3 files changed, 15 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index e9762ba68..f96c70bcd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1739,6 +1739,7 @@ AC_CHECK_FUNCS([ \
         getpgrp \
         _getpty \
         getrlimit \
+        getsid \
         getttyent \
         glob \
         group_from_gid \
diff --git a/openbsd-compat/bsd-misc.c b/openbsd-compat/bsd-misc.c
index af58f3bd2..a2f750558 100644
--- a/openbsd-compat/bsd-misc.c
+++ b/openbsd-compat/bsd-misc.c
@@ -298,3 +298,13 @@ raise(int sig)
         kill(getpid(), sig);
 }
 #endif
+
+#ifndef HAVE_GETSID
+pid_t
+getsid(pid_t pid)
+{
+        errno = ENOSYS;
+        return -1;
+}
+#endif
+
diff --git a/openbsd-compat/bsd-misc.h b/openbsd-compat/bsd-misc.h
index 3cb912d28..af2ccdae2 100644
--- a/openbsd-compat/bsd-misc.h
+++ b/openbsd-compat/bsd-misc.h
@@ -141,4 +141,8 @@ void bzero(void *, size_t);
 int raise(int);
 #endif
 
+#ifndef HAVE_GETSID
+pid_t getsid(pid_t);
+#endif
+
 #endif /* _BSD_MISC_H */