Allow compiler-rt test targets to work with multi-config CMake generators

Multi-config CMake generators need lit to be able to resolve paths of
artifacts from previous build steps at lit time, rather than expect them
to be fully resolved at CMake time as they may contain the build mode.

Differential Revision: https://reviews.llvm.org/D38471

llvm-svn: 318037

compiler-rt/cmake/Modules/AddCompilerRT.cmake

@@ -508,3 +508,14 @@ function(rt_externalize_debuginfo name)
     message(FATAL_ERROR "COMPILER_RT_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
   endif()
 endfunction()
+
+
+# Configure lit configuration files, including compiler-rt specific variables.
+function(configure_compiler_rt_lit_site_cfg input output)
+  set_llvm_build_mode()
+
+  string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_TEST_COMPILER ${COMPILER_RT_TEST_COMPILER})
+  string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR ${COMPILER_RT_LIBRARY_OUTPUT_DIR})
+
+  configure_lit_site_cfg(${input} ${output})
+endfunction()

compiler-rt/test/CMakeLists.txt

@@ -1,7 +1,7 @@
-# Needed for lit support
+# Needed for lit support in standalone builds.
 include(AddLLVM)
 
-configure_lit_site_cfg(
+configure_compiler_rt_lit_site_cfg(
   ${CMAKE_CURRENT_SOURCE_DIR}/lit.common.configured.in
   ${CMAKE_CURRENT_BINARY_DIR}/lit.common.configured)
 

compiler-rt/test/lit.common.cfg

@@ -27,11 +27,6 @@ config.test_format = lit.formats.ShTest(execute_external)
 if execute_external:
   config.available_features.add('shell')
 
-# Setup clang binary.
-compiler_path = getattr(config, 'clang', None)
-if (not compiler_path) or (not os.path.exists(compiler_path)):
-  lit_config.fatal("Can't find compiler on path %r" % compiler_path)
-
 compiler_id = getattr(config, 'compiler_id', None)
 if compiler_id == "Clang":
   if platform.system() != 'Windows':

compiler-rt/test/lit.common.configured.in

@@ -16,14 +16,14 @@ set_default("llvm_src_root", "@LLVM_MAIN_SRC_DIR@")
 set_default("llvm_obj_root", "@LLVM_BINARY_DIR@")
 set_default("compiler_rt_src_root", "@COMPILER_RT_SOURCE_DIR@")
 set_default("compiler_rt_obj_root", "@COMPILER_RT_BINARY_DIR@")
-set_default("llvm_tools_dir", "@LLVM_TOOLS_BINARY_DIR@")
+set_default("llvm_tools_dir", "@LLVM_TOOLS_DIR@")
 set_default("llvm_shlib_dir", "@LLVM_LIBRARY_OUTPUT_INTDIR@")
 set_default("gold_executable", "@GOLD_EXECUTABLE@")
-set_default("clang", "@COMPILER_RT_TEST_COMPILER@")
+set_default("clang", "@COMPILER_RT_RESOLVED_TEST_COMPILER@")
 set_default("compiler_id", "@COMPILER_RT_TEST_COMPILER_ID@")
 set_default("python_executable", "@PYTHON_EXECUTABLE@")
 set_default("compiler_rt_debug", @COMPILER_RT_DEBUG_PYBOOL@)
-set_default("compiler_rt_libdir", "@COMPILER_RT_LIBRARY_OUTPUT_DIR@")
+set_default("compiler_rt_libdir", "@COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR@")
 set_default("emulator", "@COMPILER_RT_EMULATOR@")
 set_default("ios", False)
 set_default("iossim", False)
@@ -39,9 +39,14 @@ config.available_features.add('target-is-%s' % config.target_arch)
 # apply substitution.
 try:
   config.llvm_tools_dir = config.llvm_tools_dir % lit_config.params
+  config.clang = config.clang % lit_config.params
+  config.compiler_rt_libdir = config.compiler_rt_libdir % lit_config.params
 except KeyError as e:
   key, = e.args
   lit_config.fatal("unable to find %r parameter, use '--param=%s=VALUE'" % (key, key))
 
+if not os.path.exists(config.clang):
+  lit_config.fatal("Can't find compiler on path %r" % config.clang)
+
 # Setup attributes common for all compiler-rt projects.
 lit_config.load_config(config, "@COMPILER_RT_SOURCE_DIR@/test/lit.common.cfg")

compiler-rt/unittests/CMakeLists.txt

@@ -1,6 +1,6 @@
-# Needed for lit support
+# Needed for lit support in standalone builds.
 include(AddLLVM)
 
-configure_lit_site_cfg(
+configure_compiler_rt_lit_site_cfg(
   ${CMAKE_CURRENT_SOURCE_DIR}/lit.common.unit.configured.in
   ${CMAKE_CURRENT_BINARY_DIR}/lit.common.unit.configured)

compiler-rt/unittests/lit.common.unit.configured.in

@@ -4,9 +4,9 @@
 config.target_triple = "@TARGET_TRIPLE@"
 config.llvm_src_root = "@LLVM_MAIN_SRC_DIR@"
 config.llvm_obj_root = "@LLVM_BINARY_DIR@"
-config.llvm_tools_dir = "@LLVM_TOOLS_BINARY_DIR@"
+config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
 config.compiler_rt_src_root = "@COMPILER_RT_SOURCE_DIR@"
-config.compiler_rt_libdir = "@COMPILER_RT_LIBRARY_OUTPUT_DIR@"
+config.compiler_rt_libdir = "@COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR@"
 config.llvm_build_mode = "@LLVM_BUILD_MODE@"
 config.host_arch = "@HOST_ARCH@"
 config.host_os = "@HOST_OS@"
@@ -15,6 +15,7 @@ config.host_os = "@HOST_OS@"
 # so try to apply substitution.
 try:
   config.llvm_tools_dir = config.llvm_tools_dir % lit_config.params
+  config.compiler_rt_libdir = config.compiler_rt_libdir % lit_config.params
   config.llvm_build_mode = config.llvm_build_mode % lit_config.params
 except KeyError as e:
   key, = e.args