# Compile with openssl for 6.3 on a rhel8 host

**URL:** https://forums.foundationdb.org/t/compile-with-openssl-for-6-3-on-a-rhel8-host/3536
**Category:** Development
**Created:** [September 2, 2022, 10:06pm UTC](https://forums.foundationdb.org/t/compile-with-openssl-for-6-3-on-a-rhel8-host/3536 "2022-09-02T22:06:51Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![tangerine](https://sea1.discourse-cdn.com/foundationdb/user_avatar/forums.foundationdb.org/tangerine/32/1084_2.png) [@tangerine](https://forums.foundationdb.org/u/tangerine)
#### Post date: [September 2, 2022, 10:06pm UTC](https://forums.foundationdb.org/t/compile-with-openssl-for-6-3-on-a-rhel8-host/3536/1 "2022-09-02T22:06:52Z")

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Hi,  
I am trying to follow the Readme in the foundationdb (fdb) GitHub repo to compile FDB from source. One thing I notice is that if I do that from a linux host (say centos 8/centos7/rhel 8), the ssl option is not turned on even if I pass the parameter in -D. But if I use the foundationdb build docker env. to do that, it is on. Is it because the docker env. has the openssl library installed and compiled while on a normal host I don’t have the necessary library and hence it won’t pass the checking? Just want to confirm.  
Thanks,