Is it possible with -Wall but only display warnings in specific files?

Question

I am writing a project in C using GCC 4.8 and I would like to see all the warnings (hoping to eliminate them) but the problem is I am #including some old, not maintained library which gives me huge wall of warnings in reaction to -Wall option. There is no way I fix those and I just want to ignore it focusing on code I actually write/maintain.

So can I:

gcc -Wall-excluding-OldBlackBox.c -myproject.c ?

@AdamBurry not ontopic, that article is about doing it through #pragmas, and here he asks for doing that through gcc parameters — pampeho
– pampeho, Commented Sep 4, 2013 at 19:31
@Zupoman unfortunately I do not think the flag he wants exists. — Adam Burry
– Adam Burry, Commented Sep 4, 2013 at 19:34
@Adam Burry - doing this by #pragmas would be good enough but I can't see an option to disable specific files (and not only kind of warnings) anywhere in answers to the thread you linked. Or maybe I can just disable all the warnings at the beginning and enable them back at the end of the blackbox.c file ? — Piotr Lopusiewicz
– Piotr Lopusiewicz, Commented Sep 4, 2013 at 19:38
Are you really #including one .c file in another? That's almost never a good idea. — Nigel Harper
– Nigel Harper, Commented Sep 4, 2013 at 20:04

KevinDTimm · Accepted Answer · 2013-09-04 19:40:07Z

2

Update your makefile so that you have a different gcc -Wxxx line for different files (or groups of files)

result.exe : xxx.o yyy.o
   gcc -o result.exe xxx.o yyy.o

xxx.o : xxx.c
   gcc -Wall xxx.c

yyy.o : yyy.c
   gcc -W yyy.c

answered Sep 4, 2013 at 19:40

KevinDTimm

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Piotr Lopusiewicz Over a year ago

Well I don't have a make file right now (amateur Windows programmer with bad habits) but it may be reason good enough to make one :)

Gangadhar · Accepted Answer · 2013-09-04 19:50:03Z

1

first create individual object files and then link them as single Executable.

//compilation with warnings        and   compilation without warnings  
gcc -Wall file1.c file2.c -o foo.o && gcc -w file3.c file4.c -o foo1.o 


gcc -o final foo.o foo1.o

answered Sep 4, 2013 at 19:50

Gangadhar

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