OpenVPN installation trouble

Posted on 2004-11-02
Last Modified: 2012-06-27
Hi All,

I am having some trouble installing OpenVPN.  I've had no success finding support at or any other site.  I have succesfully installed the latest LZO compression libraries and OpenSSL.  However, when I ./configure I get the error messages:

configure: checking for OpenSSL Crypto Library and Header files...
checking openssl/evp.h usability... no
checking openssl/evp.h presence... no
checking for openssl/evp.h... no
configure: error: OpenSSL Crypto headers not found.

I have located the evp.h include file and also tried the following:

./configure --with-ssl-headers=/usr/local/ssl/include/openssl

which points to the location of where the evp.h file resides.  Still no success.  Any help would be very much appreciated!!

Linux Dist - Mandrake 10

Question by:tonydm
    LVL 17

    Accepted Solution

    Configure is checking for the headers in oppenss/ so it would be worth leaving it off the end of your configure command ie
    /configure --with-ssl-headers=/usr/local/ssl/include/

    Author Comment

    Thanks owensleftfoot,

    that did the trick!  Although I got another error;

    configure: checking for OpenSSL Crypto Library and Header files...
    checking openssl/evp.h usability... yes
    checking openssl/evp.h presence... yes
    checking for openssl/evp.h... yes
    checking for EVP_CIPHER_CTX_init in -lcrypto... no
    configure: error: OpenSSL Crypto library not found.

    Author Comment

    An added note:

    I tried this with no success:

    ./configure --with-ssl-headers=/usr/local/ssl/include/ --includedir=/usr/include

    Where the /usr/include points to the parent directory of the location of the /KerberosIV/krb.h file.

    Didn't work! :(
    LVL 6

    Expert Comment

    up2date/yum openssl-devel

    Do you have the openssl-devel rpm installed ?

    Please check and if not installed, install and give it another try.

    Expert Comment

    I am also facing this same problem. I have install openssl-devel rpm now the problem rectified. \
    Thanks admin0.

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