adding echo line for distutils.cfg

install_topfarm.bat

@@ -4,6 +4,8 @@ REM Create an environment for TOPFARM
 conda create -n pyTopfarm python=3.6 --yes
 REM Activate the environment
 call activate pyTopfarm
+REM Configure the compiler
+(echo [build] & echo compiler = mingw32) > %CONDA_PREFIX%\Lib\distutils\distutils.cfg
 REM Install WindIO and DTU's fork of FUSED-Wake
 pip install git+https://github.com/FUSED-Wind/windIO.git
 pip install git+https://gitlab.windenergy.dtu.dk/TOPFARM/FUSED-Wake.git