make[4]: Entering directory `/home/robzon/tmp/monodevelop/Core/src/Tools/mdhost'
/usr/local/bin/mcs -langversion:ISO-1 ./src/AssemblyInfo.cs ./src/mdhost.cs  -r:../../../../build/bin/MonoDevelop.Core.dll \  -out:../../../../build/bin/mdhost.exe

Unhandled Exception: System.ArgumentException: The specified path is not of a legal form (empty).
Parameter name: path
in <0x0024f> System.IO.Path:InsecureGetFullPath (System.String path)
in <0x0000f> System.IO.Path:GetFullPath (System.String path)
in <0x0001c> Mono.CSharp.Location:AddFile (System.String name)
in <0x00026> Mono.CSharp.Driver:ProcessFile (System.String f)
in <0x00091> Mono.CSharp.Driver:CompileFiles (System.String spec, Boolean recurse)
in <0x003b2> Mono.CSharp.Driver:MainDriver (System.String[] args)
in <0x00041> Mono.CSharp.Driver:Main (System.String[] args)
make[4]: *** [../../../../build/bin/mdhost.exe] Error 1
make[4]: Leaving directory `/home/robzon/tmp/monodevelop/Core/src/Tools/mdhost'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/robzon/tmp/monodevelop/Core/src/Tools'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/robzon/tmp/monodevelop/Core/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/robzon/tmp/monodevelop/Core'
make: *** [all-recursive] Error 1