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From: Ben Peddell <killer DOT lightspeed AT bigpond DOT com>
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Subject: Re: obtaining GCC -march setting in code?
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Date: Fri, 14 Nov 2003 06:57:45 GMT
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nospam AT none DOT com wrote:
> Is there a way to get the gcc's -march=XXX and -mfpmath=YYY type in
> the c/c++ code?
> 
> I want the code to be able to output something like:
> 
> built for "pentium3" with "sse"....
> 
> Basically something telling the user how the program is compiled and
> for what platform...
> 
> Thanks.
> 
> Raymond

The following examples assume that you want to just compile it, and link 
it later.

Either include a comment saying:
/*
  * Compile with
  * gcc -march=pentium3 -mfpmath=sse -c your_code.c
  */

Or concoct a Makefile: (I've put it in printf format, since it contains 
embedded tabs.)

"your_code.o:\n"
"\tgcc -march=pentium3 -mfpmath=sse -c your_code.c\n"

I don't know of any compiler pragmas that would do what you want.