Remove test dependency on building.llvm_nm_multiple

Split out from #18905, which completely removes llvm_nm_multiple.

Author: sbc100

test/test_other.py

@@ -28,7 +28,7 @@
   raise Exception('do not run this file directly; do something like: test/runner other')
 
 from tools.shared import config
-from tools.shared import EMCC, EMXX, EMAR, EMRANLIB, FILE_PACKAGER, WINDOWS
+from tools.shared import EMCC, EMXX, EMAR, EMRANLIB, FILE_PACKAGER, WINDOWS, LLVM_NM
 from tools.shared import CLANG_CC, CLANG_CXX, LLVM_AR, LLVM_DWARFDUMP, LLVM_DWP, EMCMAKE, EMCONFIGURE
 from common import RunnerCore, path_from_root, is_slow_test, ensure_dir, disabled, make_executable
 from common import env_modify, no_mac, no_windows, requires_native_clang, with_env_modify
@@ -149,7 +149,28 @@ def decorated(self, *args, **kwargs):
 
 
 def llvm_nm(file):
-  return building.llvm_nm_multiple([file])[0]
+  output = shared.run_process([LLVM_NM, file], stdout=PIPE).stdout
+
+  symbols = {
+    'defs': set(),
+    'undefs': set(),
+    'commons': set(),
+  }
+
+  for line in output.splitlines():
+    # Skip address, which is always fixed-length 8 chars (plus 2
+    # leading chars `: ` and one trailing space)
+    status = line[9]
+    symbol = line[11:]
+
+    if status == 'U':
+      symbols['undefs'].add(symbol)
+    elif status == 'C':
+      symbols['commons'].add(symbol)
+    elif status == status.upper():
+      symbols['defs'].add(symbol)
+
+  return symbols
 
 
 class other(RunnerCore):