Qt 4.5.3 linux error

curlingbunny

Hi all,
I installed the Qt 4.5.3 embedded linux version and tried to compile my previous code which compiled well with Qt 4.3.3. However, it gives me error messages about the qtconcurrentrunbase.h file. The errors are :

/opt/qt/src/qt-embedded-linux-opensource-src-4.5.3-output/include/QtCore/qtconcurrentrunbase.h:65: error: expected identifier before "void"
/opt/qt/src/qt-embedded-linux-opensource-src-4.5.3-output/include/QtCore/qtconcurrentrunbase.h:65: error: ISO C++ forbids declaration of parameter' with no type /opt/qt/src/qt-embedded-linux-opensource-src-4.5.3-output/include/QtCore/qtconcurrentrunbase.h:72: error: expected identifier before "void" /opt/qt/src/qt-embedded-linux-opensource-src-4.5.3-output/include/QtCore/qtconcurrentrunbase.h:72: error: ISO C++ forbids declaration of parameter' with no type

The qtconcurrentrunbase.h 65 and 72 are:
@template <typename T>
struct SelectSpecialization
{
template <class Normal, class Void> //65
struct Type { typedef Normal type; };
};

template <>
struct SelectSpecialization<void>
{
template <class Normal, class Void> //72
struct Type { typedef Void type; };
};@

Anyone knows what's going on?

SGaist

Hi,

What version of cross-compiler are you using ?

And why such an old version of Qt ?

sierdzio

Seems that your compiler is treating "Void" the same as "void", which is wrong.

curlingbunny

Thanks both for replying!
Yeah that makes sense. I'm using the compiler arm_v5t_le-g++/gcc . Is there any workaround?

@SGaist, the reason that I'm using 4.5.3 is that it's free. I have to use the embedded linux version. Not sure whether the qt-everywhere version (4.8) would work. I'm just trying to be safe. I guess I could try that too.

sierdzio

All Qt versions are free (LGPL or GPL), including Qt5. Although helping Digia make Qt by buying a commercial license is a nice thing to do :)

curlingbunny

Thanks @sierdzio! I'm trying to build 4.8. The cross-compiling is a little bit tricky.

[quote author="sierdzio" date="1362577553"]All Qt versions are free (LGPL or GPL), including Qt5. Although helping Digia make Qt by buying a commercial license is a nice thing to do :)[/quote]

SGaist

What version of arm cross compiler (i.e arm-linux-gcc 4.6) ?

curlingbunny

Hey @SGaist,
I'm using gcc (SUSE Linux) 4.4.1, same as g++. I tried to install 4.8, it gave the same error. Seems they used the same template ever after qt 4.5.
Do you know any way to make it work? Thank you so so so much!

[quote author="SGaist" date="1362579119"]What version of arm cross compiler (i.e arm-linux-gcc 4.6) ? [/quote]

curlingbunny

No answers? Why doesn't gcc see the VOID? Can anyone help me?

[quote author="curlingbunny" date="1362598953"]Hey @SGaist,
I'm using gcc (SUSE Linux) 4.4.1, same as g++. I tried to install 4.8, it gave the same error. Seems they used the same template ever after qt 4.5.
Do you know any way to make it work? Thank you so so so much!

[quote author="SGaist" date="1362579119"]What version of arm cross compiler (i.e arm-linux-gcc 4.6) ? [/quote][/quote]