From c718a5bee6a4edc074ad7c41c6270d8937ade75a Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Mon, 18 Nov 2024 11:58:06 -0500
Subject: [PATCH] Build sample apps using C++17 (see #3611)

---
 BUILD.gn | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/BUILD.gn b/BUILD.gn
index 4679dd35e..d4a3962c4 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1147,6 +1147,19 @@ config("libcef_dll_wrapper_config") {
       ldflags = [ "/STACK:0x800000" ]
     }
   }
+
+  # Build using the minimum C++ version supported by the CEF binary distribution.
+  # Chromium (and libcef) may build with a newer C++ version so this helps to
+  # avoid accidental usage of new/unsupported language features in sample apps.
+  # For Chromium defaults see //build/config/compiler/BUILD.gn.
+  if (is_win) {
+    cflags_cc = [ "/std:c++17" ]
+  } else {
+    cflags_cc = [ "-std=c++17" ]
+  }
+  if (is_mac) {
+    cflags_objcc = [ "-std=c++17" ]
+  }
 }
 
 # libcef_dll_wrapper target.