Fix missing 'errno' definition.

[Naum-PDFTron]

Description

Compiling on Linux Docker image with gcc4.8 reports missing 'errno'. Included 'cerrno'.

Changelog entry

N/A

[michaelonken]

Does including also work for you if you put it below the osconfig.h include, e.g. before the windows.h include #ifdef?

We want osconfig.h to be the first include in any DCMTK file.

[Naum-PDFTron]

It doesn't matter where it is put. I thought system includes go first. Here what we are getting:

I can modify it and put it where you decide.

[michaelonken]

I realized that your branch is still using an old DCMTK commit from March.

Meanwhile the related file has already been fixed regarding errno by starting like this:

#include "dcmtk/config/osconfig.h"

#include "dcmtk/ofstd/ofchrenc.h"
#include "dcmtk/ofstd/ofstd.h"
#include "dcmtk/ofstd/ofdiag.h"
#include "dcmtk/ofstd/ofconsol.h"
#include <cerrno>

Thanks for the report anyway.