Revert "[cmake] Add helper for finding potentially external projects"

[oota-llvm.git] / cmake / modules / AddLLVM.cmake

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 26eed9ef21988159e353e9bb5ad1687546b573b6..f87e18bfcff1144f6568ea804e95bb21557339c5 100644 (file)
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -694,24 +694,39 @@ macro(add_llvm_external_project name)
     set(add_llvm_external_dir ${name})
   endif()
   canonicalize_tool_name(${name} nameUPPER)
-  set(LLVM_TOOL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}"
-      CACHE PATH "Path to ${name} source directory")
-  if (NOT ${LLVM_TOOL_${nameUPPER}_SOURCE_DIR} STREQUAL ""
-      AND EXISTS ${LLVM_TOOL_${nameUPPER}_SOURCE_DIR}/CMakeLists.txt)
+  if(NOT DEFINED LLVM_TOOL_${nameUPPER}_BUILD)
     option(LLVM_TOOL_${nameUPPER}_BUILD
-           "Whether to build ${name} as part of LLVM" ON)
-    if (LLVM_TOOL_${nameUPPER}_BUILD)
-      add_subdirectory(${LLVM_TOOL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
+           "Whether to build ${name} as part of LLVM" On)
+  endif()
+  if (LLVM_TOOL_${nameUPPER}_BUILD)
+    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}/CMakeLists.txt)
+        add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir} ${add_llvm_external_dir})
+        set(LLVM_TOOL_${nameUPPER}_BUILD Off)
+    elseif(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR)
+      set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
+        "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}"
+        CACHE PATH "Path to ${name} source directory")
+      mark_as_advanced(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR)
+      add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
       set(LLVM_TOOL_${nameUPPER}_BUILD Off)
     endif()
   endif()
 endmacro(add_llvm_external_project)
 
 macro(add_llvm_tool_subdirectory name)
-  set(LLVM_TOOL_${nameUPPER}_BUILD Off)
-  add_subdirectory(${name})
+  add_llvm_external_project(${name})
 endmacro(add_llvm_tool_subdirectory)
 
+function(get_project_name_from_src_var var output)
+  string(REGEX MATCH "LLVM_EXTERNAL_(.*)_SOURCE_DIR"
+         MACHED_TOOL "${var}")
+  if(MACHED_TOOL)
+    set(${output} ${CMAKE_MATCH_1} PARENT_SCOPE)
+  else()
+    set(${output} PARENT_SCOPE)
+  endif()
+endfunction()
+
 function(create_llvm_tool_options)
   file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
   foreach(dir ${sub-dirs})
@@ -719,6 +734,16 @@ function(create_llvm_tool_options)
       canonicalize_tool_name(${dir} name)
       option(LLVM_TOOL_${name}_BUILD
            "Whether to build ${name} as part of LLVM" On)
+      mark_as_advanced(LLVM_TOOL_${name}_BUILD)
+    endif()
+  endforeach()
+  get_cmake_property(variableNames VARIABLES)
+  foreach (variableName ${variableNames})
+    get_project_name_from_src_var(${variableName} projectName)
+    if(projectName)
+      option(LLVM_TOOL_${projectName}_BUILD
+           "Whether to build ${name} as part of LLVM" On)
+      mark_as_advanced(LLVM_TOOL_${name}_BUILD)
     endif()
   endforeach()
 endfunction(create_llvm_tool_options)
@@ -790,7 +815,7 @@ function(llvm_add_go_executable binary pkgpath)
     endforeach(d)
     set(ldflags "${CMAKE_EXE_LINKER_FLAGS}")
     add_custom_command(OUTPUT ${binpath}
-      COMMAND ${CMAKE_BINARY_DIR}/bin/llvm-go "cc=${cc}" "cxx=${cxx}" "cppflags=${cppflags}" "ldflags=${ldflags}"
+      COMMAND ${CMAKE_BINARY_DIR}/bin/llvm-go "go=${GO_EXECUTABLE}" "cc=${cc}" "cxx=${cxx}" "cppflags=${cppflags}" "ldflags=${ldflags}"
               ${ARG_GOFLAGS} build -o ${binpath} ${pkgpath}
       DEPENDS llvm-config ${CMAKE_BINARY_DIR}/bin/llvm-go${CMAKE_EXECUTABLE_SUFFIX}
               ${llvmlibs} ${ARG_DEPENDS}