QMake: Compile translations at build time

qbittorrent.pro

@@ -17,10 +17,6 @@ tarball.commands += rm -fR $${PROJECT_NAME}-$${PROJECT_VERSION}
 
 QMAKE_EXTRA_TARGETS += tarball
 
-# Translations included here (at top level) is to avoid regenerating the .qm files
-# every time when src.pro is processed
-include(src/lang/lang.pri)
-
 # For Qt Creator beautifier
 DISTFILES += \
     uncrustify.cfg

src/app/main.cpp

@@ -78,7 +78,7 @@ void sigNormalHandler(int signum);
 void sigAbnormalHandler(int signum);
 #endif
 // sys_signame[] is only defined in BSD
-const char *sysSigName[] = {
+const char *const sysSigName[] = {
 #if defined(Q_OS_WIN)
     "", "", "SIGINT", "", "SIGILL", "", "SIGABRT_COMPAT", "", "SIGFPE", "",
     "", "SIGSEGV", "", "", "", "SIGTERM", "", "", "", "",

src/lang/lang.pri

@@ -1,28 +0,0 @@
-TS_FILES += $$files(qbittorrent_*.ts)
-
-# need to use full path, otherwise running
-# `lupdate` will generate *.ts files in project root directory
-for(file, TS_FILES) {
-    TRANSLATIONS += "$${PWD}/$${file}"
-}
-
-isEmpty(QMAKE_LRELEASE) {
-    win32: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease.exe
-    else: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease
-    unix {
-        equals(QT_MAJOR_VERSION, 5) {
-            !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease-qt5
-        }
-    }
-    else {
-        !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease
-    }
-}
-
-message("Building translations")
-TS_FILES_NOEXT = $$replace(TS_FILES, ".ts", "")
-for(file, TS_FILES_NOEXT) {
-    message("Processing $${file}")
-    system("$$QMAKE_LRELEASE -silent $${file}.ts -qm $${file}.qm")
-    !exists("$${file}.qm"):error("Building translations failed, cannot continue")
-}

src/src.pro

@@ -66,6 +66,27 @@ include(base/base.pri)
 !nogui: include(gui/gui.pri)
 !nowebui: include(webui/webui.pri)
 
+isEmpty(QMAKE_LRELEASE) {
+    win32: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease.exe
+    else: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease
+    unix {
+        equals(QT_MAJOR_VERSION, 5) {
+            !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease-qt5
+        }
+    }
+    else {
+        !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease
+    }
+}
+lrelease.input = TS_SOURCES
+lrelease.output = ${QMAKE_FILE_PATH}/${QMAKE_FILE_BASE}.qm
+lrelease.commands = @echo "lrelease ${QMAKE_FILE_NAME}" && $$QMAKE_LRELEASE -silent ${QMAKE_FILE_NAME} -qm ${QMAKE_FILE_OUT}
+lrelease.CONFIG += no_link target_predeps
+QMAKE_EXTRA_COMPILERS += lrelease
+
+TRANSLATIONS = $$files($$PWD/lang/qbittorrent_*.ts)
+TS_SOURCES += $$TRANSLATIONS
+
 # Resource files
 QMAKE_RESOURCE_FLAGS += -compress 9 -threshold 5
 RESOURCES += \

src/webui/webui.pri

@@ -31,26 +31,6 @@ SOURCES += \
     $$PWD/webapplication.cpp \
     $$PWD/webui.cpp
 
-RESOURCES += $$PWD/www/webui.qrc $$PWD/www/translations/webui_translations.qrc
+TS_SOURCES += $$files($$PWD/www/translations/webui_*.ts)
 
-# WebUI Translation
-isEmpty(QMAKE_LRELEASE) {
-    win32: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease.exe
-    else: QMAKE_LRELEASE = $$[QT_INSTALL_BINS]/lrelease
-    unix {
-        equals(QT_MAJOR_VERSION, 5) {
-            !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease-qt5
-        }
-    }
-    else {
-        !exists($$QMAKE_LRELEASE): QMAKE_LRELEASE = lrelease
-    }
-}
-WEBUI_TRANSLATIONS = $$files(www/translations/webui_*.ts)
-WEBUI_TRANSLATIONS_NOEXT = $$replace(WEBUI_TRANSLATIONS, ".ts", "")
-message("Building WebUI translations...")
-for(L, WEBUI_TRANSLATIONS_NOEXT) {
-    message("Processing $${L}")
-    system("$$QMAKE_LRELEASE -silent $${L}.ts -qm $${L}.qm")
-    !exists("$${L}.qm"): error("Building WebUI translations failed, cannot continue!")
-}
+RESOURCES += $$PWD/www/webui.qrc $$PWD/www/translations/webui_translations.qrc