--- configure.ac.old	2018-02-20 01:24:55.000000000 +0400
+++ configure.ac	2019-02-26 12:07:37.005256992 +0400
@@ -1692,6 +1692,29 @@
 The above user and group must have read/write access to the state file
 directory and to the config files in the config file directory."
 
+echo "
+Quagga configuration
+--------------------
+quagga version          : ${PACKAGE_VERSION}
+host operating system   : ${host_os}
+source code location    : ${srcdir}
+compiler                : ${CC}
+compiler flags          : ${CFLAGS}
+make                    : ${MAKE-make}
+linker flags            : ${LDFLAGS} ${LIBS} ${LIBCAP} ${LIBREADLINE} ${LIBM}
+state file directory    : ${quagga_statedir}
+config file directory   : `eval echo \`echo ${sysconfdir}\``
+example directory       : `eval echo \`echo ${exampledir}\``
+user to run as		: ${enable_user}
+group to run as		: ${enable_group}
+group for vty sockets	: ${enable_vty_group}
+config file mask        : ${enable_configfile_mask}
+log file mask           : ${enable_logfile_mask}
+zebra protobuf enabled  : ${have_protobuf:-no}
+
+The above user and group must have read/write access to the state file
+directory and to the config files in the config file directory." > README-build-config
+
 if test x"$quagga_cv_gnu_make" = x"no"; then echo "
 Warning: The ${MAKE-make} programme detected, either in your path or
 via the MAKE variable, is not GNU Make. GNU make may be installed as