From 76e0196b1ef4692e583d35e7d6000d9ed6758885 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 24 Jun 2024 10:27:08 +0200
Subject: [PATCH] configure: require a QUIC library if nghttp3 is used

Instead of just silently disabling HTTP/3.

Reported-by: Matt Jolly
Fixes #13995
Closes #13999
---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index d844bbdfac..a766caf0f0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3231,6 +3231,11 @@ esac
 curl_http3_msg="no      (--with-nghttp3)"
 if test X"$want_nghttp3" != Xno; then
 
+  if test "x$USE_NGTCP2" != "x1" -a "x$USE_OPENSSL_QUIC" != "x1"; then
+    # without ngtcp2 or openssl quic, nghttp3 is of no use for us
+    AC_MSG_ERROR([nghttp3 enabled without a QUIC library; enable ngtcp2 or OpenSSL-QUIC])
+  fi
+
   dnl backup the pre-nghttp3 variables
   CLEANLDFLAGS="$LDFLAGS"
   CLEANCPPFLAGS="$CPPFLAGS"
-- 
2.47.3