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build: fix macOS --enable-modules build

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Apple's nm implementation includes empty lines in the output that are not
found in GNU binutils.  This confuses scripts/undefsym.py, though it did
not confuse the scripts/undefsym.sh script that it replaced.  To fix
this, ignore lines that do not have two fields.

Reported-by: Emmanuel Blot <eblot.ml@gmail.com>
Tested-by: Emmanuel Blot <eblot.ml@gmail.com>
Fixes: 604f3e4e90 ("meson: Convert undefsym.sh to undefsym.py", 2020-09-08)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-10-20 05:18:17 -04:00
parent 4c5b97bfd0
commit da0dfe251d
2 changed files with 6 additions and 7 deletions
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11
scripts/undefsym.py
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@ -15,12 +15,11 @@ def filter_lines_set(stdout, from_staticlib):
linesSet = set()
for line in stdout.splitlines():
tokens = line.split(b' ')
if len(tokens) >= 1:
if len(tokens) > 1:
if from_staticlib and tokens[1] == b'U':
continue
if not from_staticlib and tokens[1] != b'U':
continue
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)