[CMake] add_test : expand environment variable at running time

[Tyler Roscoe]

On Mon, Sep 13, 2010 at 06:01:52PM +0200, Olivier Pierard wrote:
> - add_test( mpirun -machinefile $TMPDIR myexec ) => will never expand
> TMPDIR  - I don't understand why because in CTestTestfile.cmake, I have
> add_test( test_name "mpirun" "-machinefile" "$TMPDIR" "myexec"); if I
> submit this as a bash command, environment variable is well expanded; 
> Does ctest prevent expanding variables at running time ?
> 
> - add_test( mpirun -machinefile ${TMPDIR} myexec ) => expands at
> configuration time with cmake (empty because not defined in cmake - logical)
> 
> - add_test( mpirun -machinefile $ENV{TMPDIR} myexec ) => expands at
> configuration time with cmake but TMPDIR is not yet defined on the
> master node (logical)

How about add_test (... \$TMPDIR ... )
?

tyler