Is there a conversion utility for converting NMAKE build files to CMAKE build files?

Or are you all laughing so hard that you can't type a response? :)

Bottom line is that one library we're using (GDAL) has an NMAKE build file that we'd like to incorporate into our CMAKE build process. But maybe NMAKE and CMAKE are apples and oranges?

Basic idea is to chain the second build system from the first.

In CMake:

Use something like

add_custom_command(
    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/nmake-target.dll
    COMMAND nmake
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Makefile
)

http://www.cmake.org/cmake/help/cmake2.6docs.html#command:add_custom_command

In SCons:

Use something like

env.Command ('nmake-target.dll', null, 'nmake')

http://scons.org/doc/2.1.0.alpha.20101125/HTML/scons-user/c3778.html