Let test/Unit/lit.cfg add config.shlibdir to $PATH on DLL platforms like cygming.

This makes unittests run with BUILD_SHARED_LIBS on DLL platforms.

llvm-svn: 212316

clang-tools-extra/test/Unit/lit.cfg

@@ -12,6 +12,11 @@ if extra_tools_obj_dir is not None:
   config.test_source_root = extra_tools_obj_dir
   config.test_exec_root = config.test_source_root
 
+# Win32 seeks DLLs along %PATH%.
+if sys.platform in ['win32', 'cygwin'] and os.path.isdir(config.shlibdir):
+    config.environment['PATH'] = os.path.pathsep.join((
+            config.shlibdir, config.environment['PATH']))
+
 # All GoogleTests are named to have 'Tests' as their suffix. The '.' option is
 # a special value for GoogleTest indicating that it should look through the
 # entire testsuite recursively for tests (alternatively, one could provide a

clang-tools-extra/test/Unit/lit.site.cfg.in

@@ -2,6 +2,7 @@
 # Do not edit!
 config.extra_tools_obj_dir = "@CLANG_TOOLS_BINARY_DIR@/unittests"
 config.extra_tools_src_dir = "@CLANG_TOOLS_SOURCE_DIR@/unittests"
+config.shlibdir = "@SHLIBDIR@"
 config.target_triple = "@TARGET_TRIPLE@"
 
 # Make sure any custom vars defined above that are required in lit.local.cfg

clang/test/Unit/lit.cfg

@@ -100,4 +100,9 @@ if not llvm_libs_dir:
     lit_config.fatal('No LLVM libs dir set!')
 shlibpath = os.path.pathsep.join((llvm_libs_dir,
                                  config.environment.get(shlibpath_var,'')))
+
+# Win32 seeks DLLs along %PATH%.
+if sys.platform in ['win32', 'cygwin'] and os.path.isdir(config.shlibdir):
+    shlibpath = os.path.pathsep.join((config.shlibdir, shlibpath))
+
 config.environment[shlibpath_var] = shlibpath

llvm/test/Unit/lit.cfg

@@ -35,6 +35,11 @@ for symbolizer in ['ASAN_SYMBOLIZER_PATH', 'MSAN_SYMBOLIZER_PATH']:
     if symbolizer in os.environ:
         config.environment[symbolizer] = os.environ[symbolizer]
 
+# Win32 seeks DLLs along %PATH%.
+if sys.platform in ['win32', 'cygwin'] and os.path.isdir(config.shlibdir):
+    config.environment['PATH'] = os.path.pathsep.join((
+            config.shlibdir, config.environment['PATH']))
+
 ###
 
 # Check that the object root is known.