From 6b575dec8d393c4a38c587ee97afa068eeb4b432 Mon Sep 17 00:00:00 2001
From: Wayne Stambaugh <stambaughw@gmail.com>
Date: Sat, 3 Oct 2015 11:40:00 -0400
Subject: [PATCH] FindOpenSSL: Tolerate tabs in header while parsing version
 (#15765)

Tolerate tabs instead of spaces in the "# define" line.
---
 Modules/FindOpenSSL.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/FindOpenSSL.cmake b/Modules/FindOpenSSL.cmake
index a0f4c524b..3aea6954e 100644
--- a/Modules/FindOpenSSL.cmake
+++ b/Modules/FindOpenSSL.cmake
@@ -325,7 +325,7 @@ endfunction()
 if (OPENSSL_INCLUDE_DIR)
   if(OPENSSL_INCLUDE_DIR AND EXISTS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h")
     file(STRINGS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" openssl_version_str
-         REGEX "^# *define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-fA-F])+.*")
+         REGEX "^#[\t ]*define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-fA-F])+.*")
 
     # The version number is encoded as 0xMNNFFPPS: major minor fix patch status
     # The status gives if this is a developer or prerelease and is ignored here.