Building with stylesheet support on GNU/Linux

elazul

Hi there,

I have done many qt6.x builds by now, but for an specific software, I need to build it with a feature called stylesheets, which seems to be effects support for widgets.

I m also trying to do a minimal build, only including what's needed, so here's how I am configuring it before building:

../configure -release -prefix /usr/local -nomake tests -no-ssl -no-accessibility -no-dbus -no-feature-printsupport \
-no-feature-testlib -no-feature-xml -no-feature-sql -no-feature-harfbuzz \
-no-feature-texthtmlparser -no-feature-textmarkdownreader -no-feature-textmarkdownwriter -no-feature-textodfwriter -no-feature-cssparser

As you can see, widgets are not disabled. But during build I get:

/home/manuel/src/qt6/qttools/src/linguist/linguist/finddialog.cpp:45:14: error: ‘class QLineEdit’ has no member named ‘setStyleSheet’; did you mean ‘setStyle’?
   45 |         led->setStyleSheet(QStringLiteral("color: auto;"));
      |              ^~~~~~~~~~~~~
      |              setStyle

So, any idea on what am I missing in order to get this stylesheet support on my QT6 build, please?

Thanks!

Christian Ehrlicher

@elazul Look into the QWidget header and see what feature disables the setStyleSheet() function. Enable this function.

JonB

@elazul
As @Christian-Ehrlicher syas. But at a guess wouldn't -no-feature-cssparser likely/maybe disable setStyleSheet() CSS parsing?

elazul

@JonB Yes! Enabling cssparser made the trick and the program builds! Thanks a lot!

However, now I am getting this on the program I am trying to run:

qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: linuxfb, minimalegl, minimal, offscreen, eglfs, vnc, vkkhrdisplay.

Aborted (core dumped)

I am configuring like this:

../configure -release -prefix /usr/local -nomake tests -no-ssl -no-accessibility -no-dbus -no-feature-testlib \
-no-feature-sql -no-feature-harfbuzz -no-feature-textmarkdownreader -no-feature-textmarkdownwriter -no-feature-textodfwriter

I don't see any options that should disable XCB. Almost there... any ideas, please? That seems to mean there's no support for XCB on my QT6 build, right?

I see this during QT6 configuration resume:

Features used by QPA backends:
  evdev .................................. yes
  libinput ............................... no
  HiRes wheel support in libinput ........ no
  INTEGRITY HID .......................... no
  mtdev .................................. no
  tslib .................................. no
  xkbcommon .............................. yes
  X11 specific:
    XLib ................................. yes
    XCB Xlib ............................. yes
    EGL on X11 ........................... yes
    xkbcommon-x11 ........................ no
    xcb-sm ............................... no

Which clearly seems to indicate that XCB support is disabled. But why?

jsulm

@elazul said in Building with stylesheet support on GNU/Linux:

Which clearly seems to indicate that XCB support is disabled. But why?

Actually it looks like XCB was enabled.
If you want to know why something was disabled then check the config.log file. Usually some needed libraries are missing.

Christian Ehrlicher

@elazul said in Building with stylesheet support on GNU/Linux:

xkbcommon-x11 ........................ no
xcb-sm ............................... no

I would install those libs.

jsulm

@Christian-Ehrlicher @elazul Including their -dev packages.