Building for Android

[waldemarKunkel]

Hi, I'm trying integrate your library in my Android project. So far I was using MHD and was also able to build Jensson. But ulfius won't build. It gives me this error: -- Could NOT find Systemd (missing: SYSTEMD_LIBRARY SYSTEMD_INCLUDE_DIR)

[babelouest]

This looks like an error in yder compilation where it needs systemd library by default.

You can try to build yder independently with disabling systemd dependency:

$ git clone https://github.com/babelouest/yder.git
$ cd yder/src
$ make Y_DISABLE_JOURNALD=1
$ sudo make install

Although I have never tried to compile Ulfius on android, I'm interested in the results.

[waldemarKunkel]

I have quick-and-dirty managed to compile all the libraries and it works for now. I will upload my changes somehow.

[babelouest]

Awesome, I'll wait for your feedback then.

[EauContraire]

I have the same problem under Debian Stretch, I downloaded Ulfius as a zip, then downloaded orcadia & yder into ulfius's lib directory and followed their installation instructions as per their README's. Orcadia installed OK, however yder did not.

I am happy to help if I can, I found alternative FindSystemd.cmake scripts but I am no cmake expert and couldn't see (quickly) how to integrate them.

paul@grunt:~/src/c/ulfius-master/lib/yder-master/build$ cmake \
> -DWITH_JANSSON=off \
> -DBUILD_STATIC=on \
> -DBUILD_TESTING=off \
> -DINSTALL_HEADER=on \
> -DCMAKE_BUILD_TYPE=Release ..
-- Could NOT find Systemd (missing:  SYSTEMD_LIBRARY SYSTEMD_INCLUDE_DIR)
CMake Error at /usr/share/cmake-3.7/Modules/FindPackageHandleStandardArgs.cmake:138 (message):
  Could NOT find Systemd (missing: SYSTEMD_LIBRARY SYSTEMD_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/share/cmake-3.7/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  cmake-modules/FindSystemd.cmake:47 (find_package_handle_standard_args)
  CMakeLists.txt:98 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/paul/src/c/ulfius-master/lib/yder-master/build/CMakeFiles/CMakeOutput.log".

A quick look at yder.c shows

#ifndef _WIN32
  #include <syslog.h>
  #ifndef Y_DISABLE_JOURNALD
    #include <systemd/sd-journal.h>
  #endif
#endif

but: find / -mount -name 'sd-journal.h' -print yields no file of that name.

I tried: make Y_DISABLE_JOURNALD=1 and.. FX: Ooops! my first try failed, I then tried again and it compiled.

I followed this by: sudo make static-install

and I have what I want.

Sorry for the noise, comment about cmake above still stands.

[babelouest]

@EauContraire , it seems that your problem was the absence of libsystemd: apt install libsystemd-dev Or as you figured out, building yder without journald: cmake -DWITH_JOURNALD=off ..

[babelouest]

@waldemarKunkel , were you able to move on with the android build?

[chipitsine]

Azure DevOps (former VSTS) can build for android. I'll have a look at it

[OblackatO]

Are there already any updates or guides in how to build in android? It would be lovely to use ulfius as a client in my android, since I am also thinking of using it in my RESTful server.