From 30a94eecdb5c580d83a224848b78d186643e8105 Mon Sep 17 00:00:00 2001
From: Ruslan Baratov <ruslan_baratov@yahoo.com>
Date: Sat, 13 Sep 2014 19:09:59 +0400
Subject: [PATCH] ExternalProject: Fix download retry logic

Do not check file's hash in download script.  If hash will not match
command ``file(DOWNLOAD ...)`` will fail with FATAL_ERROR, ``cmake -P``
will exit with unsuccessful code, and the build will stop.  Leave hash
checking to the existing implementation in the verify step.
---
 Modules/ExternalProject.cmake | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index 27026f3c5..f8cda3c1d 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -628,11 +628,6 @@ function(_ep_write_downloadfile_script script_filename remote local timeout no_p
     set(show_progress "SHOW_PROGRESS")
   endif()
 
-  if("${hash}" MATCHES "${_ep_hash_regex}")
-    set(hash_args EXPECTED_HASH ${CMAKE_MATCH_1}=${CMAKE_MATCH_2})
-  else()
-    set(hash_args "# no EXPECTED_HASH")
-  endif()
   # check for curl globals in the project
   if(DEFINED CMAKE_TLS_VERIFY)
     set(tls_verify "set(CMAKE_TLS_VERIFY ${CMAKE_TLS_VERIFY})")
@@ -668,7 +663,6 @@ file(DOWNLOAD
   \"${remote}\"
   \"${local}\"
   ${show_progress}
-  ${hash_args}
   ${timeout_args}
   STATUS status
   LOG log)