refine build summary.

@@ -38,8 +38,9 @@ echo -e "     \${BLACK}+--------------------------------------------------------
 echo -e "     |${SrsGperfSummaryColor}gperf @see: https://github.com/simple-rtmp-server/srs/wiki/v1_CN_GPERF\${BLACK}"
 echo -e "     |     ${SrsGperfMCSummaryColor}gmc @see: http://google-perftools.googlecode.com/svn/trunk/doc/heap_checker.html\${BLACK}"
 echo -e "     |     ${SrsGperfMCSummaryColor}gmc: gperf memory check, or memory leak detect\${BLACK}"
-echo -e "     |             ${SrsGperfMCSummaryColor}env PPROF_PATH=./objs/pprof HEAPCHECK=normal ./objs/srs -c conf/console.conf # start gmc\${BLACK}"
+echo -e "     |             ${SrsGperfMCSummaryColor}env PPROF_PATH=./objs/pprof HEAPCHECK=normal ./objs/srs -c conf/console.conf 2>gmc.log # start gmc\${BLACK}"
 echo -e "     |             ${SrsGperfMCSummaryColor}killall -2 srs # or CTRL+C to stop gmc\${BLACK}"
+echo -e "     |             ${SrsGperfMCSummaryColor}cat gmc.log # to analysis memory leak\${BLACK}"
 echo -e "     |     ${SrsGperfMPSummaryColor}gmp @see: http://google-perftools.googlecode.com/svn/trunk/doc/heapprofile.html\${BLACK}"
 echo -e "     |     ${SrsGperfMPSummaryColor}gmp: gperf memory profile, similar to gcp\${BLACK}"
 echo -e "     |             ${SrsGperfMPSummaryColor}rm -f gperf.srs.gmp*; ./objs/srs -c conf/console.conf # start gmp\${BLACK}"