From 89fd18b48e547f80a91a0266c1f2b5356bf088b0 Mon Sep 17 00:00:00 2001
From: Aliaksandr Averchanka <a.averchanka@axxonsoft.dev>
Date: Tue, 27 Jan 2026 11:57:48 +0300
Subject: [PATCH] nghttp2: provide common cm3p headers

---
 Utilities/cm3p/nghttp2/nghttp2.h                   | 11 +++++++++++
 Utilities/cmThirdParty.h.in                        |  1 +
 Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h |  2 +-
 3 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 Utilities/cm3p/nghttp2/nghttp2.h

diff --git a/Utilities/cm3p/nghttp2/nghttp2.h b/Utilities/cm3p/nghttp2/nghttp2.h
new file mode 100644
index 0000000000..581ec17f5b
--- /dev/null
+++ b/Utilities/cm3p/nghttp2/nghttp2.h
@@ -0,0 +1,11 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file LICENSE.rst or https://cmake.org/licensing for details.  */
+#pragma once
+
+/* Use the nghttp2 library configured for CMake.  */
+#include "cmThirdParty.h"
+#ifdef CMAKE_USE_SYSTEM_NGHTTP2
+#  include <nghttp2/nghttp2.h> // IWYU pragma: export
+#else
+#  include <cmnghttp2/lib/includes/nghttp2/nghttp2.h> // IWYU pragma: export
+#endif
diff --git a/Utilities/cmThirdParty.h.in b/Utilities/cmThirdParty.h.in
index 5c1d97733c..bc2fd11e0e 100644
--- a/Utilities/cmThirdParty.h.in
+++ b/Utilities/cmThirdParty.h.in
@@ -16,6 +16,7 @@
 #cmakedefine CMAKE_USE_SYSTEM_LIBRHASH
 #cmakedefine CMAKE_USE_SYSTEM_LIBUV
 #cmakedefine CMAKE_USE_SYSTEM_ZSTD
+#cmakedefine CMAKE_USE_SYSTEM_NGHTTP2
 
 /* Whether CMake is using OpenSSL library.  */
 #cmakedefine CMAKE_USE_OPENSSL
diff --git a/Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h b/Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h
index 65077dd516..3f31b8983e 100644
--- a/Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h
+++ b/Utilities/cmnghttp2/lib/includes/nghttp2/nghttp2.h
@@ -52,7 +52,7 @@ extern "C" {
 #include <sys/types.h>
 #include <stdarg.h>
 
-#include <nghttp2/nghttp2ver.h>
+#include "nghttp2ver.h"
 
 #ifdef NGHTTP2_STATICLIB
 #  define NGHTTP2_EXTERN