--- /dev/null
+#!/bin/sh
+
+if [ $# -lt 3 ]
+then
+ echo "Usage: $0 srcdir builddir compiler"
+ exit 1
+fi
+
+uname=`uname -a`
+date=`date`
+srcdir=$1
+builddir=$2
+compiler=$3
+
+if [ ! "x$USER" = "x" ]; then
+ whoami=$USER
+else
+ if [ ! "x$LOGNAME" = "x" ]; then
+ whoami=$LOGNAME
+ else
+ whoami=`whoami || id -un`
+ fi
+fi
+
+host=`hostname`
+
+cat <<EOF
+/* This file is automatically generated with "make include/build_env.h". DO NOT EDIT */
+
+#ifndef _BUILD_ENV_H
+#define _BUILD_ENV_H
+
+#define BUILD_ENV_UNAME "${uname}"
+#define BUILD_ENV_DATE "${date}"
+#define BUILD_ENV_SRCDIR "${srcdir}"
+#define BUILD_ENV_BUILDDIR "${builddir}"
+#define BUILD_ENV_USER "${whoami}"
+#define BUILD_ENV_HOST "${host}"
+#define BUILD_ENV_COMPILER "${compiler}"
+#endif /* _BUILD_ENV_H */
+EOF