https://bugs.gentoo.org/895694
https://github.com/open-telemetry/opentelemetry-cpp/pull/2423
https://github.com/open-telemetry/opentelemetry-cpp/commit/d1143ab37ef7a7e9bbc4289513dbd21b9fe134d2

From d1143ab37ef7a7e9bbc4289513dbd21b9fe134d2 Mon Sep 17 00:00:00 2001
From: Thomas-Barbier-1A <thomas.barbier@amadeus.com>
Date: Tue, 5 Dec 2023 10:54:00 +0100
Subject: [PATCH] [BUILD] 'uint8_t' not declared in this scope with gcc 13.2.1
 (#2423)

--- a/api/include/opentelemetry/trace/propagation/detail/hex.h
+++ b/api/include/opentelemetry/trace/propagation/detail/hex.h
@@ -4,6 +4,7 @@
 #pragma once
 
 #include <algorithm>
+#include <cstdint>
 #include <cstring>
 
 #include "opentelemetry/nostd/string_view.h"

https://github.com/open-telemetry/opentelemetry-cpp/commit/cfa130bb9200d6ce307b8e030426b983af562e8a

From cfa130bb9200d6ce307b8e030426b983af562e8a Mon Sep 17 00:00:00 2001
From: Andrew Stitcher <astitcher@apache.org>
Date: Sat, 20 May 2023 04:39:20 -0400
Subject: [PATCH] Missed include (#2143)

--- a/ext/include/opentelemetry/ext/http/common/url_parser.h
+++ b/ext/include/opentelemetry/ext/http/common/url_parser.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 #include <vector>
 #include "opentelemetry/nostd/string_view.h"