In /usr/share/applications/gpsbabel.desktop the Exec should be gpsbabelfe, not gpsbabelfe-bin.

In addition to gpsbabelfe_.qm you should distribute gpsbabel_.qm. gpsbabelfe uses both translation files.

that should be gpsbabelfe_*.qm and gpsbabel_*.qm

Are you trying to say gui/coretool/gpsbabel_*.qm should be installed to /usr/share/qt5/translations/ as part of the gpsbabel-package?

This update has been unpushed.

I am saying that gui/coretool/gpsbabel_*.qm should be installed to /usr/share/qt5/translations/ as part of the gpsbabel-gui package.

gpsbabel-gui installs gpsbabelfe which uses both gpsbabelfe_.qm and gpsbabel_.qm translation files. The gpsbabel_*.qm files are translations of strings produced by the command line gpsbabel that gpsbabelfe may see and translate.

Alternatively,

If you

cd gui

qmake

make package

then on linux all the bits (except the desktop file) will be gathered for you under gui/GPSBabelFE

The package target is new to 1.6.0.

There are two additional problem with translations besides supplying the gpsbabelfe_.qm and gpsbabel_.qm files.

• you need a patch analogous to 0003-gpsbabel-1.4.3-gmapbase.patch. This is due to how Fedora packages gpsbabel.

diff --git a/gui/mainwindow.cc b/gui/mainwindow.cc
index ea995ad6..ee79ce1c 100644
--- a/gui/mainwindow.cc
+++ b/gui/mainwindow.cc
@@ -78,6 +78,9 @@ const int BabelData::deviceType_ = 1;

 #define FAKE_LANGUAGE_MENU 0

+#ifndef QTTRANSLATIONDIR
+#define QTTRANSLATIONDIR "/usr/share/qt5/translations"
+#endif
 //------------------------------------------------------------------------
 QString MainWindow::findBabelVersion()
 {
@@ -222,8 +225,7 @@ MainWindow::MainWindow(QWidget* parent): QMainWindow(parent)

   ui_.outputWindow->setReadOnly(true);

-  langPath_ = QApplication::applicationDirPath();
-  langPath_.append("/translations/");
+  langPath_ = QTTRANSLATIONDIR;

   // Start up in the current system language.
   loadLanguage(QLocale::system().name());

• There is a bug upstream that causes the load of meta catalogs (https://doc.qt.io/qt-5/linguist-programmers.html#deploying-translations) as distributed by Qt to fail. This will be fixed upstream, but with 1.6.0 you will need another patch.

diff --git a/gui/mainwindow.cc b/gui/mainwindow.cc
index ea995ad6..7f53c4f1 100644
--- a/gui/mainwindow.cc
+++ b/gui/mainwindow.cc
@@ -314,10 +314,8 @@ void MainWindow::switchTranslator(QTranslator& translator, const QString& filena
   // remove the old translator
   qApp->removeTranslator(&translator);

-  QString full_filename(langPath_ + "/" + filename);
-
   // load the new translator
-  if (translator.load(full_filename)) {
+  if (translator.load(filename, langPath_)) {
     qApp->installTranslator(&translator);
   }
 }

Thanks. I'll apply your patches to the next iteration of this package.