Adding support for msys.
diff --git a/gRPC.podspec b/gRPC.podspec
index 82c5eaa..b3122dd 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -144,6 +144,7 @@
'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',
@@ -158,6 +159,7 @@
'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',