setup: avoid linker warnings on Windows about multiple export specifications
The PyMODINIT_FUNC macro contains __declspec(dllexport), and then the build
process adds an "/EXPORT func" to the command line. The 64-bit linker flags
this [1].
Everything except zstd.c and bser.c are covered by redefining the macro in
util.h [2]. These modules aren't built with util.h in the #include path, so the
redefining hack would have to be open coded two more times.
After seeing that extra_linker_flags didn't work, I couldn't find anything
authoritative indicating why, though I did see an offhand comment on SO that
CFLAGS is also ignored on Windows. I also don't fully understand the
interaction between msvccompiler and msvc9compiler- I first subclassed the
latter, but it isn't used when building with VS2008.
I know the camelcase naming isn't the standard, but the HackedMingw32CCompiler
class above it was introduced 5 years ago (and I think the current style was
in place by then), so I assume that there's some reason for it.
[1] https://support.microsoft.com/en-us/help/835326/you-receive-an-lnk4197-error-in-the-64-bit-version-of-the-visual-c-compiler
[2] https://bugs.python.org/issue9709#msg120859
#!/usr/bin/env python
#
# docchecker - look for problematic markup
#
# Copyright 2016 timeless <timeless@mozdev.org> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import, print_function
import re
import sys
leadingline = re.compile(r'(^\s*)(\S.*)$')
checks = [
(r""":hg:`[^`]*'[^`]*`""",
"""warning: please avoid nesting ' in :hg:`...`"""),
(r'\w:hg:`',
'warning: please have a space before :hg:'),
(r"""(?:[^a-z][^'.])hg ([^,;"`]*'(?!hg)){2}""",
'''warning: please use " instead of ' for hg ... "..."'''),
]
def check(line):
messages = []
for match, msg in checks:
if re.search(match, line):
messages.append(msg)
if messages:
print(line)
for msg in messages:
print(msg)
def work(file):
(llead, lline) = ('', '')
for line in file:
# this section unwraps lines
match = leadingline.match(line)
if not match:
check(lline)
(llead, lline) = ('', '')
continue
lead, line = match.group(1), match.group(2)
if (lead == llead):
if (lline != ''):
lline += ' ' + line
else:
lline = line
else:
check(lline)
(llead, lline) = (lead, line)
check(lline)
def main():
for f in sys.argv[1:]:
try:
with open(f) as file:
work(file)
except BaseException as e:
print("failed to process %s: %s" % (f, e))
main()