BLFS 8.1: QT5 configure: dbus not recognized?

jr_bob_dobbs · 02-18-2018, 08:12 AM

So I'm in the middle of getting QT5 built. Running a 8.1 system, 64-bit CPU. Aside from working towards a DESTDIR install (though it turns out that for QT-5, one uses INSTALL_ROOT instead, but that's a detail not pertinent to this question) and aside from not installing Cups, Wayland nor PulseAudio, I am following the book.

I have dbus yet the output from the configure run seems to indicate that it is seeing dbus and then failing to see dbus. Could this be because I am compiling as non-root?

Log of configure stage:

Code:

+ cd qtbase
+ /home/bob/compile/qt5/build_it/qt-everywhere-opensource-src-5.9.1/qtbase/configure -top-level -prefix /opt/qt5 -sysconfdir /etc/xdg -confirm-license -opensource -dbus-linked -openssl-linked -system-harfbuzz -system-sqlite -nomake examples -no-rpath -skip qtwebengine
Creating qmake...
Done.
Info: creating super cache file /home/bob/compile/qt5/build_it/qt-everywhere-opensource-src-5.9.1/.qmake.super
Info: creating stash file /home/bob/compile/qt5/build_it/qt-everywhere-opensource-src-5.9.1/.qmake.stash

This is the Qt Open Source Edition.

You have already accepted the terms of the Open Source license.

Running configuration tests...
Checking for gold linker... yes
Checking for machine tuple... yes
Checking for valid makespec... yes
Checking for alloca() in alloca.h... yes
Checking for target architecture... x86_64
Checking for SSE2 instructions... yes
Checking for SSE3 instructions... yes
Checking for SSSE3 instructions... yes
Checking for SSE4.1 instructions... yes
Checking for SSE4.2 instructions... yes
Checking for AVX instructions... yes
Checking for AVX2 instructions... yes
Checking for AVX512 F instructions... yes
Checking for AVX512 BW instructions... yes
Checking for AVX512 CD instructions... yes
Checking for AVX512 DQ instructions... yes
Checking for AVX512 ER instructions... yes
Checking for AVX512 IFMA instructions... yes
Checking for AVX512 PF instructions... yes
Checking for AVX512 VBMI instructions... yes
Checking for AVX512 VL instructions... yes
Checking for C++14 support... yes
Checking for C++1z support... yes
Checking for pkg-config... yes
Checking for D-Bus >= 1.2... yes
Checking for new dtags support... yes
Checking for F16C instructions... yes
Checking for D-Bus >= 1.2 (host)... yes
Checking for udev... yes
Checking for mremap()... yes
Checking for POSIX fallocate()... yes
Checking for precompiled header support... yes
Checking for symbol visibility support... yes
Checking for -Bsymbolic-functions support... yes
Checking for STL compatibility... yes
Checking for zlib... yes
Checking for clock_gettime()... yes
Checking for POSIX monotonic clock... yes
Checking for dlopen()... yes
Checking for eventfd... yes
Checking for GLib... yes
Checking for POSIX iconv... yes
Checking for ICU... yes
Checking for inotify... yes
Checking for SysV IPC... yes
Checking for 64 bit atomics... yes
Checking for ppoll()... yes
Checking for slog2... no
Checking for DoubleConversion... no
Checking for PCRE2... no
Checking for O_CLOEXEC... yes
Checking for working std::atomic for function pointers... yes
Checking for getaddrinfo()... yes
Checking for getifaddrs()... yes
Checking for IPv6 ifname... yes
Checking for OpenSSL... yes
Checking for XCB >= 1.5 (core)... yes
Checking for Desktop OpenGL... yes
Checking for EGL... yes
Checking for XCB Xlib... yes
Checking for EGL on X11... yes
Checking for Broadcom EGL (Raspberry Pi)... no
Checking for EGLDevice... yes
Checking for KMS... yes
Checking for GBM... yes
Checking for Mali EGL... no
Checking for Mali 2 EGL... no
Checking for i.Mx6 EGL... no
Checking for evdev... yes
Checking for FreeType... yes
Checking for Fontconfig... yes
Checking for libinput... yes
Checking for axis API in libinput... yes
Checking for LinuxFB... yes
Checking for mtdev... yes
Checking for OpenVG... no
Checking for default QPA platform... xcb
Checking for HarfBuzz... yes
Checking for libjpeg... yes
Checking for libpng... yes
Checking for XCB (extensions)... yes
Checking for tslib... no
Checking for X11 prefix... /usr
Checking for XCB GLX... yes
Checking for XCB XRender... yes
Checking for X11 session management... yes
Checking for XLib... yes
Checking for Xinput2... yes
Checking for XCB XKB >= 1.10... yes
Checking for xkbcommon-x11 >= 0.4.1... yes
Checking for xkbcommon... yes
Checking for GTK+ >= 3.6... no
Checking for CUPS... no
Checking for DB2 (IBM)... no
Checking for InterBase... no
Checking for MySQL... no
Checking for OCI (Oracle)... no
Checking for ODBC... no
Checking for PostgreSQL... no
Checking for SQLite (version 2)... no
Checking for TDS (Sybase)... no
Checking for SQLite (version 3)... yes
Checking for Socket CAN... yes
Checking for Socket CAN FD... yes
Checking for Direct3D 12... no
Checking for SDL2... no
Checking for Assimp... no
Checking for Autodesk FBX... no
Checking for Wayland client library... no
Checking for Wayland EGL library... no
Checking for wayland-server... no
Checking for BlueZ... no
Checking for sensorfw... no
Checking for ALSA... yes
Checking for GStreamer 1.0... yes
Checking for GStreamer App 1.0... yes
Checking for GStreamer encoding-profile.h... yes
Checking for GStreamer Photography 1.0... no
Checking for Video for Linux... yes
Checking for OpenAL... no
Checking for PulseAudio >= 0.9.10... no
Checking for libresourceqt5... no
Checking for Gypsy... no
Checking for WinRT Geolocation API... no
Done running configuration tests.

Configure summary:

Build type: linux-g++ (x86_64, CPU features: mmx sse sse2)
Configuration: use_gold_linker sse2 sse3 ssse3 sse4_1 sse4_2 avx avx2 avx512f avx512bw avx512cd avx512dq avx512er avx512ifma avx512pf avx512vbmi avx512vl compile_examples enable_new_dtags f16c largefile precompile_header shared release c++11 c++14 c++1z concurrent dbus mremap reduce_exports reduce_relocations stl
Build options:
Mode ................................... release
Optimize release build for size ........ no
Building shared libraries .............. yes
Using C++ standard ..................... C++1z
Using gold linker ...................... yes
Using new DTAGS ........................ yes
Using precompiled headers .............. yes
Using LTCG ............................. no
Target compiler supports:
SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
AVX .................................. AVX AVX2 F16C
AVX512 ............................... F ER CD PF DQ BW VL IFMA VBMI
Build parts ............................ libs tools
Qt modules and options:
Qt Concurrent .......................... yes
Qt D-Bus ............................... yes
Qt D-Bus directly linked to libdbus .... yes
Qt Gui ................................. yes
Qt Network ............................. yes
Qt Sql ................................. yes
Qt Testlib ............................. yes
Qt Widgets ............................. yes
Qt Xml ................................. yes
Support enabled for:
Using pkg-config ....................... yes
QML debugging .......................... yes
udev ................................... yes
Using system zlib ...................... yes
Qt Core:
DoubleConversion ....................... yes
Using system DoubleConversion ........ no
GLib ................................... yes
iconv .................................. no
ICU .................................... yes
Logging backends:
journald ............................. no
syslog ............................... no
slog2 ................................ no
Using system PCRE2 ..................... no
Qt Network:
getaddrinfo() .......................... yes
getifaddrs() ........................... yes
IPv6 ifname ............................ yes
libproxy ............................... no
OpenSSL ................................ yes
Qt directly linked to OpenSSL ........ yes
SCTP ................................... no
Use system proxies ..................... yes
Qt Gui:
Accessibility .......................... yes
FreeType ............................... yes
Using system FreeType ................ yes
HarfBuzz ............................... yes
Using system HarfBuzz ................ yes
Fontconfig ............................. yes
Image formats:
GIF .................................. yes
ICO .................................. yes
JPEG ................................. yes
Using system libjpeg ............... yes
PNG .................................. yes
Using system libpng ................ yes
EGL .................................... yes
OpenVG ................................. no
OpenGL:
Desktop OpenGL ....................... yes
OpenGL ES 2.0 ........................ no
OpenGL ES 3.0 ........................ no
OpenGL ES 3.1 ........................ no
Session Management ..................... yes
Features used by QPA backends:
evdev .................................. yes
libinput ............................... yes
INTEGRITY HID .......................... no
mtdev .................................. yes
tslib .................................. no
xkbcommon-evdev ........................ yes
QPA backends:
DirectFB ............................... no
EGLFS .................................. yes
EGLFS details:
EGLFS i.Mx6 .......................... no
EGLFS i.Mx6 Wayland .................. no
EGLFS EGLDevice ...................... yes
EGLFS GBM ............................ yes
EGLFS Mali ........................... no
EGLFS Raspberry Pi ................... no
EGL on X11 ........................... yes
LinuxFB ................................ yes
VNC .................................... yes
Mir client ............................. no
X11:
Using system-provided XCB libraries .. yes
EGL on X11 ........................... yes
Xinput2 .............................. yes
XCB XKB .............................. yes
XLib ................................. yes
XCB render ........................... yes
XCB GLX .............................. yes
XCB Xlib ............................. yes
Using system-provided xkbcommon ...... yes
Qt Widgets:
GTK+ ................................... no
Styles ................................. Fusion Windows
Qt PrintSupport:
CUPS ................................... no
Qt Sql:
DB2 (IBM) .............................. no
InterBase .............................. no
MySql .................................. no
OCI (Oracle) ........................... no
ODBC ................................... no
PostgreSQL ............................. no
SQLite2 ................................ no
SQLite ................................. yes
Using system provided SQLite ......... yes
TDS (Sybase) ........................... no
Qt SerialBus:
Socket CAN ............................. yes
Socket CAN FD .......................... yes
QtXmlPatterns:
XML schema support ..................... yes
Qt QML:
QML interpreter ........................ yes
QML network support .................... yes
Qt Quick:
Direct3D 12 ............................ no
AnimatedImage item ..................... yes
Canvas item ............................ yes
Support for Qt Quick Designer .......... yes
Flipable item .......................... yes
GridView item .......................... yes
ListView item .......................... yes
Path support ........................... yes
PathView item .......................... yes
Positioner items ....................... yes
ShaderEffect item ...................... yes
Sprite item ............................ yes
Qt Gamepad:
SDL2 ................................... no
Qt 3D:
Assimp ................................. yes
System Assimp .......................... no
Output Qt3D Job traces ................. no
Output Qt3D GL traces .................. no
Qt 3D GeometryLoaders:
Autodesk FBX ........................... no
Qt Wayland Client ........................ no
Qt Wayland Compositor .................... no
Qt Bluetooth:
BlueZ .................................. no
BlueZ Low Energy ....................... no
Linux Crypto API ....................... no
Qt Sensors:
sensorfw ............................... no
Qt Multimedia:
ALSA ................................... yes
GStreamer 1.0 .......................... yes
GStreamer 0.10 ......................... no
Video for Linux ........................ yes
OpenAL ................................. no
PulseAudio ............................. no
Resource Policy (libresourceqt5) ....... no
Windows Audio Services ................. no
DirectShow ............................. no
Windows Media Foundation ............... no
Qt Quick Controls 2:
Styles ................................. Default Material Universal
Qt Quick Templates 2:
Hover support .......................... yes
Multi-touch support .................... yes
Qt Location:
Gypsy GPS Daemon ....................... no
WinRT Geolocation API .................. no

Note: Also available for Linux: linux-clang linux-icc

Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

Note: Disabling Linux Accessibility Bridge: D-Bus is missing.

Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'.

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/opt/qt5'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

from the above: these lines are what make me wonder:

Code:

  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... yes

Code:

Note: Disabling Linux Accessibility Bridge: D-Bus is missing.

Thank you very much.

business_kid · 02-21-2018, 02:42 AM

Compile as root if you're following the book.

jr_bob_dobbs · 02-21-2018, 05:14 PM

Quote:

Originally Posted by business_kid

Compile as root if you're following the book.

Thank you for your reply.

Could you please indicate to this unobservant soul where the book says to run configure for QT-5 as root? I'd like to know, to correct my activities from here on.

I've since done a fresh configure attempt as root. yes, as root ... and the output was exactly the same as the non-root attempts. So the configure output remains contradictory in that it indicates that dbus is seen and then that it is not.

stoat · 02-21-2018, 08:36 PM

I ran the configure command for Qt-5.9.1 found in the BLFS 8.1 book and got results very close to yours specifically including the D-Bus is missing note.

Quote:

Originally Posted by Qt-5.9.1 configure

...

Code:

Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... yes
  Qt Gui ................................. yes
  Qt Network ............................. yes
  Qt Sql ................................. yes
  Qt Testlib ............................. yes
  Qt Widgets ............................. yes
  Qt Xml ................................. yes

...

Code:

Note: Also available for Linux: linux-clang linux-icc

Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

Note: Disabling Linux Accessibility Bridge: D-Bus is missing.

Note: Dropped compiler flags '-pthread' when detecting library 'gtk3'.

Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'.

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/opt/qt5'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

But currently I am using Qt-5.10.0 from a recent SVN book. Running the configuration for that version in the same system did not have the D-Bus issue...

Quote:

Originally Posted by Qt-5.10.0 configure

...

Code:

Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... yes
  Qt Gui ................................. yes
  Qt Network ............................. yes
  Qt Sql ................................. yes
  Qt Testlib ............................. yes
  Qt Widgets ............................. yes
  Qt Xml ................................. yes

...

Code:

Note: Also available for Linux: linux-clang linux-icc

Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

Note: When linking against OpenSSL, you can override the default
library names through OPENSSL_LIBS.
For example:
    OPENSSL_LIBS='-L/opt/ssl/lib -lssl -lcrypto' ./configure -openssl-linked

Note: Dropped compiler flags '-pthread' when detecting library 'gtk3'.

Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'.

Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'.

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/opt/qt5'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

So, one idea is to try a newer Qt version. Otherwise, consider posting at the blfs-support mailing list. They may know the cause and offer some workaround.

Krejzi · 03-07-2018, 02:28 PM

It's a bug in Qt 5.9.1. See https://github.com/qt/qtbase/commit/386af91c.patch

You also need at-spi2-core to get accessibility to build. The message is just misleading, it has nothing to do with dbus.

jr_bob_dobbs · 03-11-2018, 03:47 PM

Thank you for the replies.

Decided to install QT anyway. So far, no problems. The magnifier that comes with QT runs fine and I've compiled a program that requires QT.