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  1. Qt
  2. QTBUG-86287

Static 5.15.0 compile results in "undefined reference to xcb_aux_create_gc"

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    • Linux/X11
    • 39b1dea2ec5cde9523df61c78dec5d4b195f66d2 (qt/qtbase/dev) adc42bebcac764ca8de78578e3a4ac39b621bd09 (qt/qtbase/5.15)

    Description

      Using Ubuntu 18.04 inside Docker, compiled Qt5 with -static -qpa xcb [...] 

      After that's done, I try to compile my program I get:

      /usr/local/lib/libxcb-image.a(xcb_image.o): In function `xcb_create_pixmap_from_bitmap_data':
xcb_image.c:(.text+0x1c69): undefined reference to `xcb_aux_create_gc'
collect2: error: ld returned 1 exit status
CMakeFiles/hello2.dir/build.make:310: recipe for target 'hello2' failed
make[2]: *** [hello2] Error 1
CMakeFiles/Makefile2:94: recipe for target 'CMakeFiles/hello2.dir/all' failed
make[1]: *** [CMakeFiles/hello2.dir/all] Error 2
Makefile:102: recipe for target 'all' failed

       

      I have:

      • /usr/local/lib/libxcd-image.a version 0.3.9
      • /usr/local/lib/libxcd-util.a version 0.3.9

       

      libxcb-image.a requires libxcb-util.a, as can be seen on the libxcb-image repo, the function xcb_aux_create_gc is defined in -util, see also the libxcb-util repo.

      However, in qtbase/src/gui/configure.json we see no such requirement.

      So I have added:

      "xcb_util": {
    "label": "XCB Util >= 0.3.9",
    "headers": "xcb/xcb_util.h",
    "sources": [
        { "type": "pkgConfig", "args": "xcb-util >= 0.3.9" },
        "-lxcb-util"
    ],
    "use": "xcb"
},
"xcb_image": {
    "label": "XCB Image >= 0.3.9",
    "headers": "xcb/xcb_image.h",
    "sources": [
        { "type": "pkgConfig", "args": "xcb-image >= 0.3.9" },
        "-lxcb-image"
    ],
    "use": "xcb_shm xcb_util xcb"
},

       

      And for xcb_syslibs:

      "use": "xcb_icccm xcb_util xcb_image xcb_keysyms xcb_randr xcb_render xcb_renderutil xcb_shape xcb_shm xcb_sync xcb_xfixes xcb_xinerama xcb_xkb xcb"

      So that the qtbase compilation also links against xcb_util before xcb_image. My Qt5 hello world program compiles fine now.

       

      I have attached both my ./configure options and a git patch for the 5.15.0 branch as I'm not sure how to contribute to Qt development.

      Here are some of the xcb libraries I installed statically:

      CFLAGS='-fPIC' CXXFLAGS='-fPIC' ./autogen.sh --disable-shared --enable-static && \
make -j4
make install

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          Bug - A problem which impairs or prevents the functions of the product. QTBUG-88688 Qt application fails to start on Debian 10 Buster because libqxcb.so requires missing libxcb-util.so.1

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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              sfer Robert Boon
              sfer Robert Boon
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                Updated:

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