I am trying to compile MonetDB-11.3.7 on Ubuntu 10.04 distribution (2.6.32-33 64 bit kernel). It fails with "openssl" not found error: I am running configure script with following options: $ ./configure --prefix=/work2/MonetDB-install-11.3.7 --enable-optimize --enable-sql --enable-monetdb5 <snip> checking for iconv... yes checking for working iconv... yes checking for iconv declaration... extern size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); checking for library containing uuid_generate... no checking for openssl... no configure: error: OpenSSL library not found but required for MonetDB5 $ openssl libraries are present on my system. I tried: $ cd /lib $ ll *ssl* -rw-r--r-- 1 root root 333856 2011-02-09 20:50 libssl.so.0.9.8 $ $ $ sudo apt-get install openssl Reading package lists... Done Building dependency tree Reading state information... Done openssl is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. $ Can someone please let me know if I am missing any step or need to do something else for the configure script to find SSL libraries? Thanks in anticipation. Medha