or download this
echo Setting Path to Strawberry Perl
set STRAWBERRY=%U3_DEVICE_PATH%\strawberry
...
set LIB=%STRAWBERRY%\c\lib;%STRAWBERRY%\perl\bin;%LIB%
set INCLUDE=%STRAWBERRY%\c\include;%STRAWBERRY%\perl\lib\CORE;%INCLUDE
+%
set PKG_CONFIG_PATH=%STRAWBERRY%\lib\pkgconfig