[test] Pass filename explicitly to compile_btest helper. NFC

This allows us to use `compiler_for` to determine whether to run
`EMCC` or `EMXX` appropriately.

Author: sbc100

test/common.py

@@ -36,6 +36,7 @@
 from tools.shared import EMCC, EMXX, DEBUG, EMCONFIGURE, EMCMAKE
 from tools.shared import get_canonical_temp_dir, path_from_root
 from tools.utils import MACOS, WINDOWS, read_file, read_binary, write_binary, exit_with_error
+from tools.settings import COMPILE_TIME_SETTINGS
 from tools import shared, line_endings, building, config, utils
 
 logger = logging.getLogger('common')
@@ -959,9 +960,11 @@ def has_changed_setting(self, key):
   def clear_setting(self, key):
     self.settings_mods.pop(key, None)
 
-  def serialize_settings(self):
+  def serialize_settings(self, compile_only=False):
     ret = []
     for key, value in self.settings_mods.items():
+      if compile_only and key not in COMPILE_TIME_SETTINGS:
+        continue
       if value == 1:
         ret.append(f'-s{key}')
       elif type(value) is list:
@@ -995,15 +998,15 @@ def add_on_exit(self, code):
   # param @main_file whether this is the main file of the test. some arguments
   #                  (like --pre-js) do not need to be passed when building
   #                  libraries, for example
-  def get_emcc_args(self, main_file=False, ldflags=True):
+  def get_emcc_args(self, main_file=False, compile_only=False):
     def is_ldflag(f):
       return any(f.startswith(s) for s in ['-sENVIRONMENT=', '--pre-js=', '--post-js='])
 
-    args = self.serialize_settings() + self.emcc_args
-    if ldflags:
-      args += self.ldflags
-    else:
+    args = self.serialize_settings(compile_only) + self.emcc_args
+    if compile_only:
       args = [a for a in args if not is_ldflag(a)]
+    else:
+      args += self.ldflags
     if not main_file:
       for i, arg in enumerate(args):
         if arg in ('--pre-js', '--post-js'):
@@ -1359,7 +1362,7 @@ def get_library(self, name, generated_libs, configure=['sh', './configure'],  #
     # try to pass linker settings when compiling).
     emcc_args = []
     if not native:
-      emcc_args = self.get_emcc_args(ldflags=False)
+      emcc_args = self.get_emcc_args(compile_only=False)
 
     hash_input = (str(emcc_args) + ' $ ' + str(env_init)).encode('utf-8')
     cache_name = name + ','.join([opt for opt in emcc_args if len(opt) < 7]) + '_' + hashlib.md5(hash_input).hexdigest() + cache_name_extra
@@ -1408,7 +1411,7 @@ def run_process(self, cmd, check=True, **args):
         self.fail(f'subprocess exited with non-zero return code({e.returncode}): `{shared.shlex_join(cmd)}`')
 
   def emcc(self, filename, args=[], output_filename=None, **kwargs):  # noqa
-    cmd = [compiler_for(filename), filename] + self.get_emcc_args(ldflags='-c' not in args) + args
+    cmd = [compiler_for(filename), filename] + self.get_emcc_args(compile_only='-c' in args) + args
     if output_filename:
       cmd += ['-o', output_filename]
     self.run_process(cmd, **kwargs)
@@ -2111,24 +2114,26 @@ def reftest(self, expected, manually_trigger=False):
       setupRefTest();
 ''' % (reporting, basename, int(manually_trigger)))
 
-  def compile_btest(self, args, reporting=Reporting.FULL):
+  def compile_btest(self, filename, args, reporting=Reporting.FULL):
     # Inject support code for reporting results. This adds an include a header so testcases can
     # use REPORT_RESULT, and also adds a cpp file to be compiled alongside the testcase, which
     # contains the implementation of REPORT_RESULT (we can't just include that implementation in
     # the header as there may be multiple files being compiled here).
     if reporting != Reporting.NONE:
       # For basic reporting we inject JS helper funtions to report result back to server.
-      args += ['-DEMTEST_PORT_NUMBER=%d' % self.port,
-               '--pre-js', test_file('browser_reporting.js')]
+      args += ['--pre-js', test_file('browser_reporting.js')]
       if reporting == Reporting.FULL:
-        # If C reporting (i.e. REPORT_RESULT macro) is required
-        # also compile in report_result.c and forice-include report_result.h
-        args += ['-I' + TEST_ROOT,
-                 '-include', test_file('report_result.h'),
-                 test_file('report_result.c')]
+        # If C reporting (i.e. the REPORT_RESULT macro) is required we
+        # also include report_result.c and force-include report_result.h
+        self.run_process([EMCC, '-c', '-I' + TEST_ROOT,
+                          '-DEMTEST_PORT_NUMBER=%d' % self.port,
+                          test_file('report_result.c')] + self.get_emcc_args(compile_only=True))
+        args += ['report_result.o', '-include', test_file('report_result.h')]
     if EMTEST_BROWSER == 'node':
       args.append('-DEMTEST_NODE')
-    self.run_process([EMCC] + self.get_emcc_args() + args)
+    if not os.path.exists(filename):
+      filename = test_file(filename)
+    self.run_process([compiler_for(filename), filename] + self.get_emcc_args() + args)
 
   def btest_exit(self, filename, assert_returncode=0, *args, **kwargs):
     """Special case of btest that reports its result solely via exiting
@@ -2171,10 +2176,10 @@ def btest(self, filename, expected=None, reference=None,
       # manual_reference only makes sense for reference tests
       assert manual_reference is None
     outfile = output_basename + '.html'
-    args += [filename, '-o', outfile]
+    args += ['-o', outfile]
     # print('all args:', args)
     utils.delete_file(outfile)
-    self.compile_btest(args, reporting=reporting)
+    self.compile_btest(filename, args, reporting=reporting)
     self.assertExists(outfile)
     if post_build:
       post_build()