[Cmake] 2 x configure_file

[Dekeyser, Kris]

Consider three projects A, B and C and B depends on A and C depends on A. I
want to have a workspace with A and B and a separate one with A and C. So I
created:

SUBDIRS(A)
SUBDIRS(B)
SUBDIRS(EXCLUDE_FROM_ALL C)

and in subdir C:
SUBDIRS(../A)
SUBDIRS(C)

This worked fine until I rolled out a system where during the CMake run a
couple of files are generated in the binary dir that contain settings needed
by dependend projects (something like the PackageConfig system). I used
CONFIGURE_FILE( ... IMMEDIATE) for that.

The problem is that CMake encounters the project A twice and also tried to
run the CONFIGURE_FILE twice on the same file. This fails with:

CMake Error: Error in cmake code at
n:/edmvob/TecManager/LmsHq/Administration/DataServerBuild_v1/CMake/EdmMacros
/BuildMacros.cmake:265:
CONFIGURE_FILE Problem configuring file

I assume the file is still open by the first command.

I currently removed the duplicates to workaround, but is there another way
to get around this, keeping the (duplicate) dependent projects in the
sub-project's workspace and still generating all workspaces in one go?

My config: CMake 2.0.3 - WinXP SP1 - MsDev 6 SP5
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