# - Try to find LIBZ
#
# This can be controlled by setting the LIBZ_DIR (or, equivalently, the 
# LIBZ environment variable).
#
# Once done, this will define:
#
#   LIBZ_FOUND        (BOOL) - system has LIBZ
#   LIBZ_IS_SHARED    (BOOL) - whether library is shared/dynamic
#   LIBZ_INCLUDE_DIR  (PATH) - Location of the C header file
#   LIBZ_INCLUDE_DIRS (LIST) - the LIBZ include directories
#   LIBZ_LIBRARY      (FILE) - Path to the C library file
#   LIBZ_LIBRARIES    (LIST) - link these to use LIBZ
#
include (LibFind)

# Define LIBZ package
define_package_component (LIBZ
                          INCLUDE_NAMES zlib.h
                          LIBRARY_NAMES z)

# SEARCH FOR PACKAGE
if (NOT LIBZ_FOUND)

    # Manually add the MPI include and library dirs to search paths 
    # and search for the package component
    if (MPI_C_FOUND)
        initialize_paths (LIBZ_PATHS
                          INCLUDE_DIRECTORIES ${MPI_C_INCLUDE_PATH}
                          LIBRARIES ${MPI_C_LIBRARIES})
        find_package_component(LIBZ
                               PATHS ${LIBZ_PATHS})
    else ()
        find_package_component(LIBZ)
    endif ()

endif ()