[Maria-discuss] Question on building 10.1.26 binary from sources

Hi, I am trying to build 10.1.26 from mariadb sources and compare the performance with the release binary for the same query on the same database. cmake using -DBUILD_CONFIG=mysql_release resulted in a "jemalloc not found" error. So, I did a cmake without any parameters and the build was successful. The binary which i built has a performance drop of 20-30% for the queries, compared to that of the released binary, for the same queries. I compared both the mysqld binaries. The release binary seems to be accessing jemalloc functions and the mysqld binary which i built do not have these functions. I am building this on Centos 6.8. Any help or pointers will be appreciated. Regards Prasad