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I try install OPENssh ./configure

checking for openssl/opensslv.h... no configure: error: * OpenSSL headers missing

any idea?

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As jamespo points out, are you sure you want to build it from source? Openssh is quite a critical attack vector if any exploits should be found, so it would be best to use the repositories so you get security updates. – Egil Apr 6 '11 at 9:50

I would install the openssh server package if you have a choice apt-get install openssh-server. However if you want to compile from source install openssl first.

Either from source or from the package: apt-get install libssl-dev openssl

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It's likely you are missing the development headers for openssl. Try installing "openssl-devel".

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@tijybba Can you remove your duplicate comment? – hexafraction Sep 16 '12 at 12:12

To install dependencies needed to build a given package, you can use apt-get's build-dep option, e.g., apt-get build-dep openssh or apt-get build-dep openssh-server if you are trying to build the server.

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