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[ptp-user] CDT codan worries
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Hi,
it took me a while to tame CDT codan for a more recent gcc
version. I finally solved my problems, but I am wondering whether
I should enter my "lessons learned" into some FAQ or other
documentation. --- Potentially for CDT rather than PTP ? But I
darkly remember that there are already some Codan entries in one
of the PTP FAQs.
Please advise how I should handle the following information.
I was using Ubuntu 16.04, but people were reporting in various
fora and stackoverflow that they had similar problems with
earlier versions of Ubuntu.
The important thing seems to be that several versions of gcc
are installed on the system. If so, each of them comes with
a separate version of stddef.h. Ubuntu provides /usr/include/
linux/stddef.h, but this file is empty. This may fool Codan in
believing it had found and included stddef.h .
But then Codan still flags "NULL" and "size_t" as undefined.
I was using a cmake_wrapper.sh as external make command in
Eclipse PTP, and CMake got the include path for stddef.h right.
So the compilation step included the right file. But Codan was
still left in the dark.
I had to go to C++General->Paths an Symbols and explicitly add
/usr/lib/gcc/x86_64-linux-gnu/5.4.0/include to point to the right
version of stddef.h . I would think that this path is *not* very
obvious.
--
Mit freundlichen Grüßen / Kind regards
Dr. Christoph Pospiech
High Performance & Parallel Computing
Phone: +49-351 86269826
Mobile: +49-171-765 5871
E-Mail: cpospiech@xxxxxxxxxx
Lenovo (Deutschland) GmbH
Meitnerstr. 9
D-70563 Stuttgart
Geschäftsführung: Bernhard Fauser
Sitz der Gesellschaft: Stuttgart
HRB-Nr.: 25189, AG Stuttgart
WEEE-Reg.-Nr.: DE79679404
