[Buildroot] [Bug 14461] New: Qt5webenegine does not build due to fontconfig/freetype dependency problem

[Buildroot] [Bug 14461] New: Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

            Bug ID: 14461
           Summary: Qt5webenegine does not build due to
                    fontconfig/freetype dependency problem
           Product: buildroot
           Version: 2021.08.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: wojciech.ziniewicz@gmail.com
                CC: buildroot@uclibc.org
  Target Milestone: ---

Hello,
I'm experiencing the same qt5 webengine build problem on x86 64 bit
architecture with following combinations of gcc and buildroot:
- gcc8, gcc9, gcc10
- 2021.08.2, 2021.08.3, 2021.11

It seems that qt5webengine requires freetype2.pc file which exists (parallel to
other .pc files). Both pkg config/fontconfig and freetype are normally
available.
The freetype/fontconfig pair is compiled prior to qt5webengine and it does not
really matter whether I explicitly add them to the config file or not because
they are included via FONTCONFIG dependency in qt5webengine.


-------------------------------- the error:
ERROR at //build/config/linux/pkg_config.gni:103:17: Script returned non-zero
exit code.
    pkgresult = exec_script(pkg_config_script, args, "value")
                ^----------
Current dir:
/common_cache/nerves/artifacts/rzjb_system_dev-portable-1.1.0/build/qt5webengine-5.15.2/src/core/release/
Command:
/common_cache/nerves/artifacts/rzjb_system_dev-portable-1.1.0/host/bin/python2
/common_cache/nerves/artifacts/rzjb_system_dev-portable-1.1.0/build/qt5webengine-5.15.2/src/3rdparty/chromium/build/config/linux/pkg-config.py
-p
/common_cache/nerves/artifacts/rzjb_system_dev-portable-1.1.0/build/qt5webengine-5.15.2/host-bin/host-pkg-config
freetype2
Returned 1.
stderr:
Package freetype2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `freetype2.pc'
to the PKG_CONFIG_PATH environment variable
Package 'freetype2', required by 'virtual:world', not found
Could not run pkg-config.
See //build/linux/BUILD.gn:24:3: whence it was called.
  pkg_config("freetype_from_pkgconfig") {
  ^--------------------------------------
See //build/config/freetype/BUILD.gn:10:24: which caused the file to be
included.
    public_configs = [ "//build/linux:freetype_from_pkgconfig" ]
                       ^--------------------------------------
Project ERROR: GN run error!
make[4]: *** [Makefile:82: sub-gn_run-pro-make_first] Error 3
make[3]: *** [Makefile:79: sub-core-make_first] Error 2
make[2]: *** [Makefile:49: sub-src-make_first] Error 2
make[1]: *** [package/pkg-generic.mk:270:
/common_cache/nerves/artifacts/rzjb_system_dev-portable-1.1.0/build/qt5webengine-5.15.2/.stamp_built]
Error 2
make: *** [Makefile:23: _all] Error 2
--------------

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

--- Comment #1 from Peter Seiderer <ps.report@gmx.net> ---
Known problem, see [1], [2], and [3] for workaround/hack for solving it (and
[4] for more discussion of the problem)...

[1] https://bugs.busybox.net/show_bug.cgi?id=12131

[2] https://bugs.busybox.net/show_bug.cgi?id=11776

[3] http://lists.busybox.net/pipermail/buildroot/2020-December/601542.html

[4] http://lists.busybox.net/pipermail/buildroot/2021-January/301496.html

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

--- Comment #2 from Wojciech Ziniewicz <wojciech.ziniewicz@gmail.com> ---
Hello Peter - thank you for the response. I think it still leads me to nowwhere
but your memory of the issues is impressive.

[1] describes a problem that looks similar but it refers to problem with
stdlib.h while I'm having a problem with pkg-config / freetype
[2] the problem from this one was already patched and I confirmed I'm using a
patched version with QMAKE_ISYSTEM set to blank string
[3] this problem is _exactly_ what I'm seeing but still - the fix is in the
main branch and I also explicitly added the `BR2_PACKAGE_QT5BASE_FONTCONFIG` in
addition to the fact that qt5webengine requires is as a dependency itself now
[4] this is exeactly what I've done (actually my change is unnecessary as these
dependencies are automatically sucked in after the changes)

So basically even after I explicitly add the deps for fontconfig, I still get
the error.

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

--- Comment #3 from Peter Seiderer <ps.report@gmx.net> ---
(In reply to Wojciech Ziniewicz from comment #2)

I am pretty sure patch [3] is not in mainline ;-),
the trick is not the enabling of the target fontconfig/libjepeg but to
force host-fontconfig/host-libjpeg to be available to fullfill the
qt5webengine host-pkg-search for all/some libs enabled only for the target...

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

--- Comment #4 from Peter Seiderer <ps.report@gmx.net> ---
(In reply to Peter Seiderer from comment #3)

And finally the corresponding patchwork link [5]...

[5]
https://patchwork.ozlabs.org/project/buildroot/patch/20201221203952.22168-3-ps.report@gmx.net/

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

--- Comment #5 from Wojciech Ziniewicz <wojciech.ziniewicz@gmail.com> ---
Wonderful - Peter - let me try to use that in my build system and get back with
comments.

What are the chances these patches are included in the mainline?

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[Buildroot] [Bug 14461] Qt5webenegine does not build due to fontconfig/freetype dependency problem

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=14461

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED
                 CC|                            |yann.morin.1998@free.fr

--- Comment #6 from Yann E. MORIN <yann.morin.1998@free.fr> ---
Thank you for your report.

The issue tracker for the Buildroot project has been moved to
the Gitlab.com issue tracker:
    https://gitlab.com/buildroot.org/buildroot/-/issues

We are taking this opportunity to close old issues in this old
tracker. If you believe your issue is still relevant, please
open one in the new issue tracker.

Thank you!

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