49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
#!/usr/bin/env python3
|
|
|
|
# Before a shared module's DSO is produced, a static library is built for it
|
|
# and passed to this script. The script generates -Wl,-u options to force
|
|
# the inclusion of symbol from libqemuutil.a if the shared modules need them,
|
|
# This is necessary because the modules may use functions not needed by the
|
|
# executable itself, which would cause the function to not be linked in.
|
|
# Then the DSO loading would fail because of the missing symbol.
|
|
|
|
|
|
import sys
|
|
import subprocess
|
|
|
|
def filter_lines_set(stdout, from_staticlib):
|
|
linesSet = set()
|
|
for line in stdout.splitlines():
|
|
tokens = line.split(b' ')
|
|
if len(tokens) >= 2:
|
|
if from_staticlib and tokens[1] == b'U':
|
|
continue
|
|
if not from_staticlib and tokens[1] != b'U':
|
|
continue
|
|
new_line = b'-Wl,-u,' + tokens[0]
|
|
if not new_line in linesSet:
|
|
linesSet.add(new_line)
|
|
return linesSet
|
|
|
|
def main(args):
|
|
if len(args) <= 3:
|
|
sys.exit(0)
|
|
|
|
nm = args[1]
|
|
staticlib = args[2]
|
|
pc = subprocess.run([nm, "-P", "-g", staticlib], stdout=subprocess.PIPE)
|
|
if pc.returncode != 0:
|
|
sys.exit(1)
|
|
staticlib_syms = filter_lines_set(pc.stdout, True)
|
|
|
|
shared_modules = args[3:]
|
|
pc = subprocess.run([nm, "-P", "-g"] + shared_modules, stdout=subprocess.PIPE)
|
|
if pc.returncode != 0:
|
|
sys.exit(1)
|
|
modules_undef_syms = filter_lines_set(pc.stdout, False)
|
|
lines = sorted(staticlib_syms.intersection(modules_undef_syms))
|
|
sys.stdout.buffer.write(b'\n'.join(lines))
|
|
|
|
if __name__ == "__main__":
|
|
main(sys.argv)
|