[pstl] Initial integration with LLVM's CMake

Summary:
This commit adds a check-pstl CMake target that will run the tests
we currently have for pstl. Those tests are not using LLVM lit yet,
but switching them over should be a transparent change. With this
change, we can start relying on the `check-pstl` target for workflows
and CI.

Note that this commit purposefully does not support the pre-monorepo
layout (with subprojects in projects/), since LLVM is moving towards
the monorepo layout anyway.

Reviewers: jfb

Subscribers: mgorny, jkorous, dexonsmith, libcxx-commits, mclow.lists, rodgert

Differential Revision: https://reviews.llvm.org/D55963

llvm-svn: 349919

1 files changed, 0 insertions, 11 deletions

diff --git a/pstl/cmake/FindTBB.cmake b/pstl/cmake/FindTBB.cmake
index 654ee410451..e7b36367700 100644
--- a/pstl/cmake/FindTBB.cmake
+++ b/pstl/cmake/FindTBB.cmake
@@ -9,17 +9,6 @@
 
 include(FindPackageHandleStandardArgs)
 
-# Firstly search for TBB in config mode (i.e. search for TBBConfig.cmake).
-find_package(TBB QUIET CONFIG)
-if (TBB_FOUND)
-    find_package_handle_standard_args(TBB
-                                      REQUIRED_VARS TBB_IMPORTED_TARGETS
-                                      HANDLE_COMPONENTS
-                                      VERSION_VAR TBB_VERSION
-                                      CONFIG_MODE)
-    return()
-endif()
-
 if (NOT TBB_FIND_COMPONENTS)
     set(TBB_FIND_COMPONENTS tbb tbbmalloc)
     foreach (_tbb_component ${TBB_FIND_COMPONENTS})