[Cmake] nmake question

[John Biddiscombe]

When compiling cmake with nmake, I get the following error...
>>>
cl /nologo /W3 /Zm1000 /GX /GR -DWIN32 /MDd /Zi /Od /GZ -ID:\CMake\Source -ID:\c
makebuild\cmake\Source -ID:\CMake\Source -DCMAKE_BUILD_WITH_CMAKE -c D:\CMake\So
urce\cmake.cxx /Focmake.obj
cmake.cxx
d:\CMake\Source\cmStandardIncludes.h(41) : fatal error C1083: Cannot open includ
e file: 'fstream': No such file or directory
<<<

Why is the standard includes directory not being added to the search path? (I don't believe I have to add it manually. Could my MSVC dot net be installed badly? - I was a bit surprised that I had to add the path to nmake.exe myself too)

JB

(All builds fine when creating Vis studio 7 project files etc and building "solution")