can't translate my program via debian package but with autotools can - linux

Question

i use autotools as build system also i use gettext in my code for Translations.
I have few .po files (de.po, es.po and th.po ) and with autotools no problem to get them working. After:
./configure,
make
sudo make install
the program and the Translations .mo files get installed.
To testing that i open a terminal and change the locale e.g :
$ export LANG=de_DE.UTF-8
$ ./myprogram
and the translations works!.
I do with the same source code a debian deb package.
During the deb installation in a .posinst script i deploy the translations mo files to the locale destination (docklight is the program name):
#!/bin/bash
set -e
# check for locale dir (LIVE SYSTEMS don't have it)
if [ -d "/usr/local/share/locale" ]; then
podir="/usr/lib/docklight/docklight.data/po"
if [ -d ${podir} ]; then
cd ${podir}
PO_LINGUAS=$( if test -r LINGUAS; then grep -v "^\#" LINGUAS; fi)
linguas=$PO_LINGUAS
for lang in $linguas; do
dir=/usr/local/share/locale/$lang/LC_MESSAGES;
# check for locale dir (LIVE SYSTEMS don't have it)
if [ ! -d $dir ]; then
continue;
fi
# check for po file
if [ ! -f "$lang.po" ]; then
continue;
fi
file=`echo $lang | sed 's,.*/,,'`.gmo \
&& rm -f $file && /usr/local/bin/msgfmt -o $file "$lang.po"
/bin/bash install-sh -d $dir; \
if test -r $lang.gmo; then \
/usr/bin/install -c -m 644 $lang.gmo $dir/docklight.mo; \
echo "installing $lang.gmo as $dir/docklight.mo"; \
else \
/usr/bin/install -c -m 644 ./$lang.gmo $dir/docklight.mo; \
echo "installing ./$lang.gmo as" \
"$dir/docklight.mo"; \
fi
done
fi
fi
the generated Translations .mo files are correct and get installed on the locale folder for the language:
dir=/usr/local/share/locale/$lang/LC_MESSAGES;
exact the same like the build process with autotools.
After testing the languages:
$ export LANG=de_DE.UTF-8
$ ./myprogram
my program does not have any translation.
I don't know where the problem is. The deb installation works correct!
is something more that i need to care for the creation of a debian deb package?
As far as I understood, when you get myprogramm.mo files in place you should get the program translated.
Any ideas about that?
Thanks in advance for any help.

Answer 1

if find the solution:
I just need to set the PROGRAMNAME_LOCALEDIR path where the mo file are.
The gettext initialization can find the mo files and then everything gets translate. Works!
bindtextdomain(GETTEXT_PACKAGE, PROGRAMNAME_LOCALEDIR);
%s\n",domain,GETTEXT_PACKAGE,PROGRAMNAME_LOCALEDIR);
bind_textdomain_codeset - set encoding of message trans‐lations
btdcodeset = bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
Thank you all.