Shut up warnings for setgroups() on Linux -- you have to #include
<grp.h> it seems. This requires yet another configure test.
diff --git a/configure b/configure
index 3fabc13..3ad3727 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
#! /bin/sh
-# From configure.in Revision: 1.270
+# From configure.in Revision: 1.272
# Guess values for system-dependent variables and create Makefiles.
# Generated automatically using autoconf version 2.13
@@ -1968,7 +1968,7 @@
fi
-for ac_hdr in dlfcn.h fcntl.h limits.h langinfo.h locale.h \
+for ac_hdr in dlfcn.h fcntl.h grp.h limits.h langinfo.h locale.h \
ncurses.h poll.h pthread.h \
signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h termios.h \
sys/audioio.h sys/file.h sys/lock.h sys/modem.h db_185.h db.h \