Stop enabling clang-tools-extra automatically when clang is in LLVM_E…

…NABLE_PROJECTS

If you want to build clang-tools-extra with monorepo, just add it to
LLVM_ENABLE_PROJECTS like with other projects.

See also "Separating clang-tools-extra from clang in LLVM_ENABLE_PROJECTS"
on cfe-dev.

Differential Revision: https://reviews.llvm.org/D58157

llvm-svn: 354057

llvm/CMakeLists.txt

@@ -104,7 +104,7 @@ endif()
 # LLVM_EXTERNAL_${project}_SOURCE_DIR using LLVM_ALL_PROJECTS
 # This allows an easy way of setting up a build directory for llvm and another
 # one for llvm+clang+... using the same sources.
-set(LLVM_ALL_PROJECTS "clang;compiler-rt;debuginfo-tests;libclc;libcxx;libcxxabi;libunwind;lld;lldb;llgo;llvm;openmp;parallel-libs;polly;pstl")
+set(LLVM_ALL_PROJECTS "clang;clang-tools-extra;compiler-rt;debuginfo-tests;libclc;libcxx;libcxxabi;libunwind;lld;lldb;llgo;llvm;openmp;parallel-libs;polly;pstl")
 set(LLVM_ENABLE_PROJECTS "" CACHE STRING
 	"Semicolon-separated list of projects to build (${LLVM_ALL_PROJECTS}), or \"all\".")
 if( LLVM_ENABLE_PROJECTS STREQUAL "all" )
@@ -141,12 +141,6 @@ if (LLVM_ENABLE_PROJECTS_USED OR NOT LLVM_ENABLE_PROJECTS STREQUAL "")
         message(FATAL_ERROR "LLVM_ENABLE_PROJECTS requests ${proj} but directory not found: ${PROJ_DIR}")
       endif()
       set(LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}")
-      # There is a widely spread opinion that clang-tools-extra should be merged
-      # into clang. The following simulates it by always enabling clang-tools-extra
-      # when enabling clang.
-      if (proj STREQUAL "clang")
-        set(LLVM_EXTERNAL_CLANG_TOOLS_EXTRA_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../clang-tools-extra")
-      endif()
     else()
       message(STATUS "${proj} project is disabled")
       set(SHOULD_ENABLE_PROJECT FALSE)

llvm/docs/GettingStarted.rst

@@ -64,8 +64,8 @@ Here's the short story for getting up and running quickly with LLVM:
 
      * ``-DLLVM_ENABLE_PROJECTS='...'`` --- semicolon-separated list of the LLVM
        subprojects you'd like to additionally build. Can include any of: clang,
-       libcxx, libcxxabi, libunwind, lldb, compiler-rt, lld, polly, or
-       debuginfo-tests.
+       clang-tools-extra, libcxx, libcxxabi, libunwind, lldb, compiler-rt, lld,
+       polly, or debuginfo-tests.
 
        For example, to build LLVM, Clang, libcxx, and libcxxabi, use
        ``-DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi"``.