Without any configuration, trying to compile on Windows/MSVC from KDevelop gives an error when running "nmake -j2", because nmake doesn't support parallel builds, and thus doesn't have a -j option. KDevelop shouldn't pass the -j option when the build tool is nmake.
Fixed. commit 13da1b278439917a9904c051d04a3c53f0ef06df Author: Gleb Popov <6yearold@gmail.com> Date: Thu Dec 17 16:50:16 2015 +0300 Don't append -k and -j flags to command line when we are using nmake. Select default make tool based on which platform we are, not the compiler we using. On windows first try "make" (extremely rare), then "mingw32-make" and then "nmake".