https://community.hpe.com/t5/operating-system-openvms/rebuilding-ssl-with-zlib-support/m-p/4139864#M13985 HP SSL Version 1.3 for OpenVMS comes built to support RLE compression but not ZLIB. The manual for SSL (HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS) says that support for ZLIB can be especially enabled during compilation, but doesn't say how to accomplish this. See the documentation at <A href="http://h71000.www7.hp.com/doc/83FINAL/BA554_90007/rn03re195.html" target="_blank">http://h71000.www7.hp.com/doc/83FINAL/BA554_90007/rn03re195.html</A> <BR /><BR />I've downloaded HP's source kit and have done a default (RLE compression only) rebuild but it isn't very obvious how to do the rebuild with ZLIB enabled.<BR /><BR />If someone else has done this could you tell me how? Meantime I'll continue to look at the source kit's build procedures.<BR /><BR />Fortunately I have a support agreement and HP supports this software. I'm also asking them if they know how to do this.<BR /><BR />If I learn anything and anyone's interested, I'll post the details. Mon, 04 Feb 2008 15:09:29 GMT Galen Tackett 2008-02-04T15:09:29Z https://community.hpe.com/t5/operating-system-openvms/rebuilding-ssl-with-zlib-support/m-p/4139864#M13985 HP SSL Version 1.3 for OpenVMS comes built to support RLE compression but not ZLIB. The manual for SSL (HP Open Source Security for OpenVMS Volume 2: HP SSL for OpenVMS) says that support for ZLIB can be especially enabled during compilation, but doesn't say how to accomplish this. See the documentation at <A href="http://h71000.www7.hp.com/doc/83FINAL/BA554_90007/rn03re195.html" target="_blank">http://h71000.www7.hp.com/doc/83FINAL/BA554_90007/rn03re195.html</A> <BR /><BR />I've downloaded HP's source kit and have done a default (RLE compression only) rebuild but it isn't very obvious how to do the rebuild with ZLIB enabled.<BR /><BR />If someone else has done this could you tell me how? Meantime I'll continue to look at the source kit's build procedures.<BR /><BR />Fortunately I have a support agreement and HP supports this software. I'm also asking them if they know how to do this.<BR /><BR />If I learn anything and anyone's interested, I'll post the details. Mon, 04 Feb 2008 15:09:29 GMT https://community.hpe.com/t5/operating-system-openvms/rebuilding-ssl-with-zlib-support/m-p/4139864#M13985 Galen Tackett 2008-02-04T15:09:29Z https://community.hpe.com/t5/operating-system-openvms/rebuilding-ssl-with-zlib-support/m-p/4139865#M13986 A quick look at the source of OpenSSL 0.9.8g seem to indicate that you only need to compile crypto/comp/c_zlib.c file and include it into the libcrypto library.<BR /><BR />JF Mon, 04 Feb 2008 16:32:09 GMT https://community.hpe.com/t5/operating-system-openvms/rebuilding-ssl-with-zlib-support/m-p/4139865#M13986 Jean-François Piéronne 2008-02-04T16:32:09Z