[CMake] CMake regexes: Case insensitive and whitespace matching

[Roman Wüger]

Hello Daniel,

I tried it also in various ways, but I think the Regex in Cmake is very limited. What has worked for me was to use try_run and implement a simple c++ application which uses C++11's <regex> and accept one or two command line arguments (~ 15 lines of code).

Hope it helps

Regards Roman

> Am 08.05.2017 um 15:19 schrieb Daniel Lueken <Daniel.Lueken at bmw-carit.de>:
> 
> Hi!
>  
> Is there any way to do case insensitive matching in string(REGEX … ?
> Also, is there a way to match whitespaces?
>  
> What I would like to do, speaking in Perl-like syntax, is something like
>  
> string(REGEX REPLACE “/something\s+/stuff/i” …
>  
> Not knowing how to do this, I am currently doing something along the lines of
>  
> string(REGEX REPLACE “[Ss][Oo][Mm][Ee][Tt][Hh][Ii][Nn][Gg][\\r\\n\\t ]+” …
>  
> which looks pretty wrong to me. Converting everything to upper or lower case is also not an option since parts of the input string in which I need to replace something are case sensitive.
>  
> Best regards
> Daniel Lueken
>  
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