Need help buiding bfd shared library

[Jan Beulich]

On 03.08.2022 20:59, Potharla, Rupesh wrote:
> [Public]
> 
>> On 03.08.2022 08:49, Potharla, Rupesh wrote:
>>>> On 03.08.2022 08:09, Potharla, Rupesh via Binutils wrote:
>>>>> I am working on building bfd shared library for my code changes. I
>>>>> tried with
>>>> "configure --enable-shared=bfd" but BFD is creating static library
>>>> only even with -enable-shared option .  Did I miss something ? Can
>>>> someone help me with the instructions to build bfd shared library?
>>>>
>>>> Did you try --enable-shared without "=bfd"? So far I wasn't aware of
>>>> that form as an option, and at least a quick inspection of the
>>>> configure script also doesn't suggest that form might exist. But I may be
>> entirely wrong ...
>>>
>>> I tried that option as well and tried with --enable-host-shared combination
>> also but no luck.
>>
>> You may want to inspect configure output then. Here in bfd/config.log I see
>>
>> configure:8674: checking whether the gcc -std=gnu99 linker
>> (/usr/lib/gcc/.../ld) supports shared libraries
>> configure:9745: result: yes
>> ...
>> configure:11365: checking if libtool supports shared libraries
>> configure:11367: result: yes
>> configure:11370: checking whether to build shared libraries
>> configure:11391: result: yes
>> configure:11394: checking whether to build static libraries
>> configure:11398: result: yes
>>
>> I would guess one of these is failing for you, at which point you'd want to
>> figure out why that is.
> 
> None of the above is failing for me. I looked at the config.log file and tried the combination of different options none of them is working. In fact, I don't see a target for libbfd.so in the Makefile.  

Look for a libbfd.la target. There's libtool involved here, and I think
that's the rule where the .so linking happens (at the same time as
the creation of libbfd.a). IOW I suppose all depends on the flags
passed to libtool ...

> configure:11283: checking whether stripping libraries is possible
> configure:11288: result: yes
> configure:11323: checking if libtool supports shared libraries
> configure:11325: result: yes
> configure:11328: checking whether to build shared libraries
> configure:11349: result: yes
> configure:11352: checking whether to build static libraries
> configure:11356: result: yes
> configure:8563: checking for dlfcn.h
> configure:8563: result: yes
> 
> Just out of curiosity is the --enable-shared option really working for others?

Yes (on Linux; on Cygwin the answer would be "no").

Jan

>  Am I missing something during the compilation?
> 
> Regards,
> Rupesh P