[fpc-pascal] arm big endian questions and info

[Daniël Mantione]

Op Mon, 26 Feb 2007, schreef Henry Vermaak:

> hi all
> 
> i managed to build a ppcarm (msb) over the last couple of days.  there
> were a couple of problems, most problematic of which were that the
> compiler (ppccrossarm at that stage) seemed to go into a weird "state"
> when trying to compile the gtk and gtk2 packages (can't remember
> specific files now).  running top showed that it appeared to be
> working, but it never finished (given 10 or 20 minutes), so had to be
> aborted.  i just hacked the makefile to exclude those packages, since
> i don't need them anyway.  this is just for info, really.  i used fpc
> 2.0.4 and i guess i really should've used latest svn.
> 
> demo programs and such worked well, i could link to my shared libs
> that were built with gcc and everything goes well until i try some
> floating point math - at which point it hangs.  the arm processor that
> i'm using doesn't have an fpu and i had to use a libgcc emulation when
> i built my shared libs with gcc, so i guess i need to do the same
> thing with ppcarm (i noticed the -Cf<xx> option).
> 
> will i need to re-build my ppcarm and the units to use libgcc floating
> point emulation?  if so, how would i do that?  (a simple
> OPT="-CfLIBGCC" doesn't work on the make command line, since it tries
> to pass it to ppc386 which doesn't support that option).  if i just
> compile my program with -CfLIBGCC then it comes up with "Fatal:
> Internal error 200308251".

FPC cannot use libc for fpu emulation.

> also, is the "SOFT" option complete in latest fpc?  this would
> probably save me lots of trouble.

Yes, softfpu should work on ARM.

Daniël