Deprecated header warning

[Sameer]

I had made a small modification to a few core files NS 3.15. Everything was working fine till today. I ran waf again and bam i get this error

 

In file included from /usr/include/c++/5.1.0/ext/hash_map:60:0,

                 from ./ns3/sgi-hashmap.h:24,

                 from ./ns3/network-module.h:57,

....

error: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. [-Werror=cpp]

What I dont get it till a couple of days ago everything was fine.... and now suddenly this

I use Arch Linux. Could it be bacuse of an upgrade to gcc or something

This is driving me crazy!

Any help will be appreciated!

[Sameer Gurung]

Ok this could be that Arch gcc is upgraded to 5.1 which uses gnu11 by default.

Apparently one needs to add -std=gnu89 command-line option to revert back to the earlier standard by using CFLAGS

Anyone can help me with how I can pass this to the build system in NS3.

Thanks you all

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[pdbarnes]

I think you need to add CFLAGS=... (and/or CXXFLAGS=...) to your configure command:

$ ./waf configure CFLAGS...

Peter

[Sameer]

Thank you will try that!

[Matt Anonyme]

I wonder if it works with CFLAGS after the command ? Shouldn't it be before like:
$ CFLAGS=... ./waf configure

[Sameer Gurung]

The before method works!