[CMake] Problem with TRY_RUN

[Bill Hoffman]

Eduardo Alberto Hernández Muñoz wrote:
> Hi list,
> 
> I'm trying to add a version check to the FindOpenAL.cmake module.
> Here's the relevant part:
> 
>     TRY_RUN (
>         OPENAL_VERSION_1_1
>         OPENAL_COMPILED
>         ${CMAKE_BINARY_DIR}
>         ${CMAKE_SOURCE_DIR}/check_openal_version_1_1.cpp
>         )
> 
> A simple 'g++ check_openal_version_1_1.cpp' compiles well in a
> terminal, but OPENAL_COMPILED is set to FALSE. Upon checking the
> makefile generated with 'cmake --debug-trycompile', I see this error:
> 
> [...]
> Scanning dependencies of target cmTryCompileExec
> make[2]: Leaving directory
> `/home/coz/Proyectos/STK_Ex/supertuxkart/build/obj/CMakeFiles/CMakeTmp'
> make -f CMakeFiles/cmTryCompileExec.dir/build.make
> CMakeFiles/cmTryCompileExec.dir/build
> make[2]: Entering directory
> `/home/coz/Proyectos/STK_Ex/supertuxkart/build/obj/CMakeFiles/CMakeTmp'
> make[2]: *** No rule to make target
> `/home/coz/Proyectos/STK_Ex/supertuxkart/build/check_openal_version_1_1.cpp',
> needed by `CMakeFiles/cmTryCompileExec.dir/check_openal_version_1_1.cpp.o'.
>  Stop.
> make[2]: Leaving directory
> `/home/coz/Proyectos/STK_Ex/supertuxkart/build/obj/CMakeFiles/CMakeTmp'
> make[1]: *** [CMakeFiles/cmTryCompileExec.dir/all] Error 2
> make[1]: Leaving directory
> `/home/coz/Proyectos/STK_Ex/supertuxkart/build/obj/CMakeFiles/CMakeTmp'
> make: *** [all] Error 2
> [...]
> 
> In case you wonder, /home/coz/Proyectos/STK_Ex/supertuxkart/build/ is
> the correct directory; running CMake 2.6.0 .
> 

Does this file exist:

/home/coz/Proyectos/STK_Ex/supertuxkart/build/check_openal_version_1_1.cpp

-Bill