> -----Original Message-----
> From: Leopold Toetsch [mailto:[EMAIL PROTECTED]
> Sent: Thursday, May 06, 2004 11:49 PM
> To: Adam Thomason
> Cc: [EMAIL PROTECTED]
> Subject: Re: [perl #29257] Build libnci.so by default
>
>
> Adam Thomason <[EMAIL PROTECTED]> wrote:
>
> > amd64 breaks. Shared libraries must be compiled with -fPIC; see
> > http://www.x86-64.org/lists/discuss/msg02621.html for why.
> LD_SHARED
> > has the flag, but nci_test.o isn't compiled with it.
>
> Well, then we have to add $(LD_SHARED).
>
> > needs to be a CC_SHARED as well?
>
> You are thinking of many object files that are linked
> together as a shared lib?
It's not the library that's the trouble, it's the contained objects. If
they aren't all compiled as PIC, the linker refuses to build a shared
library ("src/nci_test.o: relocation R_X86_64_32 can not be used when
making a shared object; recompile with -fPIC"). Since nci_test.o is
compiled with the default make rule for .c files, the flag isn't
included unless -fPIC is in CFLAGS...
>
> > ... -fPIC isn't desirable where
> > unecessary, so it shouldn't be the default for every Linux,
> > certainly... does this belong in the cpu/ tests?
>
> config/gen/cpu/* is more intended for generated files. I
> think a similar thing should be in config/auto/cpu/* for
> feature tests.
>
... but that's not required in the general case (i.e., the rest of
parrot's sources). Therefore, the building of nci_test.o (and in the
future, any other object linked into libnci.so) needs a specific
makefile rule that uses -fPIC or its equivalent, depending upon the
compiler and platform.
Adam
