Force building with GCC 5

smessmer · smessmer · commit f70544cda181 · 2019-10-16T08:59:58.000-07:00
Make sure that we're building with GCC 5 everywhere Differential Revision: [D17953640](https://our.internmc.facebook.com/intern/diff/D17953640/) ghstack-source-id: 92013998 Pull Request resolved: #28098
diff --git a/c10/util/C++17.h b/c10/util/C++17.h
@@ -11,6 +11,12 @@
 #include <functional>
 #include <c10/macros/Macros.h>
 
+
+#if !defined(__clang__) && !defined(_MSC_VER) && defined(__GNUC__) && \
+  __GNUC__ < 5
+#error "You're trying to build PyTorch with a too old version of GCC. We need GCC 5 or later."
+#endif
+
 /*
  * This header adds some polyfills with C++14 and C++17 functionality
  */
