Re: [gentoo-amd64] -fPIC - Toolchain broken?

[Simon Stelling <blubb@gentoo.org>]

Sebastian Redl wrote:
> Hi,
	>
> While trying to compile OpenOffice.org, I was blocked by the inability
> to compile icu-3.4.1.
> The compilation fails on linking the third library it tries to build,
> libicui18n.so, with this message:
> 
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.1/../../../../x86_64-pc-linux-gnu/bin/ld:
> warning: creating a DT_TEXTREL in object.
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.1/../../../../x86_64-pc-linux-gnu/bin/ld:
> ucol_wgt.o: relocation R_X86_64_PC32 against `compareRanges' can not be
> used when making a shared object; recompile with -fPIC
> /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.1/../../../../x86_64-pc-linux-gnu/bin/ld:
> final link failed: Bad value
> collect2: ld returned 1 exit status

It worked fine on my working system (CFLAGS="-O2 -march=opteron -pipe"), 
but failed the same way in my development chroot (CFLAGS="-ggdb 
-march=k8 -pipe").

I didn't look at the code yet, but I guess it has some #ifndef 
__OPTIMIZED__. __OPTIMIZED__ is set by gcc with -O2 and above. I guess 
if you switch back to your -O3 CFLAGS it will compile.

> I even manually removed the previously built libraries (libicudata.so
> and libicuuc.so) and relinked them with -fPIC, although I don't even
> know whether the flag has any influence on linking. Same error.

-fPIC only affects compilation

> I have the same problem when manually trying to compile any
> Mozilla-based application. However, most programs and libraries build
> fine - I just finished merging KOffice without any problems.

> 
> So, is my toolchain screwed up? Am I doing something wrong? Is the icu
> ebuild simply broken?

I have exactly the same versions of binutils in both working and 
development system and never had problems, so I'd say all is fine on 
your side. We'll have to fix the ebuild I guess.

-- 
Kind Regards,

Simon Stelling
Gentoo/AMD64 developer
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