
   for version in [msvc9compiler.get_build_version(), 9.0, 10.0, 11.0, 12.0]:
     msvc9compiler.VERSION = version
     try:
-      msvc9compiler.MSVCCompiler().initialize()
-      return
+      compiler = msvc9compiler.MSVCCompiler()
+      compiler.initialize()
+      return compiler
     except Exception:
       pass
   raise Exception('Could not initialize MSVC compiler for distutils.')
@@ -22,8 +27,6 @@ def _FixDistutilsMsvcCompiler():
 def BuildExtension(sources, output_dir, extension_name):
   from distutils import log
   from distutils.core import Distribution, Extension
-  import os
-  import tempfile
 
   build_dir = tempfile.mkdtemp()
   # Source file paths must be relative to current path.
@@ -52,9 +55,27 @@ def BuildExtension(sources, output_dir, extension_name):
 
 
 if __name__ == '__main__':
-  import sys
-  assert len(sys.argv) > 3, (
-    'Usage: build.py source-files output-dir ext-name\n'
-    'got: ' + str(sys.argv)
-  )
-  BuildExtension(sys.argv[1:-2], sys.argv[-2], sys.argv[-1])
+  from distutils import sysconfig
+
+  if os.name == 'nt':
+    msvc_compiler = _FixDistutilsMsvcCompiler()
+    cflags = ' '.join(msvc_compiler.compile_options)
+    ldflags = ' '.join(msvc_compiler.ldflags_shared)
+  else:
+    cflags = sysconfig.get_config_var('CFLAGS')
+    ldflags = sysconfig.get_config_var('LDFLAGS')
+    # Remove redundant flag in C++ builds.
+    cflags = cflags.replace('-Wstrict-prototypes', '')
+
+  cmd = sys.argv[1] if len(sys.argv) > 1 else ''
+  values = {
+    'cflags': cflags,
+    'ldflags': ldflags,
+    'include_dirs': sysconfig.get_python_inc(),
+  }
+  try:
+    print values[cmd]
+  except KeyError:
+    print >> sys.stderr, 'Usage: %s (%s)' % (
+        sys.argv[0], '|'.join(values.keys()))
+    sys.exit(-1)