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Diffstat (limited to 'mcon/U/d_sigaltstack.U')
| -rw-r--r-- | mcon/U/d_sigaltstack.U | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/mcon/U/d_sigaltstack.U b/mcon/U/d_sigaltstack.U new file mode 100644 index 0000000..e9e4891 --- /dev/null +++ b/mcon/U/d_sigaltstack.U @@ -0,0 +1,42 @@ +?RCS: +?RCS: Copyright (c) 2013, 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: +?MAKE:d_sigaltstack: Trylink cat +?MAKE: -pick add $@ %< +?S:d_sigaltstack: +?S: This variable conditionally defines the HAS_SIGALTSTACK symbol, which +?S: indicates that the sigaltstack() routine is available to define an +?S: alternate signal stack. +?S:. +?C:HAS_SIGALTSTACK: +?C: This symbol, if defined, indicates that the sigaltstack() routine +?C: is available to define an alternate signal stack. +?C:. +?H:#$d_sigaltstack HAS_SIGALTSTACK /**/ +?H:. +?LINT:set d_sigaltstack +: see if we have sigaltstack +$cat >try.c <<EOC +#include <stdio.h> +#include <signal.h> +int main(void) +{ + stack_t ss; + static int ret; + ss.ss_sp = NULL; + ss.ss_flags |= SS_ONSTACK | SS_DISABLE; + ss.ss_size = SIGSTKSZ + MINSIGSTKSZ; + ret |= sigaltstack(&ss, NULL); + return ret ? 0 : 1; +} +EOC +cyn=sigaltstack +set d_sigaltstack +eval $trylink + |