title: Math::GMP errors when installing
body: <p>Im trying to install <code>Math::GMP</code> but it keeps failing and im not sure where to go from here .  This is what im typing and here is the output pointing to the log file:</p>
  
  <pre><code>[root@confeng Math-GMP-2.06-VEVNp7]# cpanm Math::GMP
  --&gt; Working on Math::GMP
  Fetching http://www.cpan.org/authors/id/T/TU/TURNSTEP/Math-GMP-2.06.tar.gz ... OK
  Configuring Math-GMP-2.06 ... OK
  Building and testing Math-GMP-2.06 ... FAIL
  ! Installing Math::GMP failed. See /root/.cpanm/build.log for details.
  [root@confeng Math-GMP-2.06-VEVNp7]#
  </code></pre>
  
  <p>I checked the logs and im not sure what structure im supposed to have
  here are the logs of <code>/root/.cpanm/build.log</code>  </p>
  
  <pre><code>cpanm (App::cpanminus) 1.5011 on perl 5.008008 built for i386-linux-thread-multi
  Work directory is /root/.cpanm/work/1336128898.6464
  You have make /usr/bin/make
  You have /usr/bin/wget
  You have /bin/tar: tar (GNU tar) 1.15.1
  You have /usr/bin/unzip
  Searching Math::GMP on cpanmetadb ...
  --&gt; Working on Math::GMP
  Fetching http://www.cpan.org/authors/id/T/TU/TURNSTEP/Math-GMP-2.06.tar.gz
  -&gt; OK
  Unpacking Math-GMP-2.06.tar.gz
  Entering Math-GMP-2.06
  Checking configure dependencies from META.yml
  Configuring Math-GMP-2.06
  Running Makefile.PL
  Checking if your kit is complete...
  Looks good
  Writing Makefile for Math::GMP
  -&gt; OK
  Finding PREREQ from Makefile ...
  Building and testing Math-GMP-2.06
  cp lib/Math/GMP.pm blib/lib/Math/GMP.pm
  AutoSplitting blib/lib/Math/GMP.pm (blib/lib/auto/Math/GMP)
  /usr/bin/perl /usr/lib/perl5/5.8.8/ExtUtils/xsubpp  -      typemap /usr/lib/perl5/5.8.8/ExtUtils/typemap -typemap typemap  GMP.xs &gt; GMP.xsc &amp;&amp; mv GMP.xsc GMP.c
  gcc -c   -D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/inc$
  GMP.xs:4:17: error: gmp.h: No such file or directory
  GMP.xs: In function âconstantâ:
  GMP.xs:49: warning: label ânot_thereâ defined but not used
  GMP.c: In function âXS_Math__GMP_new_from_scalarâ:
  GMP.c:93: error: âmpz_tâ undeclared (first use in this function)
  GMP.c:93: error: (Each undeclared identifier is reported only once
  GMP.c:93: error: for each function it appears in.)
  GMP.c:93: error: âRETVALâ undeclared (first use in this function)
  GMP.xs:70: warning: implicit declaration of function âmpz_init_set_strâ
  GMP.c: In function âXS_Math__GMP_new_from_scalar_with_baseâ:
  GMP.c:114: error: âmpz_tâ undeclared (first use in this function)
  GMP.c:114: error: âRETVALâ undeclared (first use in this function)
  GMP.c: In function âXS_Math__GMP_destroyâ:
  GMP.c:133: error: âmpz_tâ undeclared (first use in this function)
  </code></pre>