vibhatha commented on code in PR #40520:
URL: https://github.com/apache/arrow/pull/40520#discussion_r1625237901
##########
dev/archery/archery/linking.py:
##########
@@ -61,9 +63,84 @@ def list_dependency_names(self):
names.append(name)
return names
+ def _remove_weak_symbols(self, symbol_info):
+ return [line for line in symbol_info if not line.endswith(
+ (" v", " V", " w", " W"))]
+
+ def _remove_symbol_versions(self, symbol_info):
+ return [line.split('@')[0].strip() for line in symbol_info]
+
+ def list_symbols_for_dependency(self, dependency,
remove_symbol_versions=False):
+ if dependency == 'linux-vdso.so.1':
+ # this is a virtual library, thus symbols cannot be listed
+ return []
+ result = _nm.run('-D', '-P', dependency, stdout=subprocess.PIPE)
+ lines = result.stdout.decode('utf-8').splitlines()
+ if remove_symbol_versions:
+ lines = self._remove_symbol_versions(lines)
+ return self._remove_weak_symbols(lines)
+
+ def list_undefined_symbols_for_dependency(self, dependency,
+ remove_symbol_versions=False):
+ result = _nm.run('-u', '-P', dependency, stdout=subprocess.PIPE)
+ lines = result.stdout.decode('utf-8').splitlines()
+ if remove_symbol_versions:
+ lines = self._remove_symbol_versions(lines)
+ return self._remove_weak_symbols(lines)
+
+ def extract_library_paths(self, file_path):
+ system = platform.system()
+ paths = {}
+ if system == 'Linux':
+ result = _ldd.run(file_path, stdout=subprocess.PIPE)
+ lines = result.stdout.decode('utf-8').splitlines()
+ for line in lines:
+ # Input:
+ # librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1
(0x00007f8c9dd90000)
+ # Match:
+ # group(1): librt.so.1
+ # group(2): /lib/x86_64-linux-gnu/librt.so.1
+ match = re.search(r'(\S*) => (\S*)', line)
+ if match:
+ paths[match.group(1)] = match.group(2)
+ else:
+ match = re.search(r'(\S*) \(0x[0-9a-fA-F]*\)', line)
+ # Input:
+ # /lib64/ld-linux-x86-64.so.2 (0x00007c1af3a26000)
+ # Match:
+ # group(1): /lib64/ld-linux-x86-64.so.2
+ if match:
+ paths[match.group(1)] = match.group(1)
+ else:
+ raise NotImplementedError(f"{system} is not supported")
+ return paths
+
+
+def _check_undefined_symbols(dylib):
Review Comment:
You're right we could do that. I updated.
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