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?RCS: Copyright (c) 2012, 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:d_sched_yield: Trylink cat
?MAKE: -pick add $@ %<
?S:d_sched_yield:
?S: This variable conditionally defines the HAS_SCHED_YIELD symbol, which
?S: indicates to the C program that the sched_yield() routine is available
?S: to yield the CPU.
?S:.
?C:HAS_SCHED_YIELD :
?C: This symbol, if defined, indicates that the sched_yield() routine is
?C: available to yield the CPU.
?C:.
?H:#$d_sched_yield HAS_SCHED_YIELD /**/
?H:.
?LINT:set d_sched_yield
: see if sched_yield exists
$cat >try.c <<EOC
#include <sched.h>
int main(void)
{
static int ret;
ret |= sched_yield();
return ret ? 0 : 1;
}
EOC
cyn=sched_yield
set d_sched_yield
eval $trylink
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