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Stupid questions about MULTILIB_EXCEPTIONS etc.
- From: Frank Juergen-r58616 <Juergen dot Frank at freescale dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Thu, 5 Jan 2006 10:57:03 +0100
- Subject: Stupid questions about MULTILIB_EXCEPTIONS etc.
Hi !!
I want to use the MULTILIB feature for my powerpc gnu compiler. The question is how I have to work with this key words ?
The only info which I has found is the paper http://gcc.gnu.org/onlinedocs/gccint/Target-Fragment.html , but I need mor info and I didn't find every keyword which I found in serveral t-files. (e.g. MULTILIB_HARDFLOAT_ONLY and MULTILIB_SOFTFLOAT_ONLY (see gcc/config/rs6000/t-rtems ) )
Another important point for me are the meening of the asterisks ('*').
So how can explain the following line
MULTILIB_EXCEPTIONS = ...
mcpu=7400/maltivec \
*mcpu=7400/*mspe=no*
...
How I should decode the asterisk befor the mcpu option and why has the mspe=no option two asterisks ???