From 45198e5235f4b724277665b242cf855a0ff4518b Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Tue, 2 Apr 2024 16:06:10 +0200
Subject: Make sure we use C++ 11

It's rare we use a compiler that has anything older as a default, but it
does happen sometimes. So make sure to guarantee this so we can start
using more modern constructs.
---
 CMakeLists.txt                  | 3 ++-
 unix/xserver/hw/vnc/Makefile.am | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba6b3203..b9482b1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -69,8 +69,9 @@ IF(CMAKE_BUILD_TYPE MATCHES Debug)
   add_definitions(-D_DEBUG)
 ENDIF()
 
-# Make sure we get a sane C version
+# Make sure we get a sane C and C++ version
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
 
 # Tell the compiler to be stringent
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wformat=2 -Wvla")
diff --git a/unix/xserver/hw/vnc/Makefile.am b/unix/xserver/hw/vnc/Makefile.am
index f9ed19d9..402e37db 100644
--- a/unix/xserver/hw/vnc/Makefile.am
+++ b/unix/xserver/hw/vnc/Makefile.am
@@ -14,6 +14,8 @@ AM_CPPFLAGS = \
 	-I$(TIGERVNC_SRCDIR)/unix/common \
 	$(DIX_CFLAGS)
 
+AM_CXXFLAGS = -std=gnu++11
+
 noinst_LTLIBRARIES = libvnccommon.la
 
 HDRS = vncExtInit.h vncHooks.h \
-- 
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