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[HAVE_UNISTD_H]: Include unistd.h so it can declare sys_siglist.
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@ -23,6 +23,14 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <config.h>
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#endif
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/* Some systems declare `sys_siglist in <unistd.h>; if
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configure defined SYS_SIGLIST_DECLARED, it may expect
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to find the declaration there. */
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Some systems do not define NSIG in <signal.h>. */
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#ifndef NSIG
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#ifdef _NSIG
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