Revert r256606 due to compiler-rt sanitizer bot failures

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@256614 91177308-0d34-0410-b5e6-96231b3b80d8

CMakeLists.txt

@@ -12,29 +12,20 @@ if(POLICY CMP0022)
   cmake_policy(SET CMP0022 NEW) # Required when interacting with LLVM and Clang
 endif()
 
+project(libcxx CXX C)
+
+set(PACKAGE_NAME libcxx)
+set(PACKAGE_VERSION trunk-svn)
+set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
+set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
+
 # Add path for custom modules
 set(CMAKE_MODULE_PATH
   "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
   "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
-   ${CMAKE_MODULE_PATH}
+  ${CMAKE_MODULE_PATH}
   )
 
-if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-  project(libcxx CXX C)
-  set(PACKAGE_NAME libcxx)
-  set(PACKAGE_VERSION trunk-svn)
-  set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
-  set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
-
-  # Configure for a standalone build
-  message(STATUS "Configuring for standalone build.")
-  set(LIBCXX_BUILT_STANDALONE 1)
-
-  # Find the LLVM sources and simulate LLVM CMake options.
-  include(HandleOutOfTreeLLVM)
-  handle_out_of_tree_llvm()
-endif()
-
 # Require out of source build.
 include(MacroEnsureOutOfSourceBuild)
 MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
@@ -42,6 +33,15 @@ MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
  build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
  )
 
+# Find the LLVM sources and simulate LLVM CMake options.
+include(HandleOutOfTreeLLVM)
+if (LIBCXX_BUILT_STANDALONE AND NOT LLVM_FOUND)
+  message(WARNING "UNSUPPORTED LIBCXX CONFIGURATION DETECTED: "
+                  "llvm-config not found and LLVM_PATH not defined.\n"
+                  "Reconfigure with -DLLVM_CONFIG=path/to/llvm-config "
+                  "or -DLLVM_PATH=path/to/llvm-source-root.")
+endif()
+
 #===============================================================================
 # Setup CMake Options
 #===============================================================================

cmake/Modules/HandleOutOfTreeLLVM.cmake

@@ -1,6 +1,4 @@
-
-
-macro(internal_find_llvm_parts)
+macro(find_llvm_parts)
 # Rely on llvm-config.
   set(CONFIG_OUTPUT)
   find_program(LLVM_CONFIG "llvm-config")
@@ -59,13 +57,16 @@ macro(internal_find_llvm_parts)
   list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
 
   set(LLVM_FOUND ON)
-endmacro(internal_find_llvm_parts)
+endmacro(find_llvm_parts)
 
 
-macro(internal_simulate_llvm_options)
-  # LLVM Options --------------------------------------------------------------
-  # Configure the LLVM CMake options expected by libc++.
+if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  set(LIBCXX_BUILT_STANDALONE 1)
+  message(STATUS "Configuring for standalone build.")
 
+  find_llvm_parts()
+
+  # LLVM Options --------------------------------------------------------------
   include(FindPythonInterp)
   if( NOT PYTHONINTERP_FOUND )
     message(WARNING "Failed to find python interpreter. "
@@ -131,29 +132,7 @@ macro(internal_simulate_llvm_options)
       MESSAGE(SEND_ERROR "Unable to determine platform")
     endif(UNIX)
   endif(WIN32)
-endmacro(internal_simulate_llvm_options)
-
-
-macro(handle_out_of_tree_llvm)
-  # This macro should not be called unless we are building out of tree.
-  # Enforce that.
-  if (NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-    message(FATAL_ERROR "libc++ incorrectly configured for out-of-tree LLVM")
-  endif()
-
-  # Attempt to find an LLVM installation and source directory. Warn if they
-  # are not found.
-  internal_find_llvm_parts()
-  if (NOT LLVM_FOUND)
-    message(WARNING "UNSUPPORTED LIBCXX CONFIGURATION DETECTED: "
-                    "llvm-config not found and LLVM_PATH not defined.\n"
-                    "Reconfigure with -DLLVM_CONFIG=path/to/llvm-config "
-                    "or -DLLVM_PATH=path/to/llvm-source-root.")
-  endif()
-
-  # Simulate the LLVM CMake options and variables provided by an in-tree LLVM.
-  internal_simulate_llvm_options()
 
-  # Additionally include the LLVM CMake functions if we can find the module.
+  # Add LLVM Functions --------------------------------------------------------
   include(AddLLVM OPTIONAL)
-endmacro()
+endif()