[lldb] Enable TestFrameFormatNameWithArgs in case of cross compilation

TestFrameFormatNameWithArgs.test is enabled only in case of native
compilation but is applicable in case of cross compilation too. So,
provision support for enabling it in case of both, native and cross
compilation.

Reviewed By: Michael137

Differential Revision: https://reviews.llvm.org/D140839

lldb/test/Shell/Settings/TestFrameFormatNameWithArgs.test

@@ -1,5 +1,5 @@
 # UNSUPPORTED: system-windows
-# RUN: %clangxx_host -g -O0 %S/Inputs/names.cpp -std=c++17 -o %t.out
+# RUN: %build %S/Inputs/names.cpp --std c++17 -o %t.out
 # RUN: %lldb -b -s %s %t.out | FileCheck %s
 settings set -f frame-format "frame ${function.name-with-args}\n"
 break set -n foo

lldb/test/Shell/helper/build.py

@@ -110,6 +110,12 @@
                     nargs='+',
                     help='Source file(s) to compile / object file(s) to link')
 
+parser.add_argument('--std',
+                    metavar='std',
+                    dest='std',
+                    required=False,
+                    help='Specify the C/C++ standard.')
+
 
 args = parser.parse_args(args=sys.argv[1:])
 
@@ -231,6 +237,7 @@ def __init__(self, toolchain_type, args, obj_ext):
         self.verbose = args.verbose
         self.obj_ext = obj_ext
         self.lib_paths = args.libs_dir
+        self.std = args.std
 
     def _exe_file_name(self):
         assert self.mode != 'compile'
@@ -581,6 +588,9 @@ def _get_compilation_command(self, source, obj):
             args.append('--')
         args.append(source)
 
+        if self.std:
+            args.append('/std:' + self.std)
+
         return ('compiling', [source], obj,
                 self.compile_env,
                 args)
@@ -652,6 +662,9 @@ def _get_compilation_command(self, source, obj):
         if sys.platform == 'darwin':
             args.extend(['-isysroot', self.apple_sdk])
 
+        if self.std:
+            args.append('-std={0}'.format(self.std))
+
         return ('compiling', [source], obj, None, args)
 
     def _get_link_command(self):
@@ -789,6 +802,7 @@ def fix_arguments(args):
     print('  Verbose: ' + str(args.verbose))
     print('  Dryrun: ' + str(args.dry))
     print('  Inputs: ' + format_text(args.inputs, 0, 10))
+    print('  C/C++ Standard: ' + str(args.std))
     print('Script Environment:')
     print_environment(os.environ)