Thanks for your reply,

So, what to do ?

1] apt-get remove open-ssl, then compile the 1.0.1c ?

2] specify the the lib path in the configure ?

3] ?

--

I succeed to compile it, but it was another machine, another NginX version and another SPDY patch, and I don't really know what are the differences that could produce these errors. I just know OpenSSL version was the same : 1.0.1c. And it was installed in the same way, on a 0.9xx-something :

OPENSSL_VERSION='1.0.1c'
cd /usr/local/src
sudo rm -fr openssl-$OPENSSL_VERSION
sudo wget -O openssl-$OPENSSL_VERSION.tar.gz "http://www.openssl.org/source/openssl-$OPENSSL_VERSION.tar.gz"
sudo tar -xvzf openssl-$OPENSSL_VERSION.tar.gz
sudo rm -fr openssl-$OPENSSL_VERSION.tar.gz
cd openssl-$OPENSSL_VERSION
sudo ./config threads \
zlib \
--prefix=/usr \
&& sudo make && sudo make install && cd /usr/local/src
sudo rm -fr openssl-$OPENSSL_VERSION