title: How to compile Clisp 2.46?
body: <p>When I try to compile the newest version of Clisp on Ubuntu 8.04 I always get this error after running configure:</p>
  
  <pre><code>Configure findings:
  FFI:        no (user requested: default)
  readline:   yes (user requested: yes)
  libsigsegv: no, consider installing GNU libsigsegv
  ./configure: libsigsegv was not detected, thus some features, such as
  generational garbage collection and
  stack overflow detection in interpreted Lisp code
  cannot be provided.
  Please do this:
    mkdir tools; cd tools; prefix=`pwd`/i686-pc-linux-gnu
    wget http://ftp.gnu.org/pub/gnu/libsigsegv/libsigsegv-2.5.tar.gz
    tar xfz libsigsegv-2.5.tar.gz
    cd libsigsegv-2.5
    ./configure --prefix=${prefix} &amp;&amp; make &amp;&amp; make check &amp;&amp; make install
    cd ../..
    ./configure --with-libsigsegv-prefix=${prefix} --with-readline --with-unicode --with-module=i18n --with-module=gdbm --with-module=pcre --with-module=readline --with-module=regexp
  If you insist on building without libsigsegv, please pass
    --ignore-absence-of-libsigsegv
  to this script:
    ./configure --ignore-absence-of-libsigsegv --with-readline --with-unicode --with-module=i18n --with-module=gdbm --with-module=pcre --with-module=readline --with-module=regexp
  </code></pre>
  
  <p>I've tried doing as requested, but it didn't help: it seems to ignore the <code>--with-libsigsegv-prefix</code> option. I also tried putting installing libsigsegv in a standard location (<code>/usr/local</code>). Oh, and of course, Ubuntu tells me that libsigsegv and libsigsegv-dev are installed in the system.</p>
  
  <p>I'd really like to be able to compile this version of Clips, as it introduces some serious improvements over the version shipped with Ubuntu (I'd also like to have PCRE).</p>