[Lazarus] Custom OS/CPU targets for FPC - build help

[Sven Barth]

Am 03.01.2012 15:55, schrieb David Unric:
> Lazarus 0.9.31 seems to do not use -P option as it still produces i386
> code even if target CPU family is set to x86_64 in Project options and
> exe is rebuilt from scratch (console app).

Are you sure that it's a 32-Bit application?

> I'd like to ask somebody to shed some light on this subjects:
> 1) why supplying target OS option (-T) fails ? If I'd like to build
> win64 exe on win32 system have I pass CPU Target and fpc "automagically"
> selects appropriate OS Target ?

This is the same problem I mentioned in my other mail. Without the 
"-PXXX" argument fpc selects the i386 compiler which does not know about 
the win64 target, thus the error.

> 2) How to tweak Lazarus so I can simply switch between win32/win64 targets ?
> I'd appreciate any hint.

Normally this works by changing the CPU family in the compiler options. 
Are you sure that you've set Lazarus to use the correct compiler?

Regards,
Sven