Configure pre-condition 'libs.journald' failed when enabling journald for qt5.12.10

Max Yang

Hi, I am getting an error when configuring qt to use journald for version 5.12.10. When I run the configure command

./Qt/5.12.10/Src/configure -journald

The error message I get,

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

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

WARNING: QDoc will not be compiled, probably because libclang could not be located. This means that you cannot build the Qt documentation.

Either ensure that llvm-config is in your PATH environment variable, or set LLVM_INSTALL_DIR to the location of your llvm installation.
On Linux systems, you may be able to install libclang by installing the libclang-dev or libclang-devel package, depending on your distribution.
On macOS, you can use Homebrew's llvm package.
On Windows, you must set LLVM_INSTALL_DIR to the installation path.

WARNING: flex is required to build QtWebEngine.

ERROR: Feature 'journald' was enabled, but the pre-condition 'libs.journald' failed.

The config.log file seems to indicate that there are a lot of packages missing but I can't seem to pinpoint the exact source of the problem. Has anyone got any ideas?

The config log file:
https://drive.google.com/file/d/11NL7fGkFTuGaAl0LZSHDlLHl9aQq2hDG/view?usp=sharing

SGaist

Hi and welcome to devnet,

Based on the log either libsystemd or libsystemd-journal would seem to be checked.

Therefore you should check your distribution's package manager to see which package is related to these libraries.

Max Yang

@SGaist Thanks for your answer.

I am using ubuntu. I have tried sudo apt-get install libsystemd-dev and then retrying the configure script, this did not seem to have solved the issue. The config log is still saying

loaded result for library config.qtbase_corelib.libraries.journald
Trying source 0 (type pkgConfig) of library journald ...
+ /usr/bin/pkg-config --exists --silence-errors libsystemd
pkg-config did not find package.
  => source produced no result.
Trying source 1 (type pkgConfig) of library journald ...
+ /usr/bin/pkg-config --exists --silence-errors libsystemd-journal
pkg-config did not find package.
  => source produced no result.
test config.qtbase_corelib.libraries.journald FAILED

But I clearly have this package, not sure why it can't find it

Package: libsystemd-dev
Status: install ok installed
Priority: optional
Section: libdevel
Installed-Size: 620
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Architecture: amd64
Multi-Arch: same
Source: systemd
Version: 229-4ubuntu21.31
Replaces: libsystemd-daemon-dev (<< 209), libsystemd-id128-dev (<< 209), libsystemd-journal-dev (<< 209), libsystemd-login-dev (<< 209), systemd (<< 204-8)
Depends: libsystemd0 (= 229-4ubuntu21.31)
Breaks: libsystemd-daemon-dev (<< 209), libsystemd-id128-dev (<< 209), libsystemd-journal-dev (<< 209), libsystemd-login-dev (<< 209), systemd (<< 204-8)
Description: systemd utility library - development files
 The libsystemd0 library provides interfaces to various systemd components.

SGaist

Did you check for libsystemd-journal ?

Max Yang

So I did find the problem in the end, installing libsystemd-dev was enough. I just needed to run ./configure recheck to remove cached configuration setups. The configure script seemed to have worked after that. Thanks a lot!