From c60042fe09dec5b220d65ad34c674b1fd9346e12 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 2 May 2019 10:42:23 +0200
Subject: 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
Closes #3830
---
 configure.ac | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 00fef9489..f1c48b165 100755
--- a/configure.ac
+++ b/configure.ac
@@ -1889,6 +1889,14 @@ 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"$OPT_SSL" != Xoff &&
+  test X"$OPT_SSL" != Xno &&
+  test "$OPENSSL_ENABLED" != "1"; then
+  AC_MSG_NOTICE([OPT_SSL: $OPT_SSL])
+  AC_MSG_NOTICE([OPENSSL_ENABLED: $OPENSSL_ENABLED])
+  AC_MSG_ERROR([--with-ssl was given but OpenSSL could not be detected])
+fi
+
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