gcc predefined constants

[david_gordon]

Sorry if this deserves an RTFM-type response, but I've hunted around the boards and can't even find an example of anyone else having the same problem.

All I want to do is slot in icpc in place of g++ but when I set -cxxlib-gcc and -gcc-version=331 I get lots of errors about undefined constants, e.g:

/usr/local/gcc/include/c++/3.3.1/limits(280): error: identifier "__CHAR_BIT__" is undefined
static const int digits = __glibcpp_digits (char);
^

/usr/local/gcc/include/c++/3.3.1/limits(330): error: identifier "__CHAR_BIT__" is undefined
static const int digits = __glibcpp_digits (signed char);
^

/usr/local/gcc/include/c++/3.3.1/limits(326): error: identifier "__SCHAR_MAX__" is undefined
{ return -__SCHAR_MAX__ - 1; }
^

/usr/local/gcc/include/c++/3.3.1/limits(328): error: identifier "__SCHAR_MAX__" is undefined
{ return __SCHAR_MAX__; }
^

/usr/local/gcc/include/c++/3.3.1/limits(380): error: identifier "__CHAR_BIT__" is undefined
static const int digits = __glibcpp_digits (unsigned char);
^

/usr/local/gcc/include/c++/3.3.1/limits(378): error: identifier "__SCHAR_MAX__" is undefined
{ return __SCHAR_MAX__ * 2U + 1; }
^


What am I not doing?

thanks,

David

[TimP]

I suspect that it wants version=330 for any 3.3.x g++ library.

[John_O_Intel]

Hi David,

This is now supported. The initial icc 8.0 release didn't support compatibility with gcc 3.3.x. icc package l_cc_pc_8.0.058 and later will support this.

$ icc -V
Intel C++ Compiler for 32-bit applications, Version 8.0 Build 20031231Z Package ID: l_cc_pc_8.0.058

Here is the command line I've used to point gcc 3.3 that isn't in my path.

icc -gcc-version=332 -gcc-name=/usr/local/gcc-3.3.2/bin/gcc foo-main.cpp -cxxlib-gcc foo.o

Regards,

John O'Neill