[CMake] A doubt about macros, relative paths and long args

[Leopold Palomo Avellaneda]

Hi,
I'm trying to create a macro for the xgettext program, adding a 
messages_extract target.

I got a lot of problems, and I really don't know what I'm doing wrong.

First of all, I would like to add \ to a variable, in the way that when I pass 
it to a COMMAND it receive a line feed. I don't know how to do it, I have had 
a lot of problems trying it. I finally have put all the parameters in a very 
long line.

Second, in the macro, I pass two parameters: template and sources, Where, 
template is the name of the target (+.pot the file) and sources is a list of 
the sources to explore. I would like to pass the relative path , the name of 
the file, not the complete full path. How can I do it?

The macro source....


macro(GETTEXT_CREATE_TEMPLATE template sources )
set (XGETTEXT_OPTIONS "--qt --keyword=tr 
	--flag=tr:1:pass-c-format 
	--flag=tr:1:pass-qt-format 
	--keyword=trUtf8 
	--flag=tr:1:pass-c-format 
	--flag=tr:1:pass-qt-format 
	--keyword=translate:2 
	--flag=translate:2:pass-c-format 
	--flag=translate:2:pass-qt-format --keyword=QT_TR_NOOP 
	--flag=QT_TR_NOOP:1:pass-c-format --flag=QT_TR_NOOP:1:pass-qt-format 
	--keyword=QT_TRANSLATE_NOOP:2 --flag=QT_TRANSLATE_NOOP:2:pass-c-format 
	--flag=QT_TRANSLATE_NOOP:2:pass-qt-format --keyword=_ 
	--flag=_:1:pass-c-format --flag=_:1:pass-qt-format
	--keyword=N_ --flag=N_:1:pass-c-format --flag=N_:1:pass-qt-format --from-code=utf-8")

add_custom_command( 
		OUTPUT ${template}.pot
		COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE} 
        ARGS "--add-comments=TRANSLATORS: 		
		${XGETTEXT_OPTIONS}   --foreign-user 
		-o ${CURRENT_SOURCE_DIR}/${template}.pot ${sources}"
        DEPENDS ${template})

add_custom_target( messages_extract DEPENDS ${template}.pot)

endmacro( GETTEXT_CREATE_TEMPLATE)

Regards,

Leo

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