Bug#928508: libqt5gui5: fontconfig not enabled in plugins/platforms/libqoffscreen.so
Package: libqt5gui5
Version: 5.7.1+dfsg-3+deb9u1
Severity: normal
Dear Maintainers,
please build plugins/platforms/libqoffscreen.so to be linked to fontconfig.
What I experience:
Running an application with QT_QPA_PLATFORM=offscreen fails to find any fonts.
What I expect:
An application running with QT_QPA_PLATFORM=offscreen find the fonts
installed on the system (like any X11 server does).
Background:
I'm running an application for converting HTML pages into PDF (much
like wxhtmltopdf). To save resources I want to not run a xfvb server
for rendering, but use QT_QPA_PLATFORM=offscreen. Unfortunately the
offscreen platform plugin does not find any fonts.
Other distributions link libqoffscreen.so to fontconfig, e.g. Fedora, see
https://fedora.pkgs.org/29/fedora-updates-x86_64/qt5-qtbase-gui-5.11.3-1.fc29.x86_64.$
Qt supports an env-var QT_QPA_FONTDIR, but this has to be a directory,
not a list of directories. Thus to make system-fonts available when
using QT_QPA_PLATFORM=offscreen. one would need to link all fonts into
one directory. Also thus would not take advantage of any caching
otherwise done by fontconfig and the application would need to read
all file in this directory to find the correct. font Thus using
QT_QPA_FONTDIR is not a serious option.
-- System Information:
Debian Release: 9.8
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-8-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libqt5gui5 depends on:
ii fontconfig 2.11.0-6.7+b1
ii libc6 2.24-11+deb9u4
ii libdrm2 2.4.74-1
ii libegl1-mesa [libegl1-x11] 13.0.6-1+b2
ii libfontconfig1 2.11.0-6.7+b1
ii libfreetype6 2.6.3-3.2
ii libgbm1 13.0.6-1+b2
ii libgcc1 1:6.3.0-18+deb9u1
ii libgl1-mesa-glx [libgl1] 13.0.6-1+b2
ii libglib2.0-0 2.50.3-2
ii libharfbuzz0b 1.4.2-1
ii libice6 2:1.0.9-2
ii libinput10 1.6.3-1
ii libjpeg62-turbo 1:1.5.1-2
ii libmtdev1 1.1.5-1+b1
ii libpng16-16 1.6.28-1
ii libqt5core5a [qtbase-abi-5-7-1] 5.7.1+dfsg-3+deb9u1
ii libqt5dbus5 5.7.1+dfsg-3+deb9u1
ii libqt5network5 5.7.1+dfsg-3+deb9u1
ii libsm6 2:1.2.2-1+b3
ii libstdc++6 6.3.0-18+deb9u1
ii libudev1 232-25+deb9u8
ii libx11-6 2:1.6.4-3+deb9u1
ii libx11-xcb1 2:1.6.4-3+deb9u1
ii libxcb-glx0 1.12-1
ii libxcb-icccm4 0.4.1-1
ii libxcb-image0 0.4.0-1+b2
ii libxcb-keysyms1 0.4.0-1+b2
ii libxcb-randr0 1.12-1
ii libxcb-render-util0 0.3.9-1
ii libxcb-render0 1.12-1
ii libxcb-shape0 1.12-1
ii libxcb-shm0 1.12-1
ii libxcb-sync1 1.12-1
ii libxcb-xfixes0 1.12-1
ii libxcb-xinerama0 1.12-1
ii libxcb-xkb1 1.12-1
ii libxcb1 1.12-1
ii libxi6 2:1.7.9-1
ii libxkbcommon-x11-0 0.7.1-2~deb9u1
ii libxkbcommon0 0.7.1-2~deb9u1
ii zlib1g 1:1.2.8.dfsg-5
Versions of packages libqt5gui5 recommends:
pn libqt5svg5 <none>
pn mesa-utils <none>
pn qt5-gtk-platformtheme <none>
Versions of packages libqt5gui5 suggests:
pn qt5-image-formats-plugins <none>
pn qtwayland5 <none>
-- no debconf information
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