From c307e1c911dbbafb1673799212a4e5f4e211b9f8 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 18 Feb 2013 10:43:40 -0500
Subject: [PATCH] Tests/RunCMake: Allow tests to control build tree behavior

Teach the run_cmake to allow tests to set a custom test build directory.
Also add an option to skip removing the build directory.
---
 Tests/RunCMake/RunCMake.cmake | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index 40b98d426..00faa4ca7 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -26,8 +26,12 @@ function(run_cmake test)
     endif()
   endforeach()
   set(RunCMake_TEST_SOURCE_DIR "${top_src}")
-  set(RunCMake_TEST_BINARY_DIR "${top_bin}/${test}-build")
-  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  if(NOT RunCMake_TEST_BINARY_DIR)
+    set(RunCMake_TEST_BINARY_DIR "${top_bin}/${test}-build")
+  endif()
+  if(NOT RunCMake_TEST_NO_CLEAN)
+    file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  endif()
   file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
   if(NOT DEFINED RunCMake_TEST_OPTIONS)
     set(RunCMake_TEST_OPTIONS "")