Build Issue when depending on systemd

Hello,

I have C++/Qt application which does a lot of things, and among them, forwards journald logs to web service. I failed to build it correctly under buildroot-2015-02.

Config.in looks like this

config BR2_PACKAGE_DASHBOARD_CLIENT
bool "dashboard-client"
depends on BR2_PACKAGE_HAS_LIBEGL
depends on BR2_PACKAGE_QT5
depends on BR2_PACKAGE_QT5_GL_AVAILABLE
depends on BR2_PACKAGE_QT5_JSCORE_AVAILABLE
depends on BR2_PACKAGE_QT5BASE_EGLFS
depends on BR2_PACKAGE_QT5BASE_NETWORK
depends on BR2_PACKAGE_QT5BASE_PNG
depends on BR2_PACKAGE_QT5BASE_WIDGETS
depends on BR2_PACKAGE_QT5GRAPHICALEFFECTS
depends on BR2_PACKAGE_SYSTEMD
help
DASHBOARD client

and I get the following compilation error on clean build

fatal error: systemd/sd-journal.h: No such file or directory

  #include <systemd/sd-journal.h>
                                 ^

compilation terminated.

This is because systemd is build after my package, I see this from log. If I unselect my package, build system, reselect my package and build again everything build just fine. Also,

make dashboard-client-graph-depends

outputs

Getting dependencies for ['dashboard-client']
Getting dependencies for ['toolchain', 'qt5base', 'qt5multimedia', 'qt5graphicaleffects', 'qt5imageformats', 'qt5declarative', 'qt5webkit'] Getting dependencies for ['host-flex', 'host-bison', 'toolchain-buildroot', 'libpng', 'host-ruby', 'jpeg', 'host-pkgconf', 'libegl', 'zlib', 'openssl', 'qt5xmlpatterns', 'sqlite', 'host-gperf', 'fontconfig', 'pcre', 'icu', 'libgles']
Getting dependencies for ['host-gcc-final', 'jpeg-turbo', 'host-m4', 'expat', 'readline', 'rpi-userland', 'ncurses', 'host-icu', 'freetype'] Getting dependencies for ['host-libtool', 'host-automake', 'host-gmp', 'host-autoconf', 'host-mpfr', 'host-binutils', 'host-ncurses', 'glibc', 'host-mpc', 'host-cmake']
Getting dependencies for ['host-gawk', 'linux-headers', 'host-gcc-initial']

And there is no mention of systemd in generated PDF too.

So either there I declare dependency on systemd incorrectly (then what is the correct way?), or there is some dependency resolution problem.

How can I debug this issue?

With best regards,
Roman
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Did you add systemd to DASHBOARD_CLIENT_DEPENDENCIES? The select/depends on in Kconfig only ensures that the packages get built, but it doesn't affect the build order. If you need systemd to be built before your application you have to add it to the _DEPENDENCIES make variable.

See the manual for further information:

http://buildroot.net/downloads/manual/manual.html#generic-package-reference

Bye, Peter Korsgaard