From mboxrd@z Thu Jan  1 00:00:00 1970
From: Duy Nguyen <pclouds@gmail.com>
Subject: pthread_sigmask() on windows (wine actualy)
Date: Sun, 1 May 2016 18:06:07 +0700
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To: Jeff King <peff@peff.net>
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I got this while compiling master today using mingw32 cross toolchain

    CC run-command.o
run-command.c: In function 'run_thread':
run-command.c:596:3: warning: implicit declaration of function
'pthread_sigmask' [-Wimplicit-function-declaration]
run-command.c:596:23: error: 'SIG_BLOCK' undeclared (first use in this function)
run-command.c:596:23: note: each undeclared identifier is reported
only once for each function it appears in

This is added in c792d7b (run-command: teach async threads to ignore
SIGPIPE - 2016-04-19). From the look of it, wrapping #ifndef
GIT_WINDOWS_NATIVE is probably enough? I checked gfw/master too to see
how gfw deals with it, but the commit has not been merged there yet.
-- 
Duy