[lit] Remove stale test inputs before running check-lit

This should fix googletest-format test failures on the clang modules
buildbots, which have a stale copy of the OneTest script in the build
directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309432 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/lit/CMakeLists.txt b/utils/lit/CMakeLists.txt
index 709e16bda5b12ffffffee8ba379ebdcfc227e65f..d1b91a0c8d1762b9ce8f9c373849d6b72df3f523 100644 (file)
--- a/utils/lit/CMakeLists.txt
+++ b/utils/lit/CMakeLists.txt
@@ -10,6 +10,7 @@ configure_file("tests/lit.site.cfg.in" "lit.site.cfg" @ONLY)
 # configure time (i.e. `file(COPY ...)`) because this could lead to stale
 # tests being run.
 add_custom_target(prepare-check-lit
+  COMMAND ${CMAKE_COMMAND} -E remove_directory "${CMAKE_CURRENT_BINARY_DIR}/tests"
   COMMAND ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_SOURCE_DIR}/tests" "${CMAKE_CURRENT_BINARY_DIR}/tests"
   COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg" "${CMAKE_CURRENT_BINARY_DIR}/tests"
   COMMENT "Preparing lit tests"