gyp build of skfiddle apps, take 2

experimental/webtry/gyp_for_webtry

Index: experimental/webtry/gyp_for_webtry
diff --git a/experimental/webtry/gyp_for_webtry b/experimental/webtry/gyp_for_webtry
new file mode 100755
index 0000000000000000000000000000000000000000..374c02abe2e3b99692727bf9c3dd566642da33e0
--- /dev/null
+++ b/experimental/webtry/gyp_for_webtry
@@ -0,0 +1,43 @@
+#!/usr/bin/python
+import os
+import sys
+
+script_dir = os.path.dirname(__file__)
+
+skia_src = os.path.abspath(os.environ.get('SKIA_SRC', os.path.join( script_dir, "..", "..")))
+gyp_source_dir = os.path.join(skia_src, 'third_party', 'externals', 'gyp')
+
+WEBTRY_CACHE_DEFAULT = os.path.join(script_dir, "..", "..", "..", "cache")
+WEBTRY_INOUT_DEFAULT = os.path.join(script_dir, "..", "..", "..", "inout")
+
+sys.path.insert(0, os.path.abspath(os.path.join(gyp_source_dir, 'pylib')))
+import gyp
+
+if __name__ == '__main__':
+  if len(sys.argv) < 2:
+    print "Usage: gyp_for_webtry [code hash value]"
+    sys.exit(-1) 
+
+  args = sys.argv[2:]
+
+  if not os.environ.get('GYP_GENERATORS'):
+    os.environ['GYP_GENERATORS'] = 'ninja'
+
+  args.append('--check')
+  args.append('-I%s/gyp/common.gypi' % skia_src)
+  args.extend(['--depth', '.'])
+  webtry_cache_dir = os.path.abspath(os.environ.get('WEBTRY_CACHE', WEBTRY_CACHE_DEFAULT))
+  webtry_inout_dir = os.path.abspath(os.environ.get('WEBTRY_INOUT', WEBTRY_INOUT_DEFAULT))
+
+  args.append('-Goutput_dir=%s' % webtry_inout_dir)
+
+  args.append(os.path.join(webtry_cache_dir, '%s.gyp' % sys.argv[1]))
+
+  # gyp is really picky about the current working directory having src/ under it
+  os.chdir(webtry_cache_dir)
+
+  os.environ['CC'] = '../../skia/experimental/webtry/safec'
+  os.environ['CXX'] = '../../skia/experimental/webtry/safec++'
+  os.environ['LD'] = '../../skia/experimental/webtry/safec++'
+
+  sys.exit(gyp.main(args))