Help with LTO linking in gcc 4.6.0

[Patrick Oppenlander]

On 05/04/11 14:49, Ian Lance Taylor wrote:
> Patrick Oppenlander<pattyo.lists@gmail.com>  writes:
>
>> $ powerpc-eabispe-gcc -nostdlib -flto -fuse-linker-plugin -Os -o prog
>> main.o foo.o crt0.o `powerpc-eabispe-gcc -print-libgcc-file-name`
>> /tmp/ccJRW7xo.ltrans0.ltrans.o: In function `_Z3fooi.constprop.0.1466':
>> ccJRW7xo.ltrans0.o:(.text+0x74): undefined reference to `_rest32gpr_30_x'
>> collect2: ld returned 1 exit status
>>
>> This problem does not occur if -nostdlib isn't specified. This
>> suggests to me that gcc is somehow handling libgcc differently if it
>> is specified on the command line??
>>
>> Is this my (stupid?) error or have I stumbled across a gcc bug?
> What version of the GNU binutils are you using?  There have been several
> bugs in this area, and the fix is in the GNU linker and how it interacts
> with plugins.  Try using the latest development version of the GNU
> binutils.  If that doesn't help, file a bug report at
> http://sourceware.org/bugzilla with a complete self-contained test case.
>
> Ian
Same problem with binutils 2.21.51.

I'll file a bug report.

Thanks for your help,

         Patrick