diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_win_defs.h b/compiler-rt/lib/sanitizer_common/sanitizer_win_defs.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_win_defs.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_win_defs.h
@@ -43,6 +43,8 @@
 #define STRINGIFY_(A) #A
 #define STRINGIFY(A) STRINGIFY_(A)
 
+#if !SANITIZER_GO
+
 // ----------------- A workaround for the absence of weak symbols --------------
 // We don't have a direct equivalent of weak symbols when using MSVC, but we can
 // use the /alternatename directive to tell the linker to default a specific
@@ -158,5 +160,15 @@
 //     return a >= b;
 //   }
 //
+
+#else // SANITIZER_GO
+
+// Go neither needs nor wants weak references.
+// The shenanigans above don't work for gcc.
+# define WIN_WEAK_EXPORT_DEF(ReturnType, Name, ...)                            \
+  extern "C" ReturnType Name(__VA_ARGS__)
+
+#endif // SANITIZER_GO
+
 #endif // SANITIZER_WINDOWS
 #endif // SANITIZER_WIN_DEFS_H
diff --git a/compiler-rt/lib/tsan/go/build.bat b/compiler-rt/lib/tsan/go/build.bat
--- a/compiler-rt/lib/tsan/go/build.bat
+++ b/compiler-rt/lib/tsan/go/build.bat
@@ -31,6 +31,9 @@
   ..\..\sanitizer_common\sanitizer_flag_parser.cpp ^
   ..\..\sanitizer_common\sanitizer_symbolizer.cpp ^
   ..\..\sanitizer_common\sanitizer_termination.cpp ^
+  ..\..\sanitizer_common\sanitizer_file.cpp ^
+  ..\..\sanitizer_common\sanitizer_symbolizer_report.cpp ^
+  ..\rtl\tsan_external.cpp ^
   > gotsan.cpp
 
 gcc ^
@@ -46,6 +49,9 @@
   -fno-exceptions ^
   -fno-rtti ^
   -DSANITIZER_GO=1 ^
+  -DWINVER=0x0600 ^
+  -D_WIN32_WINNT=0x0600 ^
+  -DGetProcessMemoryInfo=K32GetProcessMemoryInfo ^
   -Wno-error=attributes ^
   -Wno-attributes ^
   -Wno-format ^