diff options
Diffstat (limited to 'mcon/U/d_syscall.U')
| -rw-r--r-- | mcon/U/d_syscall.U | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/mcon/U/d_syscall.U b/mcon/U/d_syscall.U new file mode 100644 index 0000000..868f25b --- /dev/null +++ b/mcon/U/d_syscall.U @@ -0,0 +1,45 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?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 License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_syscall.U,v $ +?RCS: Revision 3.0 1993/08/18 12:07:42 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:d_syscall: Trylink cat i_unistd +?MAKE: -pick add $@ %< +?S:d_syscall: +?S: This variable conditionally defines HAS_SYSCALL if syscall() is +?S: available call arbitrary system calls. +?S:. +?C:HAS_SYSCALL (SYSCALL): +?C: This symbol, if defined, indicates that the syscall routine is +?C: available to call arbitrary system calls. If undefined, that's tough. +?C:. +?H:#$d_syscall HAS_SYSCALL /**/ +?H:. +?LINT:set d_syscall +: see if syscall exists +$cat >try.c <<EOC +#include <sys/syscall.h> +#$i_unistd I_UNISTD +#ifdef I_UNISTD +#include <unistd.h> +#endif +int main(void) +{ + static int ret, number; + ret |= syscall(number, 0); + return ret ? 0 : 1; +} +EOC +cyn=syscall +set d_syscall +eval $trylink + |