I failed to build Qt

Gravak

I want to build Qt for my windows machine but it doesn't work.

I entered from a directory called Qt-5.8.0-build "..\Qt-5.8.0-src\configure.bat -debug-and-release -platform win32-g++ -prefix C:\Qt\Qt-5.8.0- bin-x64

But I got some errors:

C:/Qt/Qt-5.8.0-src/qtbase/tools/configure/environment.cpp: In static member function 'static Compiler Environment::detectCompiler()':
C:/Qt/Qt-5.8.0-src/qtbase/tools/configure/environment.cpp:144:50: error: 'KEY_WOW64_32KEY' was not declared in this scope
                                                  KEY_WOW64_32KEY).toLower();
                                                  ^
C:/Qt/Qt-5.8.0-src/qtbase/tools/configure/environment.cpp: In static member function 'static QString Environment::execute(const QString&, int*)':
C:/Qt/Qt-5.8.0-src/qtbase/tools/configure/environment.cpp:389:60: error: '_popen' was not declared in this scope
     FILE *proc = _popen(command.toLatin1().constData(), "r");
                                                            ^
C:/Qt/Qt-5.8.0-src/qtbase/tools/configure/environment.cpp:399:29: error: '_pclose' was not declared in this scope
         int r = _pclose(proc);
                             ^
<builtin>: recipe for target 'environment.o' failed
mingw32-make: *** [environment.o] Error 1

What could I do to make it work?

Thanks for help

![alt text](image url)

koahnig

@Gravak

Did you follow those guidelines?

Gravak

Yes, I did

SGaist

Hi,

Which compiler are you using exactly ?

Gravak

I'm using the MinGW g++ 5.3.0 compiler

SGaist

32 or 64 bit ?

Gravak

I'm using 64 bit

Gravak

I installed mingw-w64 and now I have the 6.3.0 version. It works now but there are a lot of other problems:

At the end of configure it checks the gold linker and then a window appears with the text: ld.gold.exe doesn't work anymore. My options are "Debug" and "Close program". When I use the second it continues with checking things. Then I type mingw32-make -j4 and then: it compiles but suddenly there are a lot of problems. The entry point "_ZdaPvy" was not found in the DLL ...\rcc.exe. It appears more than one time. After this there are ptoblems like "waiting for unfinished jobs" and then compiling was aborted

SGaist

Take a look at this thread.

ocroquette

@Gravak said in I failed to build Qt:

The entry point "_ZdaPvy" was not found in the DLL ...\rcc.exe

I had the same problem and found no solution online, so in case someone else has the same issue:

This error can occur if you have another, incompatible version of libstdc++-6.dll in your PATH. Make sure that the right one is found first, e.g. that it's location appears soon enough in the PATH environment variable.

SherifOmran

This issue occurs if you open the command line (visual studio) and try to compile Qt. Please try to open cmd from an old Qt ex 5.9.1 and try from it to compile, this should use the mingw32-make from 5.9.1 for example, otherwise you should correct the path.

rakasmo

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