Cppcheck 2.4.1 is unable to get compiler specific defines

[Krishna]

Hi,
We have a macro which are defined based on the toolchain(CC_ARM, __ARMCC_VERSION, __GNUC, ICCARM Etc). below is the snippet of how it is defined.

#if defined(ICCARM)
#define DISABLE_WARNING(x) DO_PRAGMA(diag_suppress = x)
#endif

And passing compile_commands.json to the cppcheck and seeing the error
DISABLE_WARNING(WARN_UNALIGNED_STRUCT)<--- There is an unknown macro here somewhere. Configuration is required. If DISABLE_WARNING is a macro then please configure it.

This issue is not appearing with cppcheck 1.88 version. if I add manually -D__ICCARM__ in compile_commands.json it is not throwing any error. This proving that cppcheck unable to get the compiler defined macro -D__ICCARM__.

How to resolve this issue?

[Daniel Marjamäki]

hmm.. could you show a piece of your compile_commands.json?

I guess it's enough with one item in the list. Please attach it so it doesn't get changed by some wiki formatting etc..

[Krishna]

Please find the attachment.

[Krishna]

Hi Daniel,

Can you please reply with suggestions?

[Daniel Marjamäki]

hmm.. I am not sure what to do. One possible quick fix is that you create a file iccarm.cfg :

<?xml version="1.0">
<def format="2">
  <define name="__ICCARM__" value="1"/>
</def>

Then you can add a --library=iccarm.cfg on the command line and Cppcheck should understand this..

But that is a "hack" solution I don't really like it. The --library was not really meant to handle this particular use case. I think we should provide some better configuration.

[Krishna]

Hi Daniel,

Thanks for reply.

Yes, the above solution wouldn't work for us.

This issue is not there in 1.88v. Is this a bug in 2.4.1v?

Is there a way to raise bug to fix?

Thanks.