Re: [dbus-cplusplus-devel] environment variable $DBUSXX_VERBOSE not available

[Andreas V. <li...@br...>]

Am Wed, 7 Sep 2016 09:43:23 -0400 schrieb John Simpson:

Hello John,

I don't like the debugging code in Dbus-C++. I took it over from the
former maintainer. I have the long time plan to replace it with
log4cxx when I've time -> what will never happen. :-P

If you raise your arm to provide a patch to replace complete logging
system with log4cxx than welcome :-)

https://logging.apache.org/log4cxx/latest_stable/

regards
Andreas

> I have built libdbus-c++ with option --enable-debug
> 
> The file debug.cpp contains the following line:
> 
>      static int debug_env = getenv("DBUSXX_VERBOSE") ? 1 : 0;
> 
> However, adding some print statements to the code, I find that
> getenv() is always returning null.
> 
> For a sanity check, I added this line:
> 
>      system("echo DBUSXX_VERBOSE: $DBUSXX_VERBOSE > /dev/pts/1");
> 
> This prints out "DBUSXX_VERBOSE:" without a value, in spite of the
> fact that I am launching with the variable set on the command line,
> like this:
> 
> # DBUSXX_VERBOSE=1 /bin/dbus-daemon --system --nofork
> 
> So for some reason, it seems that the code is in a different
> environment than that from which it was launched?
> 
> I can get the debug output by commenting out the if structure, but I
> would like to know why the environment isn't getting passed through,
> and what is an appropriate procedure for enabling the debug messages.
> 
> Package was built with dbus-c++_0.9.0.orig.tar.gz and
> dbus-c++_0.9.0-6ubuntu1.debian.tar.gz
> 
> System:
> # uname -a
> Linux SW0012 4.4.15-cec-release-rt23 #0 SMP PREEMPT RT Fri Aug 26
> 16:08:24 EDT 2016 i686 i686 i686 GNU/Linux
> 
> # cat /etc/debian_version
> jessie/sid
> 
> # cat /etc/lsb-release
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=14.04
> DISTRIB_CODENAME=trusty
> DISTRIB_DESCRIPTION="Ubuntu 14.04.4 LTS"
> 
> # sed 8q config.log
> This file contains any messages produced by compilers while
> running configure, to aid debugging if configure makes a mistake.
> 
> It was created by libdbus-c++ configure 0.9.0, which was
> generated by GNU Autoconf 2.69.  Invocation command line was
> 
>   $ ./configure --build=i686-linux-gnu --prefix=/usr
> --includedir=${prefix}/include --mandir=${prefix}/share/man
> --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var
> --libdir=${prefix}/lib/i386-linux-gnu
> --libexecdir=${prefix}/lib/i386-linux-gnu --disable-maintainer-mode
> --disable-dependency-tracking --enable-glib --disable-ecore
> --enable-doxygen-docs --enable-debug
> 
> Please let me know if any further info would be helpful.
> 
> Thanks,
> 
> 
> John


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