Re: [Olena-patches] oln-0.10 10.228: Fix C++ compiler identification - Olena-patches

4 Jul 2006

On 2006-07-04, Roland Levillain &lt;roland(a)lrde.epita.fr&gt; wrote:
...

 	Fix C++ compiler identification.

 	* config/oln.m4 (AC_CXX_FLAGS): Check for the Intel C++ compiler
 	before the GNU C++ compiler.

 Index: 10.227/config/oln.m4
 --- 10.227/config/oln.m4 Fri, 30 Jun 2006 16:51:46 +0200 levill_r (oln/j/15_oln.m4
1.38.1.12 600)
 +++ 10.227(w)/config/oln.m4 Tue, 04 Jul 2006 11:33:53 +0200 levill_r (oln/j/15_oln.m4
1.38.1.12 600)
 @@ -465,15 +465,19 @@
  # specifications.

  # This macro checks for the following compilers :
 +#   - Intel C++ (icpc)
  #   - GNU C++ (g++)
  #   - Sun WorkShop C++ (Sun/CC)
 -#   - Intel C++ (icc)
  #   - Comeau C++ (como)
  # and sets the following autoconf variables:
  #   CXXFLAGS_DEBUG
  #   CXXFLAGS_STRICT
  #   CXXFLAGS_STRICT_ERRORS
  #   CXXFLAGS_OPTIMIZE
 +#
 +# The Intel C++ compiler is checked before the GNU C++ compiler,
 +# because our test for the latter recognizes the former as G++ (i.e.,
 +# icpc defines __GNUC__).  Perhaps we should use another test for G++.

First off, I thought about using __GNUG__ but icpc also defines it :(

__GNUG__
    The GNU C compiler defines this when the compilation language is C++; use
    `__GNUG__' to distinguish between GNU C and GNU C++.

icpc defines the following:

#define __GNUG__ 3
#define __GNUC__ 4
#define __GNUC_MINOR__ 0
#define __VERSION__ "Intel(R) C++ gcc 3.0 mode"

How about grepping the result of icpc -E?

<<<< test.cc <<<<
__VERSION__
...

>>>>>>>>>>>>>>>> 
if icpc -E test.cc | grep -i intel >/dev/null; then
  echo 'ICPC'
else
  echo 'Try something else :)'
fi

-- 
SIGOURE Benoit aka Tsuna
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