[MacPorts] #60129: poco, where are the cmake files

[MacPorts]

#60129: poco, where are the cmake files
----------------------------+------------------------------
  Reporter:  gaming-hacker  |      Owner:  arjanvandervelde
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.6.2
Resolution:                 |   Keywords:
      Port:  poco           |
----------------------------+------------------------------

Comment (by gaming-hacker):

 poco has been building with cmake for a while

 https://github.com/pocoproject/poco/

 ```
 Building with CMake (Linux, macOS, Windows)

 CMake (version 3.5 or newer) is the recommended build system for building
 the POCO C++ Libraries.

 $ git clone -b master https://github.com/pocoproject/poco.git
 $ cd poco
 $ mkdir cmake-build
 $ cd cmake-build
 $ cmake ..
 $ cmake --build . --config Release
 ```

-- 
Ticket URL: <https://trac.macports.org/ticket/60129#comment:5>
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