Added I_SYS_POLL and I_POLL since we cannot rely on HAS_POLL being enough

to include <poll.h>.


git-svn-id: svn://svn.code.sf.net/p/dist/code/trunk/dist@15 2592e710-e01b-42a5-8df0-11608a6cc53d

3 files changed, 58 insertions, 2 deletions

diff --git a/mcon/U/d_poll.U b/mcon/U/d_poll.U
index f07ef0e..54db1b8 100644
--- a/mcon/U/d_poll.U
+++ b/mcon/U/d_poll.U
@@ -24,8 +24,8 @@
 ?S:.
 ?C:HAS_POLL :
 ?C:	This symbol, if defined, indicates that the poll routine is
-?C:	available to poll active file descriptors. You may safely
-?C:	include <poll.h> when this symbol is defined.
+?C:	available to poll active file descriptors.  Please check I_POLL and
+?C:	I_SYS_POLL to know which header should be included as well.
 ?C:.
 ?H:#$d_poll HAS_POLL		/**/
 ?H:.
diff --git a/mcon/U/i_poll.U b/mcon/U/i_poll.U
new file mode 100644
index 0000000..162f4cb
--- /dev/null
+++ b/mcon/U/i_poll.U
@@ -0,0 +1,28 @@
+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS: 
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?MAKE:i_poll: Inhdr
+?MAKE:	-pick add $@ %<
+?S:i_poll:
+?S:	This variable conditionally defines the I_POLL symbol, which
+?S:	indicates to the C program that it should include <poll.h>.
+?S:.
+?C:I_POLL:
+?C:	This symbol, if defined, indicates that the program may include
+?C:	<poll.h>.  If there is no <poll.h>, then you may check I_SYS_POLL
+?C:	instead to see whether there is a <sys/poll.h> to include.
+?C:.
+?H:#$i_poll I_POLL	/**/
+?H:.
+?LINT:set i_poll
+: see if there is a poll.h file
+set poll.h i_poll
+eval $inhdr
+
diff --git a/mcon/U/i_syspoll.U b/mcon/U/i_syspoll.U
new file mode 100644
index 0000000..c284143
--- /dev/null
+++ b/mcon/U/i_syspoll.U
@@ -0,0 +1,28 @@
+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS: 
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?MAKE:i_syspoll: Inhdr
+?MAKE:	-pick add $@ %<
+?S:i_syspoll:
+?S:	This variable conditionally defines the I_SYS_POLL symbol, which
+?S:	indicates to the C program that it should include <sys/poll.h>.
+?S:.
+?C:I_SYS_POLL:
+?C:	This symbol, if defined, indicates that the program may include
+?C:	<sys/poll.h>.  When I_POLL is also defined, it's probably safest
+?C:	to only include <poll.h>.
+?C:.
+?H:#$i_syspoll I_SYS_POLL	/**/
+?H:.
+?LINT:set i_syspoll
+: see if there is a sys/poll.h file
+set sys/poll.h i_syspoll
+eval $inhdr
+