[Cmake] Capture regular expressions

[Filipe Sousa]

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On Monday 03 May 2004 14:19, Brad King wrote:
> Filipe Sousa wrote:
> > I wrote my own FindQt.cmake so that I could find the right qt lib on
> > Windows. I need to extract the version from global.h. I managed that
> > using two STRING command, but I would like to capture version around
> > parentheses with regular expressions using only one STRING command. Is
> > this possible with cmake?
>
> What do you mean by "version around parentheses"?  Code like this is
> supported:
>
> STRING(REGEX REPLACE "#define[\\t\\ ]+QT_VERSION_STR[\\t\\
> ]+\"([0-9]+\\.[0-9]+\\.[0-9]+)\"" "\\1" qt_version "${VERSION_STR}")
>
> Note the "\\1" in the replace expression.  The two backslashes make it
> through argument processing as a single backslash, and then the "\1" is
> replaced by the part of the string matched inside the parentheses.

That's exactly what i've been looking for. I didn't known that i could do t=
hat=20
with STRING(REGEX REPLACE using "\\1". Is this feature well documented?

> -Brad
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> Cmake at www.cmake.org
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=2D- Filipe Sousa

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