From c9d36b1302dc5caf2d1db03e8fb284cbb2255ace Mon Sep 17 00:00:00 2001
From: xiphon <xiphon@protonmail.com>
Date: Thu, 9 Jul 2020 15:13:21 +0000
Subject: cmake: translations deps handling, build translations as a library

---
 translations/CMakeLists.txt | 47 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 36 insertions(+), 11 deletions(-)

(limited to 'translations')

diff --git a/translations/CMakeLists.txt b/translations/CMakeLists.txt
index 8f1c0bc6..ab10fa4a 100644
--- a/translations/CMakeLists.txt
+++ b/translations/CMakeLists.txt
@@ -1,23 +1,48 @@
+find_package(Qt5Core REQUIRED)
+
+find_package(Qt5LinguistTools QUIET)
+if(NOT Qt5_LRELEASE_EXECUTABLE)
+  find_program(Qt5_LRELEASE_EXECUTABLE lrelease REQUIRED)
+endif()
+
 file(GLOB TS_FILES *.ts)
 
-set(QRC "<RCC><qresource prefix=\"/\">")
+set(QM_FILES)
+set(QRC_CONTENTS "<RCC><qresource prefix=\"/\">")
 foreach(TS_FILE ${TS_FILES})
   get_filename_component(QM_FILE ${TS_FILE} NAME_WE)
   set(QM_FILE ${CMAKE_CURRENT_BINARY_DIR}/${QM_FILE}.qm)
+  list(APPEND QM_FILES ${QM_FILE})
 
-  execute_process(COMMAND lrelease -compress -nounfinished -removeidentical ${TS_FILE} -qm ${QM_FILE}
-    RESULT_VARIABLE RET
-    OUTPUT_VARIABLE OUT
-    ERROR_VARIABLE ERR
+  add_custom_command(
+    OUTPUT ${QM_FILE}
+    COMMAND ${Qt5_LRELEASE_EXECUTABLE} -compress -nounfinished -removeidentical ${TS_FILE} -qm ${QM_FILE}
+    DEPENDS ${TS_FILE}
   )
-  if(RET)
-    message(FATAL_ERROR "${TS_FILE}: lrelease returned non-zero exit code: ${RET} ${OUT} ${ERR}")
-  endif()
 
   get_filename_component(QM_FILE_NAME ${QM_FILE} NAME)
-  string(APPEND QRC "<file>${QM_FILE_NAME}</file>")
+  string(APPEND QRC_CONTENTS "<file>${QM_FILE_NAME}</file>")
 endforeach()
-string(APPEND QRC "</qresource></RCC>")
+string(APPEND QRC_CONTENTS "</qresource></RCC>")
 
 set(TRANSLATIONS_QRC ${CMAKE_CURRENT_BINARY_DIR}/translations.qrc)
-file(WRITE ${TRANSLATIONS_QRC} ${QRC})
+add_custom_command(
+  OUTPUT ${TRANSLATIONS_QRC}
+  COMMAND echo ${QRC_CONTENTS} > ${TRANSLATIONS_QRC}
+  VERBATIM
+)
+set_source_files_properties(${TRANSLATIONS_QRC} PROPERTIES SKIP_AUTORCC ON)
+
+set(TRANSLATIONS_CPP ${CMAKE_CURRENT_BINARY_DIR}/qrc_translations.cpp)
+add_custom_command(
+  OUTPUT ${TRANSLATIONS_CPP}
+  COMMAND ${Qt5Core_RCC_EXECUTABLE}
+  ARGS --name translations --output ${TRANSLATIONS_CPP} ${TRANSLATIONS_QRC}
+  MAIN_DEPENDENCY ${TRANSLATIONS_QRC}
+  DEPENDS ${QM_FILES}
+  VERBATIM
+)
+set_source_files_properties(${TRANSLATIONS_CPP} PROPERTIES SKIP_AUTOMOC ON)
+set_source_files_properties(${TRANSLATIONS_CPP} PROPERTIES SKIP_AUTOUIC ON)
+
+add_library(translations ${TRANSLATIONS_CPP})
-- 
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