Single character folders being treated as Directories

[ashish-gawali-adi]

While building the directory C:/some/p/direc is being replaced to C:/some/p:direc the culprit is line | sed -r -e 's/\/([A-Za-z])\//\1:\//g' in gcc.mk. The line needs to be updated to | sed -r -e 's/ \/([A-Za-z])\// \1:\//g'