configure: error: C preprocessor fails sanity check
compiler-errors, configure, icc, linux
Solution
The problem may well be that the GNU make implicit variable that denotes "your C++ compiler" is not `CPP` but `CXX`, whereas `CPP` is the implicit variable that denotes "your C preprocessor"; so your
export CPP=/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
tells `configure` that icpc is the preprocessor and leaves `CXX` presumably defaulting to g++.
This is supported by the `./configure` error:
checking how to run the C preprocessor... /opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
Try:
export CXX=/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
or just:
./configure CXX=/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc
Problem
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: ``` export CC=/opt/intel/composer_xe_2013.2.146/bin/intel64/icc export CPP=/opt/intel/composer_xe_2013.2.146/bin/intel64/icpc ``` Then I run `./configure` and got the following error: ``` 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 ``` The config log file contains this error: ``` 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 <limits.h> | #else | # include <assert.h> | #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) ``` What can be wrong here?