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Hi,
I mostly use Visual C++ which gives you a C#### or LKN#### number that you can refer to on the MSDN to get more info about a certain error or warning...
I'm trying to compile some code (that I didn't write) on Linux with gcc (with the -Wall option) and I'm wondering if there is a good site that gives more details about the warnings I'm getting?
This may give you a start:
http://icecube.wisc.edu/%7Edglo/gcc-warnings.html
I usually just do a search with the warning text within double-quotes.
Can you give an example of a confusing warning you've seen? I find that GCC's warnings are usually quite good.Quote:
Originally Posted by cpjust
Seems like some other people are looking for a "definitive list of gcc compiler warning messages" as well.
http://groups.google.com/group/gnu.g...59d94e600261d1
http://groups.google.com/group/gnu.g...80f4b29203344e
http://groups.google.com/group/gnu.g...cc15001476d508
http://groups.google.com/group/gnu.g...0a43b1c7513516
Don't bother clicking on the links -- no one ever found anything.
I think that the best way to learn about GCC's warnings is to do what the previous posters in this thread suggested.
They didn't look that hard:Quote:
Originally Posted by dwks
http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc.pdf
page 40 or so starts listing the options for what warnings you can enable/disable with -Wsomething.
And there is of course always THE BEST documentation: The source code :-)
--
Mats
>And there is of course always THE BEST documentation: The source code :-)
The most accurate, perhaps, but have you ever tried reading gcc's source code?
But that doesn't actually tell you what the text for actual errors and warnings mean, which I think is what the OP was looking for, and what the people in my links were seeking.Quote:
Originally Posted by matsp
[edit]No, but something I was reading recently said this:Quote:
>And there is of course always THE BEST documentation: The source code :-)
The most accurate, perhaps, but have you ever tried reading gcc's source code?
[/edit]Quote:
The problem is that looking at implementations like Python (quite complex), Java (very complex), or GCC (something beyond merely very complex), reveals too much detail to easily uncover the big picture.
That's when you know the warnings you want and you want to specify them. I think the OP wants an explanation of the warnings emitted when you don't know them.Quote:
Originally Posted by matsp
For example, I searched for "initialization discards const from pointer target type" in the manual and it turned up nothing; not even for "initialization discards". It found "discards" twice.
>reveals too much detail to easily uncover the big picture.
That depends on your definition of "the big picture" and what you're really looking for.
Maybe I should have made the smiley about 36 points in size. I was meaning to be completely sarcastic with that comment.Quote:
Originally Posted by dwks
I agree with whoever it was that said that gcc is well beyond very complex. I have looked at portions of the code, and even with some good indications from someone extremely familiar with that code, it was still hard to understand. It is, certainly, not a good way to find out why the compiler says "initialization discards const".
--
Mats
Thanks, I guess I'll just have to Google any errors that I can't figure out. :(
All the warnings I've gotten so far were pretty easy to understand and fix. I was just hoping there was a good resource like the MSDN for gcc, just in case I get a tougher error later...
>I have looked at portions of the code, and even with some good indications from someone
>extremely familiar with that code, it was still hard to understand.
Compilers are one of the more complex programs one can write, and open source code tends to be exceptionally obtuse.
>I was just hoping there was a good resource like the MSDN for gcc, just in case I get a tougher error later...
There are newsgroups and mailing lists. You're most likely to get a good answer from the experts there. However, with code examples, we can probably help you as well.
Yeah, I usually get pretty good answers too; I just didn't want to waste people's time asking a question if there was a good site available where I could find the answer myself.Quote:
There are newsgroups and mailing lists. You're most likely to get a good answer from the experts there.
Hey, maybe that would be a good project for someone -- setting up a 'GSDN' site. ;)