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diff --git a/third_party/heimdal/lib/roken/signal.c b/third_party/heimdal/lib/roken/signal.c
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+/*
+ * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <signal.h>
+#include "roken.h"
+
+/*
+ * We would like to always use this signal but there is a link error
+ * on NEXTSTEP
+ */
+#if !defined(NeXT) && !defined(__APPLE__)
+/*
+ * Bugs:
+ *
+ * Do we need any extra hacks for SIGCLD and/or SIGCHLD?
+ */
+
+ROKEN_LIB_FUNCTION SigAction ROKEN_LIB_CALL
+signal(int iSig, SigAction pAction)
+{
+ struct sigaction saNew, saOld;
+
+ saNew.sa_handler = pAction;
+ sigemptyset(&saNew.sa_mask);
+ saNew.sa_flags = 0;
+
+ if (iSig == SIGALRM)
+ {
+#ifdef SA_INTERRUPT
+ saNew.sa_flags |= SA_INTERRUPT;
+#endif
+ }
+ else
+ {
+#ifdef SA_RESTART
+ saNew.sa_flags |= SA_RESTART;
+#endif
+ }
+
+ if (sigaction(iSig, &saNew, &saOld) < 0)
+ return(SIG_ERR);
+
+ return(saOld.sa_handler);
+}
+#endif