From 6fb0bf8532338f4ab40f49d6d70484fd1d860a23 Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Tue, 10 Dec 2019 22:11:29 -0500
Subject: [PATCH] try to work around old std libraries.

---
 link.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/link.cpp b/link.cpp
index 7920f7f..a7fbf01 100644
--- a/link.cpp
+++ b/link.cpp
@@ -1,7 +1,6 @@
 /* c++17 */
 
 #include <algorithm>
-#include <charconv>
 #include <string>
 #include <string_view>
 #include <system_error>
@@ -9,6 +8,11 @@
 #include <utility>
 #include <vector>
 
+/* old version of stdlib have this stuff in utility */
+#if __has_include(<charconv>)
+#include <charconv>
+#endif
+
 #include <cstdint>
 #include <cassert>
 #include <cstdio>