From 76a706fbde02f7f4c1aa5ec04e775af0a22baabb Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 2 May 2019 10:42:23 +0200
Subject: [PATCH] configure: error out if OpenSSL wasn't detected when asked
 for

If --with-ssl is used and configure still couldn't enable SSL this
creates an error instead of just silently ignoring the fact.

Suggested-by: Isaiah Norton
Fixes #3824
---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 00fef948918cb9..a5b8241918f5d0 100755
--- a/configure.ac
+++ b/configure.ac
@@ -1889,6 +1889,11 @@ if test -z "$ssl_backends" -o "x$OPT_SSL" != xno &&
   test -z "$ssl_msg" || ssl_backends="${ssl_backends:+$ssl_backends, }$ssl_msg"
 fi
 
+if test X"$with_ssl" != Xno &&
+  test "$OPENSSL_ENABLED" != "1"; then
+  AC_MSG_ERROR([--with-ssl was given but OpenSSL could not be detected])
+fi
+
 dnl **********************************************************************
 dnl Check for the random seed preferences
 dnl **********************************************************************