Adding support for msys.
diff --git a/binding.gyp b/binding.gyp
index 8efc8a2..492b75f 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -519,6 +519,7 @@
'src/core/lib/support/stack_lockfree.c',
'src/core/lib/support/string.c',
'src/core/lib/support/string_posix.c',
+ 'src/core/lib/support/string_util_win32.c',
'src/core/lib/support/string_win32.c',
'src/core/lib/support/subprocess_posix.c',
'src/core/lib/support/subprocess_windows.c',
@@ -533,6 +534,7 @@
'src/core/lib/support/time_precise.c',
'src/core/lib/support/time_win32.c',
'src/core/lib/support/tls_pthread.c',
+ 'src/core/lib/support/tmpfile_msys.c',
'src/core/lib/support/tmpfile_posix.c',
'src/core/lib/support/tmpfile_win32.c',
'src/core/lib/support/wrap_memcpy.c',