[CMake] Projects supported via LLVM_EXTERNAL_*_SOURCE_DIR need to be explicitly speci...

One part of my refactoring from r242705 is untenable due to how CMake caches variables. There is no way other than caching to allow variables to be set in one directory and globally readable, but we really don't want to cache the temporary value marking that a directory has already been included.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242793 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index b03057f..f87e18b 100644 (file)
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -761,16 +761,6 @@ function(add_llvm_implicit_projects)
     endif()
   endforeach()
 
-  get_cmake_property(variableNames VARIABLES)
-  foreach (variableName ${variableNames})
-    get_project_name_from_src_var(${variableName} projectName)
-    if(projectName)
-      string(TOLOWER ${projectName} projectName)
-      list(APPEND list_of_implicit_subdirs ${projectName})
-    endif()
-  endforeach()
-
-  list(REMOVE_DUPLICATES list_of_implicit_subdirs)
   foreach(external_proj ${list_of_implicit_subdirs})
     add_llvm_external_project("${external_proj}")
   endforeach()

diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 71af212..2031693 100644 (file)
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -30,6 +30,13 @@ if(CYGWIN OR NOT LLVM_ENABLE_PIC)
   set(LLVM_TOOL_LLVM_LTO_BUILD Off)
 endif()
 
+# Projects supported via LLVM_EXTERNAL_*_SOURCE_DIR need to be explicitly
+# specified.
+add_llvm_external_project(clang)
+add_llvm_external_project(llgo)
+add_llvm_external_project(lld)
+add_llvm_external_project(lldb)
+
 # Automatically add remaining sub-directories containing a 'CMakeLists.txt'
 # file as external projects.
 add_llvm_implicit_projects()