Strange linking error

Strange linking error

[Erik Leunissen]

I perceive an incompatibility with the following linker options when 
linking an object file into a shared object (ELF):

     --fatal-warnings
     -Map somefilename (or -M)

When supplying either, the link succeeds, and the link map is written.
In the case of "--fatal-warnings" being supplied (without -Map), there 
are no warnings written to stdout or stderr.
In the case of "-Map" being supplied (without --fatal-warnings), there 
are also no warnings written to stdout or stderr.

When supplying both[*], the link fails, the link map is written 
(identical contents as the successful case), and the following error is 
emitted:

     "collect2: ld returned 1 exit status"

This error message does not say why the exit status is 1, so here is 
where I get lost. Does anybody have a clue what's going on?

Thanks in advance,

Erik Leunissen


[*] below you find the complete invocation of "gcc -v" from make:

gcc -v -shared -Wl,-O2,-x,--fatal-warnings,-s,-Map,./linkmap.$$ -o 
/home/erik/Develop/stealth/bin/linux-x86/foo.so 
/home/erik/Develop/stealth/bin/linux-x86/foo.o 
-Wl,-Bstatic,-L/usr/local/lib,-ltclstub8.4 -Wl,-Bdynamic

Reading specs from /usr/lib/gcc-lib/i586-suse-linux/3.3.1/specs
Configured with: ../configure --enable-threads=posix --prefix=/usr 
--with-local-prefix=/usr/local --infodir=/usr/share/info 
--mandir=/usr/share/man --libdir=/usr/lib 
--enable-languages=c,c++,f77,objc,java,ada --disable-checking 
--enable-libgcj --with-gxx-include-dir=/usr/include/g++ 
--with-slibdir=/lib --with-system-zlib --enable-shared 
--enable-__cxa_atexit i586-suse-linux
Thread model: posix
gcc version 3.3.1 (SuSE Linux)
  /usr/lib/gcc-lib/i586-suse-linux/3.3.1/collect2 --eh-frame-hdr -m 
elf_i386 -shared -o /home/erik/Develop/stealth/bin/linux-x86/foo.so 
/usr/lib/gcc-lib/i586-suse-linux/3.3.1/../../../crti.o 
/usr/lib/gcc-lib/i586-suse-linux/3.3.1/crtbeginS.o 
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.1 
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.1/../../../../i586-suse-linux/lib 
-L/usr/lib/gcc-lib/i586-suse-linux/3.3.1/../../.. -O2 -x 
--fatal-warnings -s -Map ./linkmap.8837 
/home/erik/Develop/stealth/bin/linux-x86/foo.o -Bstatic -L/usr/local/lib 
-ltclstub8.4 -Bdynamic -lgcc -lc -lgcc 
/usr/lib/gcc-lib/i586-suse-linux/3.3.1/crtendS.o 
/usr/lib/gcc-lib/i586-suse-linux/3.3.1/../../../crtn.o
collect2: ld returned 1 exit status
make: *** [/home/erik/Develop/stealth/bin/linux-x86/foo.so] Error 1

== end of message ==

Re: Strange linking error

[Alan Modra]

On Thu, Jul 13, 2006 at 12:17:05AM +0200, Erik Leunissen wrote:
> I perceive an incompatibility with the following linker options when 
> linking an object file into a shared object (ELF):
> 
>     --fatal-warnings
>     -Map somefilename (or -M)

See http://sources.redhat.com/bugzilla/show_bug.cgi?id=609

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre

Re: Strange linking error

[Erik Leunissen]

Alan Modra wrote:
> On Thu, Jul 13, 2006 at 12:17:05AM +0200, Erik Leunissen wrote:
>> I perceive an incompatibility with the following linker options when 
>> linking an object file into a shared object (ELF):
>>
>>     --fatal-warnings
>>     -Map somefilename (or -M)
> 
> See http://sources.redhat.com/bugzilla/show_bug.cgi?id=609
> 

Right.

Thanks,

Erik
====