[LyX/master] Cmake build: Try to omit using directory names as source-files in po

[Kornel Benko]

commit aadfb583740a2e1be58201408e3fcccf720b8803
Author: Kornel Benko <kornel at lyx.org>
Date:   Mon Sep 7 21:12:22 2020 +0200

    Cmake build: Try to omit using directory names as source-files in po
    
    Previously there are po-entries like
      #: lib/examples/Articles:0 src/TocBackend.cpp:296
      #:src/frontends/qt/GuiExternal.cpp:87
      msgid "External Material"
      msgstr ""
    
    now:
      #: src/TocBackend.cpp:296 src/frontends/qt/GuiExternal.cpp:87
      #: lib/examples/Articles:0
      msgid "External Material"
      msgstr ""
    
    (The string at 'lib/examples/Articles:0' proceeds also from the directory name 'lib/examples/External_Material')
    
    This makes it easier to use some po-editors like 'linguist'
---
 development/cmake/modules/FindLyXGettext.cmake |    3 +-
 po/CMakeLists.txt                              |   45 ++++++++++++++++-------
 2 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/development/cmake/modules/FindLyXGettext.cmake b/development/cmake/modules/FindLyXGettext.cmake
index 8533cbf..61ccc8f 100755
--- a/development/cmake/modules/FindLyXGettext.cmake
+++ b/development/cmake/modules/FindLyXGettext.cmake
@@ -17,6 +17,7 @@ FIND_PROGRAM(GETTEXT_MSGMERGE_EXECUTABLE msgmerge ${hints})
 FIND_PROGRAM(GETTEXT_MSGFMT_EXECUTABLE   msgfmt   ${hints})
 FIND_PROGRAM(GETTEXT_XGETTEXT_EXECUTABLE xgettext ${hints})
 FIND_PROGRAM(GETTEXT_MSGUNIQ_EXECUTABLE  msguniq  ${hints})
+FIND_PROGRAM(GETTEXT_MSGCAT_EXECUTABLE  msgcat  ${hints})
 
 MACRO(GETTEXT_CREATE_TRANSLATIONS _potFile _firstPoFile)
 
@@ -76,5 +77,5 @@ ELSE (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
    ENDIF (GetText_REQUIRED)
 ENDIF (GETTEXT_MSGMERGE_EXECUTABLE AND GETTEXT_MSGFMT_EXECUTABLE )
 
-mark_as_advanced(GETTEXT_MSGMERGE_EXECUTABLE GETTEXT_MSGFMT_EXECUTABLE GETTEXT_XGETTEXT_EXECUTABLE GETTEXT_MSGUNIQ_EXECUTABLE)
+mark_as_advanced(GETTEXT_MSGMERGE_EXECUTABLE GETTEXT_MSGFMT_EXECUTABLE GETTEXT_XGETTEXT_EXECUTABLE GETTEXT_MSGUNIQ_EXECUTABLE GETTEXT_MSGCAT_EXECUTABLE)
 
diff --git a/po/CMakeLists.txt b/po/CMakeLists.txt
index fd14bd2..065448e 100755
--- a/po/CMakeLists.txt
+++ b/po/CMakeLists.txt
@@ -104,9 +104,9 @@ add_gettext_python(encodings lib encodings)
 add_gettext_python(ui lib/ui *.ui *.inc)
 add_gettext_python(external lib/xtemplates *.xtemplate)
 add_gettext_python(formats lib configure.py)
-add_gettext_python(examples_templates lib examples/[a-zA-Z]* templates/[a-zA-Z]*)
 add_gettext_python(tabletemplates lib tabletemplates/*.lyx)
 add_gettext_python(qt src/frontends/qt/ui *.ui)
+add_gettext_python(examples_templates lib examples/[a-zA-Z]* templates/[a-zA-Z]*)
 
 ADD_CUSTOM_COMMAND(
     OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.cat.pot"
@@ -145,20 +145,37 @@ execute_process(
   COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CMAKE_CURRENT_BINARY_DIR}/POTFILES.in.tmp" "${CMAKE_CURRENT_BINARY_DIR}/POTFILES.in"
   )
 
-ADD_CUSTOM_COMMAND(
-    OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
-    COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
-    COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE}
-      --from-code=UTF-8
-      --default-domain=${_lyxname} --directory=${TOP_SRC_DIR}
-      --add-comments=TRANSLATORS:
-      --language=C++ --join-existing --keyword=_ --keyword=N_ --keyword=B_ --keyword=qt_
-      --files-from=${CMAKE_CURRENT_BINARY_DIR}/POTFILES.in
-      --copyright-holder="LyX Developers" --msgid-bugs-address=lyx-devel at lists.lyx.org
-      -o "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
-    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" ${_potfiles_dep}
-    )
+if (GETTEXT_MSGCAT_EXECUTABLE)
+  ADD_CUSTOM_COMMAND(
+	OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
+	COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE}
+	--from-code=UTF-8
+	--default-domain=${_lyxname} --directory=${TOP_SRC_DIR}
+	--add-comments=TRANSLATORS:
+	--language=C++ --keyword=_ --keyword=N_ --keyword=B_ --keyword=qt_
+	--files-from=${CMAKE_CURRENT_BINARY_DIR}/POTFILES.in
+	--copyright-holder="LyX Developers" --msgid-bugs-address=lyx-devel at lists.lyx.org
+	-o "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.src.pot"
+	COMMAND ${GETTEXT_MSGCAT_EXECUTABLE} "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.src.pot" "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" -o "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
+	DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" ${_potfiles_dep}
+  )
 
+else()
+  ADD_CUSTOM_COMMAND(
+	OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
+	COMMAND ${CMAKE_COMMAD} -E copy "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
+	COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE}
+	--from-code=UTF-8
+	--default-domain=${_lyxname} --directory=${TOP_SRC_DIR}
+	--add-comments=TRANSLATORS:
+	--language=C++ --join-existing --keyword=_ --keyword=N_ --keyword=B_ --keyword=qt_
+	--files-from=${CMAKE_CURRENT_BINARY_DIR}/POTFILES.in
+	--copyright-holder="LyX Developers" --msgid-bugs-address=lyx-devel at lists.lyx.org
+	-o "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.pot"
+	DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${_lyxname}.fmt.pot" ${_potfiles_dep}
+  )
+
+endif()
 #
 # We have to copy the po-files first,
 # otherwise they would be modified (inside the macro GETTEXT_CREATE_TRANSLATIONS())