[CMake] CMakeLists.txt location

[Alain Miniussi]

On 13/09/2017 12:49, Nils Gladitz wrote:
>  [...]
> Do you have a minimal reproducible example for that behaviour?
>
>
> e.g. given:
>
>    cmake_minimum_required(VERSION 2.8.0)
>
>     project(Foo NONE)
>
>     file(WRITE foo/CMakeLists.txt "add_executable()")
>
>     add_subdirectory(foo)
>
>
> I get:
>
>     CMake Error at foo/CMakeLists.txt:1 (add_executable):
>       add_executable called with incorrect number of arguments
>
>
> Even with the oldest CMake version currently available to me (2.8.0).
That test case works for me too. But my real case does not.
I think it would be tricky to minimized, what is failling is the second 
run of cmake, after a modification in the build system or in a 
configure_file source.

--------------------------------
CMake Error at CMakeLists.txt:14 (add_executable):
   Target "cmTC_60ee6" links to item " -Xlinker --enable-new-dtags -Xlinker
   -rpath -Xlinker
   /opt/software/common/intel/impi/2017.0.098/intel64/lib/release_mt 
-Xlinker
   -rpath -Xlinker /opt/software/common/intel/impi/2017.0.098/intel64/lib
   -Xlinker -rpath -Xlinker 
/opt/intel/mpi-rt/2017.0.0/intel64/lib/release_mt
   -Xlinker -rpath -Xlinker /opt/intel/mpi-rt/2017.0.0/intel64/lib
/opt/software/occigen/libraries/boost/1_63_0/intel/17.0/intelmpi/2017.0.098/lib/libboost_serialization.a"
   which has leading or trailing whitespace.  This is now an error according
   to policy CMP0004.


CMake Error: Internal CMake error, TryCompile generation of cmake failed
INFO   Boost MPI not available or too old:
--------------------------------

Now, maybe the problem is with a CMakeLists.tx generated by a try_compile.
Indicating that I would actually need the location of the try_compile.

Thanks

Alain

>
>
> Nils
>