| #!/usr/bin/env python3 |
| |
| import sys, os, shutil, subprocess, re, difflib |
| |
| os.environ['LC_ALL'] = 'C' # otherwise 'nm' prints in wrong order |
| |
| builddir = os.getenv ('builddir', os.path.dirname (__file__)) |
| libs = os.getenv ('libs', '.libs') |
| |
| IGNORED_SYMBOLS = '|'.join(['_fini', '_init', '_fdata', '_ftext', '_fbss', |
| '__bss_start', '__bss_start__', '__bss_end__', '_edata', '_end', '_bss_end__', |
| '__end__', '__gcov_.*', 'llvm_.*', 'flush_fn_list', 'writeout_fn_list', 'mangle_path', |
| 'lprofDirMode', 'reset_fn_list']) |
| |
| nm = os.getenv ('NM', shutil.which ('nm')) |
| if not nm: |
| print ('check-symbols.py: \'nm\' not found; skipping test') |
| sys.exit (77) |
| |
| cxxfilt = shutil.which ('c++filt') |
| |
| tested = False |
| stat = 0 |
| |
| for soname in ['harfbuzz', 'harfbuzz-subset', 'harfbuzz-icu', 'harfbuzz-gobject']: |
| for suffix in ['so', 'dylib']: |
| so = os.path.join (builddir, libs, 'lib%s.%s' % (soname, suffix)) |
| if not os.path.exists (so): continue |
| |
| # On macOS, C symbols are prefixed with _ |
| symprefix = '_' if suffix == 'dylib' else '' |
| |
| EXPORTED_SYMBOLS = [s.split ()[2] |
| for s in re.findall (r'^.+ [BCDGIRST] .+$', subprocess.check_output (nm.split() + [so]).decode ('utf-8'), re.MULTILINE) |
| if not re.match (r'.* %s(%s)\b' % (symprefix, IGNORED_SYMBOLS), s)] |
| |
| # run again c++filt also if is available |
| if cxxfilt: |
| EXPORTED_SYMBOLS = subprocess.check_output ( |
| [cxxfilt], input='\n'.join (EXPORTED_SYMBOLS).encode () |
| ).decode ('utf-8').splitlines () |
| |
| prefix = (symprefix + os.path.basename (so)).replace ('libharfbuzz', 'hb').replace ('-', '_').split ('.')[0] |
| |
| print ('Checking that %s does not expose internal symbols' % so) |
| suspicious_symbols = [x for x in EXPORTED_SYMBOLS if not re.match (r'^%s(_|$)' % prefix, x)] |
| if suspicious_symbols: |
| print ('Ouch, internal symbols exposed:', suspicious_symbols) |
| stat = 1 |
| |
| def_path = os.path.join (builddir, soname + '.def') |
| if not os.path.exists (def_path): |
| print ('\'%s\' not found; skipping' % def_path) |
| else: |
| print ('Checking that %s has the same symbol list as %s' % (so, def_path)) |
| with open (def_path, 'r', encoding='utf-8') as f: def_file = f.read () |
| diff_result = list (difflib.context_diff ( |
| def_file.splitlines (), |
| ['EXPORTS'] + [re.sub ('^%shb' % symprefix, 'hb', x) for x in EXPORTED_SYMBOLS] + |
| # cheat: copy the last line from the def file! |
| [def_file.splitlines ()[-1]] |
| )) |
| |
| if diff_result: |
| print ('\n'.join (diff_result)) |
| stat = 1 |
| |
| tested = True |
| |
| if not tested: |
| print ('check-symbols.py: no shared libraries found; skipping test') |
| sys.exit (77) |
| |
| sys.exit (stat) |