From a01e84300ec1ab2c991c978f71f0db05cfb2ad64 Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Thu, 26 May 2022 15:52:57 +0000
Subject: [PATCH] cmake: fix detecting libidn2

Without this patch, libidn2 detection doesn't even seem to be
attempted. With this patch, cmake can be configured to pick it
up and enable it. Necessary configuration remains manual and
differs from most other dependencies.

If you are aware of a better fix, we're glad hearing about it
in a new Issue.

Closes #8917
---
 CMakeLists.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 621ae19d82..ee0cce08ab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -675,11 +675,12 @@ if(NOT CURL_DISABLE_LDAPS)
   check_include_file_concat("ldapssl.h"  HAVE_LDAPSSL_H)
 endif()
 
-# Check for idn
+# Check for idn2
 option(USE_LIBIDN2 "Use libidn2 for IDN support" ON)
-set(HAVE_LIBIDN2 OFF)
 if(USE_LIBIDN2)
   check_library_exists_concat("idn2" idn2_lookup_ul HAVE_LIBIDN2)
+else()
+  set(HAVE_LIBIDN2 OFF)
 endif()
 
 if(WIN32)