Fwd: gcc does not honor -fno-leading-underscore flag?

[san.temporal@gmail.com]

Brian Dessent wrote:
> san.temporal@gmail.com wrote:
>
>   
>> I do not know how to get rid of the leading underscores in Cygwin. I
>> have other sources compiled in Linux, and they do not have a leading
>> underscore added.
>>     
>
> As I understand it, the -fleading-underscore flag is only useful to add
> a leading underscore for targets that do not have a leading underscore,
> like linux.  It won't accomplish anything on one that already has it,
> like PE.
>   
You may be right. But then this is strange for me. I would guess that 
either -fleading-underscore or -fno-leading-underscore do something, but 
not both doing nothing. So if a target does have a leading underscore 
and then -fleading-underscore does nothing on it (according to what you 
say), then I would expect -fno-leading-underscore removing the underscore.

>> Now my problem is that I have a library with symbol names without a
>> leading underscore. Although the library is for Linux (I do not have a
>> version specific for Cygwin, which would be the ideal solution, and I
>> do not think that I could get it; I don't have the sources), I expect
>> it to work under Cygwin (or at least give it a try), if only I could
>> get my objects to link with its symbols. Even if I am trying to mix
>> objects for different platforms, I guess that there should be a chance
>> to do it by appropriate configuration. The flag
>> -fno-leading-underscore seemed to be the answer, but it did not work
>> for me.
>>     
>
> There is absolutely no way that you can use an object compiled for Linux
> with Cygwin.  The fact that symbols don't have a leading underscore is
> trivial compared to the massive differences between ELF and PE formats. 
> There is just no chance of this working even if you solved the
> underscore issue.
>   
I suspected this, but I was not sure. I do not know what is ELF and 
PE... I though about trying since I have Windows apps that work on 
Cygwin, but possibly they are much more similar.

Thanks a lot.

Santiago


> Brian
>   

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