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