Include grp.h in setgroups test. Fixes #765822.
diff --git a/configure b/configure
index f5bbc77..3f4ed4d 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
#! /bin/sh
-# From configure.in Revision: 1.420 .
+# From configure.in Revision: 1.421 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.53 for python 2.3.
#
@@ -908,7 +908,7 @@
# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
# absolute.
ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
@@ -13123,6 +13123,7 @@
fi
rm -f conftest.$ac_objext conftest.$ac_ext
+# On some systems, setgroups is in unistd.h, on others, in grp.h
echo "$as_me:$LINENO: checking for setgroups" >&5
echo $ECHO_N "checking for setgroups... $ECHO_C" >&6
cat >conftest.$ac_ext <<_ACEOF
@@ -13131,6 +13132,9 @@
#include "confdefs.h"
#include <unistd.h>
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
#ifdef F77_DUMMY_MAIN
# ifdef __cplusplus
@@ -18450,7 +18454,7 @@
# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
# absolute.
ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`