External build breaks if library path has spaces

[hkaiser]

Any external build (which is based on FindHPX.cmake) will fail if the original HPX build depends on library or include paths containing a space. For instance, on windows, if HPX was built with ITT support enabled (which adds the Intel tools to the include and library paths), FindHPX.cmake will look like:

set(HPX_LIBRARY_DIR  
    D:/Devel/hpx/build/Debug.vc10/\$(Configuration)/lib/hpx
    D:/Devel/hpx/build/Debug.vc10/Debug/lib/hpx 
    D:/Devel/boost/stage64/lib 
    D:/Devel/hwloc-1.6.1rc1/lib 
    C:/Program\ Files\ (x86)/Intel/Inspector\ XE\ 2013/lib64
        CACHE STRING "HPX library directories")

If this FindHPX.cmake is used with an external project, the cmake cache of this project will look like:

HPX_LIBRARY_DIR:STRING=\
    D:/Devel/hpx/build/Debug.vc10/$(Configuration)/lib/hpx;\
    D:/Devel/hpx/build/Debug.vc10/Debug/lib/hpx;\
    D:/Devel/boost/stage64/lib;\
    D:/Devel/hwloc-1.6.1rc1/lib;\
    C:/Program Files ;(;x86;);/Intel/Inspector XE 2013/lib64

breaking the build.
The solution is to surround the paths in the FindHPX.cmake file with quotes:

set(HPX_LIBRARY_DIR  
    "D:/Devel/hpx/build/Debug.vc10/\$(Configuration)/lib/hpx"
    "D:/Devel/hpx/build/Debug.vc10/Debug/lib/hpx"
    "D:/Devel/boost/stage64/lib"
    "D:/Devel/hwloc-1.6.1rc1/lib"
    "C:/Program\ Files\ (x86)/Intel/Inspector\ XE\ 2013/lib64"
        CACHE STRING "HPX library directories")

[hkaiser]

As it seems it's not the space which is problematic, but the parentheses.