Hi,
thanks for the response. I was eager to solve this. I came up with this solution:
-I$<JOIN:$<TARGET_PROPERTY:dummy,INCLUDE_DIRECTORIES>,\t-I>
I searched for a solution where i can use it without the quotes while the tab (\t) takes care
that it is recognized as a generator _expression_. Now my command line looks a little bit odd
with all this tabs but it works.
I choosed the \t because i need spaces between the arguments and there is no escape
sequence for spaces.
So i simply wonder whether it is possible to add to cmake something like \s for a space.
Jerry
On 31.05.2016 16:22, Brad King wrote:
> On 05/28/2016 01:15 PM, jerry....@web.de wrote:>> "-I$<JOIN:$<TARGET_PROPERTY:dummy,INCLUDE_DIRECTORIES>, -I>"
>
> This tells CMake to generate a single argument consisting of the
> entire expanded value. We have no syntax to expand lists into
> multiple command line arguments after evaluation of generator
> expressions. Without the quotes the "$<" and ">" parts appear
> in different arguments to add_custom_command and so it is not
> recognized as a generator _expression_.
>
> It is not currently possible to do what you are trying to do.
> You'll need to use file(GENERATE) to produce a script holding
> the desired command instead. Then launch the script as the
> custom target's command.
>
> -Brad
>
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