From c9e0173e6fb3ddefb43edaa5235eef2c7b31ad67 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 15 Oct 2015 09:34:46 -0400
Subject: ExternalProject: Always use CMake builtin FindGit (#15791)

Unset CMAKE_MODULE_PATH before calling find_package(Git) to ensure we do
not get a project-provided FindGit module that may not provide the
GIT_VERSION_STRING that we need.  We do not need to restore the value
explicitly because this occurs inside the _ep_add_download_command
function call scope.
---
 Modules/ExternalProject.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index dda45b9..c822bdb 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -1731,6 +1731,7 @@ function(_ep_add_download_command name)
       --non-interactive ${svn_trust_cert_args} ${svn_user_pw_args} ${src_name})
     list(APPEND depends ${stamp_dir}/${name}-svninfo.txt)
   elseif(git_repository)
+    unset(CMAKE_MODULE_PATH) # Use CMake builtin find module
     find_package(Git QUIET)
     if(NOT GIT_EXECUTABLE)
       message(FATAL_ERROR "error: could not find git for clone of ${name}")
-- 
cgit v0.12