title: configure: error: C preprocessor fails sanity check
body: <p>I am compiling several libraries on Ubuntu 12.04 x86_64. First I compiled the libraries with GCC 4.7.2 and it went all well. Then I tryed to recompile them with Inte Composer 2013 u2. Fot that purpose i did:</p>
  
  <pre><code>export CC=/opt/intel/composer_xe_2013.2.146/bin/intel64/icc
  export CPP=/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
  </code></pre>
  
  <p>Then I run <code>./configure</code> and got the following error:</p>
  
  <pre><code>checking how to run the C preprocessor... /opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
  configure: error: in `/var/www/workspace/freetype/freetype-2.4.11/builds/unix':
  configure: error: C preprocessor "/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc" fails sanity check
  See `config.log' for more details
  make: *** [setup] Error 1
  </code></pre>
  
  <p>The config log file contains this error:</p>
  
  <pre><code>configure:3345: checking how to run the C preprocessor
  configure:3415: result: /opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
  configure:3435: /opt/intel/composer_xe_2013.2.146/bin/intel64/icpc  conftest.c
  conftest.c(14): error: identifier "Syntax" is undefined
               Syntax error
               ^
  
  conftest.c(14): error: expected a ";"
  
  compilation aborted for conftest.c (code 2)
  
  configure:3435: $? = 2
  configure: failed program was:
  | /* confdefs.h */
  | #define PACKAGE_NAME "FreeType"
  | #define PACKAGE_TARNAME "freetype"
  | #define PACKAGE_VERSION "2.4.11"
  | #define PACKAGE_STRING "FreeType 2.4.11"
  | #define PACKAGE_BUGREPORT "freetype@nongnu.org"
  | #define PACKAGE_URL ""
  | /* end confdefs.h.  */
  | #ifdef __STDC__
  | # include &lt;limits.h&gt;
  | #else
  | # include &lt;assert.h&gt;
  | #endif
  |            Syntax error
  configure:3435: /opt/intel/composer_xe_2013.2.146/bin/intel64/icpc  conftest.c
  conftest.c(14): error: identifier "Syntax" is undefined
               Syntax error
               ^
  
  conftest.c(14): error: expected a ";"
  
  compilation aborted for conftest.c (code 2)
  </code></pre>
  
  <p>What can be wrong here?</p>