From 8dc0c5a6999aaf4447b4ab6d7c02deecaec2df13 Mon Sep 17 00:00:00 2001
From: Sumeet Chhetri <sumeet.chhetri@gmail.com>
Date: Sun, 10 May 2020 19:56:21 +0530
Subject: [PATCH] cgen: C++ compiler support - Part 1

---
 vlib/v/gen/cgen.v     | 3 +++
 vlib/v/gen/cheaders.v | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index c2e045b190..bacf844feb 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -2884,6 +2884,9 @@ fn (mut g Gen) comp_if_to_ifdef(name string, is_comptime_optional bool) string {
 		'msvc' {
 			return '_MSC_VER'
 		}
+		'cplusplus' {
+			return '__cplusplus'
+		}
 		// other:
 		'debug' {
 			return '_VDEBUG'
diff --git a/vlib/v/gen/cheaders.v b/vlib/v/gen/cheaders.v
index 9a7e92a3e3..0c1e386ab2 100644
--- a/vlib/v/gen/cheaders.v
+++ b/vlib/v/gen/cheaders.v
@@ -65,8 +65,14 @@ const (
 	c_headers = '
 
 // c_headers
+typedef int (*qsort_callback_func)(const void*, const void*);
 #include <stdio.h>  // TODO remove all these includes, define all function signatures and types manually
 #include <stdlib.h>
+#ifdef __cplusplus
+#include <utility>
+#define _MOV std::move
+#include <execinfo.h>
+#endif
 
 //#include "fns.h"
 #include <signal.h>
@@ -370,11 +376,13 @@ typedef map map_int;
 typedef map map_string;
 typedef byte array_fixed_byte_300 [300];
 typedef byte array_fixed_byte_400 [400];
+#ifndef __cplusplus
 #ifndef bool
 	typedef int bool;
 	#define true 1
 	#define false 0
 #endif
+#endif
 
 '
 	bare_c_headers = '