[CMake] Propagate top-level targets for compiler-rt runtimes and test…

…-suites

from (external) compiler-rt build tree into LLVM/Clang build tree in
LLVM_BUILD_EXTERNAL_COMPILER_RT mode.

For instance, running
  make asan -j12
in LLVM/Clang build tree will now build Clang, use it to configure
compiler-rt build tree, and invoke "make asan -j12" there. ASan runtime will
be built in the proper location, where Clang driver expects to find it.

Running
  make check-asan
will build Clang, use it to configure compiler-rt build tree, build everything
there, and then run "make check-asan" in compiler-rt build tree using just-built
Clang and ASan runtime.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204463 91177308-0d34-0410-b5e6-96231b3b80d8

runtime/CMakeLists.txt

@@ -12,6 +12,16 @@ foreach (dir ${known_subdirs})
   endif()
 endforeach()
 
+function(get_ext_project_build_command out_var target)
+  if (CMAKE_GENERATOR MATCHES "Make")
+    # Use special command for Makefiles to support parallelism.
+    set(${out_var} "$(MAKE)" "${target}" PARENT_SCOPE)
+  else()
+    set(${out_var} ${CMAKE_COMMAND} --build . --target ${target}
+                                    --config $<CONFIGURATION> PARENT_SCOPE)
+  endif()
+endfunction()
+
 set(COMPILER_RT_SRC_ROOT ${LLVM_MAIN_SRC_DIR}/projects/compiler-rt)
 if(LLVM_BUILD_EXTERNAL_COMPILER_RT AND EXISTS ${COMPILER_RT_SRC_ROOT}/)
   if(CMAKE_GENERATOR MATCHES "Ninja")
@@ -37,6 +47,7 @@ if(LLVM_BUILD_EXTERNAL_COMPILER_RT AND EXISTS ${COMPILER_RT_SRC_ROOT}/)
                -DCOMPILER_RT_INCLUDE_TESTS=${LLVM_INCLUDE_TESTS}
                -DCOMPILER_RT_ENABLE_WERROR=ON
     INSTALL_COMMAND ""
+    STEP_TARGETS configure build
     )
   # Due to a bug, DEPENDS in ExternalProject_Add doesn't work
   # in CMake 2.8.9 and 2.8.10.
@@ -57,20 +68,41 @@ if(LLVM_BUILD_EXTERNAL_COMPILER_RT AND EXISTS ${COMPILER_RT_SRC_ROOT}/)
     DEPENDS ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
   )
 
-  if (CMAKE_GENERATOR MATCHES "Make")
-    # Use special command for Makefiles to support parallelism.
-    set(check_command "$(MAKE)" "check-all")
-  else()
-    set(check_command ${CMAKE_COMMAND} --build . --target check-all
-                                       --config $<CONFIGURATION>)
-  endif()
   ExternalProject_Get_Property(compiler-rt BINARY_DIR)
-  add_custom_target(check-compiler-rt
-          COMMAND ${check_command}
-          DEPENDS compiler-rt
-          WORKING_DIRECTORY ${BINARY_DIR}
-          VERBATIM)
+  set(COMPILER_RT_BINARY_DIR ${BINARY_DIR})
+
+  # Add top-level targets that build specific compiler-rt runtimes.
+  set(COMPILER_RT_RUNTIMES asan builtins dfsan lsan msan profile tsan ubsan)
+  foreach(runtime ${COMPILER_RT_RUNTIMES})
+    get_ext_project_build_command(build_runtime_cmd ${runtime})
+    add_custom_target(${runtime}
+      COMMAND ${build_runtime_cmd}
+      DEPENDS compiler-rt-configure
+      WORKING_DIRECTORY ${COMPILER_RT_BINARY_DIR}
+      VERBATIM)
+  endforeach()
+
   # Add binaries that compiler-rt tests depend on.
-  add_dependencies(check-compiler-rt FileCheck count
-                                     not llvm-nm llvm-symbolizer)
+  set(COMPILER_RT_TEST_DEPENDENCIES
+    FileCheck count not llvm-nm llvm-symbolizer)
+
+  # Add top-level targets for various compiler-rt test suites.
+  set(COMPILER_RT_TEST_SUITES check-asan check-dfsan check-lsan check-msan
+    check-sanitizer check-tsan check-ubsan)
+  foreach(test_suite ${COMPILER_RT_TEST_SUITES})
+    get_ext_project_build_command(run_test_suite ${test_suite})
+    add_custom_target(${test_suite}
+      COMMAND ${run_test_suite}
+      DEPENDS compiler-rt-build ${COMPILER_RT_TEST_DEPENDENCIES}
+      WORKING_DIRECTORY ${COMPILER_RT_BINARY_DIR}
+      VERBATIM)
+  endforeach()
+
+  # Add special target to run all compiler-rt test suites.
+  get_ext_project_build_command(run_check_compiler_rt check-all)
+  add_custom_target(check-compiler-rt
+    COMMAND ${run_check_compiler_rt}
+    DEPENDS compiler-rt-build ${COMPILER_RT_TEST_DEPENDENCIES}
+    WORKING_DIRECTORY ${COMPILER_RT_BINARY_DIR}
+    VERBATIM)
 endif()