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Don't use poll() on Mac OS

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Congratulations, Apple. Your OS is really great. In some versions (according to
google, it used to work in older releases), poll() can only handle sockets. If
you give it a pipe (as e.g. the shell module does), it will fail with POLLNVAL
which Csocket handles by going into an endless loop.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter
2011-04-03 18:04:14 +02:00
parent e51b7daedc
commit 72c1fa0c90
1 changed files with 18 additions and 1 deletions
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configure.ac
+18 -1
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@@ -160,7 +160,24 @@ if test "x$GXX" = "xyes"; then
fi
if test "$POLL" = "yes"; then
AC_DEFINE([CSOCK_USE_POLL], [1], [Use poll() instead of select()])
# poll() is broken on Mac OS, it fails with POLLNVAL for pipe()s.
if test -n "$ISDARWIN"
then
# Did they give us --enable-poll?
if test -n "$enable_poll"
then
# Yes, they asked for this.
AC_MSG_WARN([poll() is known to be broken on Mac OS X. You have been warned.])
else
# No, our default value of "yes" got applied.
AC_MSG_WARN([poll() is known to be broken on Mac OS X. Using select() instead.])
AC_MSG_WARN([Use --enable-poll for forcing poll() to be used.])
POLL=no
fi
fi
if test "$POLL" = "yes"; then
AC_DEFINE([CSOCK_USE_POLL], [1], [Use poll() instead of select()])
fi
fi
AC_CHECK_LIB( gnugetopt, getopt_long,)