Building PoCo for win_cb via apothecary in openFrameworks git?

This is in a git-bash.exe shell on Windows:

MYNAME MINGW32 /z/PATHTO/openFrameworks/scripts/apothecary ((16eca45...))
$ ./apothecary -t win_cb update poco

 ----- poco -----

 Downloading "poco"

SHA== https://github.com/pocoproject/poco
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   136    0   136    0     0    147      0 --:--:-- --:--:-- --:--:--   152
100 7232k    0 7232k    0     0  2015k      0 --:--:--  0:00:03 --:--:-- 4136k

 Preparing "poco"


 Building "poco"

Configured for MinGW
Z:/PATHTO/mingw-w64/i686-4.9.3-posix-dwarf-rt_v4-rev1/mingw32/bin/make -C Z:/PATHTO/openFrameworks/scripts/apothecary/build/poco/Foundation
make[1]: Entering directory 'Z:/PATHTO/openFrameworks/scripts/apothecary/build/poco/Foundation'
Z:/PATHTO/openFrameworks/scripts/apothecary/build/poco/build/rules/global:62: *** Current working directory not under $PROJECT_BASE.  Stop.
make[1]: Leaving directory 'Z:/PATHTO/openFrameworks/scripts/apothecary/build/poco/Foundation'
makefile:69: recipe for target 'Foundation-libexec' failed
make: *** [Foundation-libexec] Error 2

 ^ Received error ^

How is this build process supposed to work - and is it even possible for Windows/MinGW (CodeBlocks)?