From ee55a4f70906a41db18df07de89383f0aa948c71 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 8 Feb 2011 15:22:50 -0500
Subject: [PATCH] libarchive: Use OpenSSL only if CMAKE_USE_OPENSSL (#11815)

OpenSSL is not part of the Linux Standard Base but its headers and
libraries may still be found at build time even though they may not be
available at runtime.  Use it only if explicitly allowed.
---
 Utilities/cmlibarchive/CMakeLists.txt | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Utilities/cmlibarchive/CMakeLists.txt b/Utilities/cmlibarchive/CMakeLists.txt
index 6472ec5589..08cda1e9c6 100644
--- a/Utilities/cmlibarchive/CMakeLists.txt
+++ b/Utilities/cmlibarchive/CMakeLists.txt
@@ -274,7 +274,11 @@ LA_CHECK_INCLUDE_FILE("windows.h" HAVE_WINDOWS_H)
 #
 # Find OpenSSL
 #
-FIND_PACKAGE(OpenSSL)
+IF(CMAKE_USE_OPENSSL)
+  FIND_PACKAGE(OpenSSL)
+ELSE()
+  SET(OPENSSL_FOUND 0)
+ENDIF()
 IF(OPENSSL_FOUND)
   INCLUDE_DIRECTORIES(${OPENSSL_INCLUDE_DIR})
   LIST(APPEND ADDITIONAL_LIBS ${OPENSSL_LIBRARIES})
@@ -296,7 +300,11 @@ LA_CHECK_INCLUDE_FILE("sha256.h" HAVE_SHA256_H)
 #
 # Find MD5/RMD160/SHA library
 #
-FIND_LIBRARY(CRYPTO_LIBRARY NAMES crypto)
+IF(CMAKE_USE_OPENSSL)
+  FIND_LIBRARY(CRYPTO_LIBRARY NAMES crypto)
+ELSE()
+  SET(CRYPTO_LIBRARY "")
+ENDIF()
 IF(CRYPTO_LIBRARY)
   LIST(APPEND ADDITIONAL_LIBS ${CRYPTO_LIBRARY})
 ELSE(CRYPTO_LIBRARY)