llvm dev - Jun 2010 - [LLVMdev] Error while compiling mysql using LLVM-gold

On 6 June 2010 13:48, Guoliang Jin <jingl1345 at gmail.com>
wrote:
> Thanks Rafael.
>
> I compiled llvm-gcc by myself, and I can compile mysql now.
>
> Right now, when I run llvm-gcc a.c -emit-llvm -use-gold-plugin -Wl,debug
> I got
> ld: error: cannot open debug: No such file or directory
> collect2: ld returned 1 exit status
>
> I do not know why this is happening.
It Is -Wl,-debug. Sorry about that.

Cheers,
-- 
Rafael Ávila de Espíndola

Rafael Espindola wrote:
> On 6 June 2010 13:48, Guoliang Jin <jingl1345 at gmail.com> wrote:
>   
>> Thanks Rafael.
>>
>> I compiled llvm-gcc by myself, and I can compile mysql now.
>>
>> Right now, when I run llvm-gcc a.c -emit-llvm -use-gold-plugin
-Wl,debug
>> I got
>> ld: error: cannot open debug: No such file or directory
>> collect2: ld returned 1 exit status
>>
>> I do not know why this is happening.
>>     
>
> It Is -Wl,-debug. Sorry about that.
>
> Cheers,
>   
Thanks Rafael. With the local compiled llvm-gcc, it compiles now, and 
"-Wl,-debug" gives reasonable output. However, I still do not see the 
bitcode file for those large software like apache while complied using 
the gold plugin...

> Thanks Rafael. With the local compiled llvm-gcc, it compiles now, and
> "-Wl,-debug" gives reasonable output. However, I still do not see
the
> bitcode file for those large software like apache while complied using the
> gold plugin...
Normally it is all done in the plugin. Are you passing -emit-llvm to
llvm-gcc? If so, running file in one of the .o should show "data" and
you can get a combined bitcode file by passing
-Wl,-plugin-opt=also-emit-llvm to the final link line. So if you do

gcc a.o b.o -o foo -Wl,-plugin-opt=also-emit-llvm

you will get two files, foo and foo.bc. The first one is an elf file,
the second one is bitcode.

Cheers,
-- 
Rafael Ávila de Espíndola