wilson schrieb:

> g++ -DHAVE_CONFIG_H -I. -I. -I../..  -I../.. -I../../source -I../../unix
> -I/Developer/SDKs/MacOSX10.6.sdk/usr/X11/include   -pipe -Wno-multichar -O3
> -march=i686 -mtune=i686 -minline-all-stringops  -c -o fileinputoutput.o `test -f
> 'fileinputoutput.cpp' || echo './'`fileinputoutput.cpp
> fileinputoutput.cpp:1: error: CPU you selected does not support x86-64
> instruction set
> make[3]: *** [fileinputoutput.o] Error 1
> make[2]: *** [all-recursive] Error 1
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2
> 
> The cpu I am running is i686 (apple-darwin10.2.0 system type).  Do I understand
> this error to mean that it is not possible to build povray on this platform?
> Best regards,
> Mark

It /should/ build fine on your system. But somehow the configure script 
seems to have detected a 32-bit ("i686", that is Pentium II or later) 
CPU, while the compiler for some reasons appears to insist that you must 
build for a 64-bit CPU ("x86-64"). (While AMD64-compatible CPUs, aka 
x86-64, are perfectly capable of running 32-bit applications, some 
operating systems aren't.)

Are you sure your CPU is "only" a 32-bit CPU? In that case, your build 
system must be pretty whacky.

OTOH, if your CPU /is/ a 64-bit CPU, then it remains to be examined why 
the configure script decided to compile for i686 instead of x86-64.

I'll have a look at the config.log of my own 3.6 build on my Linux 
machine and check. Maybe the configure script is generally unable to 
detect 64-bit CPUs, and it built for i686 on my machine as well, without 
me noticing because my Linux distribution happens to support 32-bit 
applications.

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