Getting # Physical CPUs

[Walter Bright]

dsimcha wrote:
> Here's the error message I'm getting.  I know basically nothing about make except
> that it's a build system and that it almost never works, so I can't even begin to
> debug this.  Here's the error message I've been getting, on a freshly unpacked
> 2.047 directory on some ancient  Linux distro that my sys admin insists on using:
> 
> $ make -flinux.mak
> make --no-print-directory -f  OS=posix BUILD=release
> make[1]: OS=posix: No such file or directory
> make[1]: *** No rule to make target `OS=posix'.  Stop.
> make: *** [release] Error 2

The "OS=posix" sets the macro OS to the value posix, it does not set the target. 
This has been a feature of make since at least the 1980's, earlier than Linux 
even existed. So I'm astonished you're seeing this error.


> And here's the error I get when I try on a different machine w/ a more modern
> distro (this one is probably due to lack of 64 bit libs):
> 
> $ make -flinux.mak
> make --no-print-directory -f linux.mak OS=posix BUILD=release
> cc -c  -m32 -O3 etc/c/zlib/adler32.c -ogenerated/posix/release/etc/c/zlib/adler32.o
> cc -c  -m32 -O3 etc/c/zlib/compress.c -ogenerated/posix/release/etc/c/zlib/compress.o
> cc -c  -m32 -O3 etc/c/zlib/crc32.c -ogenerated/posix/release/etc/c/zlib/crc32.o
> In file included from /usr/include/features.h:378,
>                  from /usr/include/string.h:26,
>                  from etc/c/zlib/zutil.h:23,
>                  from etc/c/zlib/crc32.c:29:
> /usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory
> make[1]: *** [generated/posix/release/etc/c/zlib/crc32.o] Error 1
> make: *** [release] Error 2

This is most likely because you have not gotten the 32 bit dev system installed 
on your 64 bit system (it usually is not installed by the default linux 
install). Which one do you have?

BTW, using a script rather than make wouldn't have helped you with the second issue.