Error by building druntime

[Namespace]

I tried to fork and build dmd, druntime and phobos. With dmd it 
works fine but if I try "make -f win32.mak" on druntime I get:
[code]
src\core\sys\windows\windows.d(81): Warning: else is dangling, 
add { } after con
dition at src\core\sys\windows\windows.d(17)
src\core\sys\windows\windows.d(164): Warning: else is dangling, 
add { } after co
ndition at src\core\sys\windows\windows.d(17)
src\core\sys\windows\windows.d(1286): Warning: else is dangling, 
add { } after c
ondition at src\core\sys\windows\windows.d(17)
src\rt\arraycast.d(33): Error: object.Error is thrown but not 
caught
src\rt\arraycast.d(26): Error: function rt.arraycast._d_arraycast 
'_d_arraycast'
  is nothrow yet may throw
src\rt\arraycat.d(36): Error: object.Error is thrown but not 
caught
src\rt\arraycat.d(45): Error: object.Error is thrown but not 
caught
src\rt\arraycat.d(25): Error: function rt.arraycat._d_arraycopy 
'_d_arraycopy' i
s nothrow yet may throw
[/code]

Is that my fault? :o
Is there any official manual for building dmd, druntime and 
phobos?