diff options
| -rw-r--r-- | build_scripts/utils.py | 64 |
1 files changed, 60 insertions, 4 deletions
diff --git a/build_scripts/utils.py b/build_scripts/utils.py index 1cc224963..614fe336a 100644 --- a/build_scripts/utils.py +++ b/build_scripts/utils.py @@ -796,18 +796,48 @@ def ldd_get_paths_for_dependencies(dependencies_regex, executable_path=None, dep return paths -def ldd(executable_path): +def _ldd_ldd(executable_path): + """Helper for ldd(): + Returns ldd output of shared library dependencies for given + `executable_path`. + + Parameters + ---------- + executable_path : str + path to executable or shared library. + + Returns + ------- + output : str + the raw output retrieved from the dynamic linker. + """ + + output = '' + error = '' + try: + output_lines = run_process_output(['ldd', executable_path]) + output = '\n'.join(output_lines) + except Exception as e: + error = str(e) + if not output: + message = f"ldd failed to query for dependent shared libraries of {executable_path}: {error}" + raise RuntimeError(message) + return output + + +def _ldd_ldso(executable_path): """ + Helper for ldd(): Returns ld.so output of shared library dependencies for given `executable_path`. - This is a partial port of /usr/bin/ldd from bash to Python. + This is a partial port of /usr/bin/ldd from bash to Python for + systems that do not have ldd. The dependency list is retrieved by setting the LD_TRACE_LOADED_OBJECTS=1 environment variable, and executing the given path via the dynamic loader ld.so. - Only works on Linux. The port is required to make this work on - systems that might not have ldd. + Only works on Linux. This is because ldd (on Ubuntu) is shipped in the libc-bin package that, which might have a minuscule percentage of not being installed. @@ -856,6 +886,32 @@ def ldd(executable_path): f"libraries of {executable_path}") +def ldd(executable_path): + """ + Returns ldd output of shared library dependencies for given `executable_path`, + using either ldd or ld.so depending on availability. + + Parameters + ---------- + executable_path : str + path to executable or shared library. + + Returns + ------- + output : str + the raw output retrieved from the dynamic linker. + """ + result = '' + try: + result = _ldd_ldd(executable_path) + except RuntimeError as e: + message = f"ldd: Falling back to ld.so ({str(e)})" + log.warn(message) + if not result: + result = _ldd_ldso(executable_path) + return result + + def find_files_using_glob(path, pattern): """ Returns list of files that matched glob `pattern` in `path`. """ final_pattern = os.path.join(path, pattern) |