Qt5 MinGW build error: '_fileno' was not declared

Jake007

Hi!

I'm trying to build Qt5 shared, as I can't stand those enormous icuu libraries.
But I'm having problem building it.

This is an error that I get:
@main.cpp: In member function 'virtual QVariant PatternistApplicationParser::defaultValue(const QApplicationArgument&) const':
main.cpp:196:36: error: '_fileno' was not declared in this scope
mingw32-make[4]: *** [.obj/release_shared/main.o] Error 1
mingw32-make[4]: Leaving directory 'C:/Dev/Qt5/Qt5_MinGW_Shared/qtxmlpatterns/tools/xmlpatterns'@

Happens with static and shared build on Windows 7 and Windows 8, both 64-bit.
I'm using MinGW 4.7.2 32-bit.
I followed the tutorial "here":http://qt-project.org/wiki/Building_Qt_5_from_Git: building Qt5 from git, and added -no-webkit flag and -opengl desktop.

Search didn't throw me any useful results.

Regards,
Jake

chipsman

Hi!

Are they someone to help? I have exactly the same problem.

I noticed that the compiler uses the strict ansi norm, so the _fileno function is not defined. Commenting
@#ifndef STRICT_ANSI@

and the matching #endif in the stdio.h file is working but very tricky.

Before updating the sources, I never had any problem to compile Qt.

Best regards

kalpa

Hi all!
Had the same problem.
Does everybody must have to patch stdio.h?

Jake007

Hi!

I didn't patch it.
I downloaded source code from "here":http://qt-project.org/downloads and build this one instead. It builds without any problems.

kalpa

Current git version abort compilation with this error message.

Code_ReaQtor

I have the same problem with the current Qt 5.1 Beta in Windows 7 32-bit using MinGW 4.7

Anybody who solved this problem?

Additional Info: Error is found within <Qt5_directory>/qtxmlpatterns/tools/xmlpatterns/main.cpp

@//from main.cpp
#ifdef Q_OS_WIN
/* If we don't open stdout in "binary" mode on Windows, it will translate
* 0xA into 0xD 0xA. */
_setmode(_fileno(stdout), _O_BINARY);
m_stdout = _wfdopen(_fileno(stdout), L"wb");
out->open(m_stdout, QIODevice::WriteOnly);
#else
out->open(stdout, QIODevice::WriteOnly);
#endif
@

AcerExtensa

Same here. I also get alot warnings about not found generated files within webkit module compilation...

kay_jpr

Iam facing the same error. Building Qt 5.1.1, on windows 8 (32 bit), using mingw32-make .

URGENT help needed !!

josuegomes

This is not a fix but a workaround. I'm not sure if this is a MinGW or Qt issue.
Anyway here we go: modify qt-everywhere-opensource-src-5.1.1/qtxmlpatterns/tools/xmlpatterns/main.cpp
and add before #include "main.h"

#include <stdio.h>
extern "C" {
_CRTIMP int __cdecl __MINGW_NOTHROW _fileno (FILE*);
}

sugi2undip

adding following one line in xmlpatterns\main.cpp before #include "main.h" apparently solve the problem..

#define _fileno(F) ((F)->_file)

hope everybody got same result...