allow xpm_cpp_path to be set at configure time

# Generate a static library target named "bitmaps"

# Generate a static library target named "bitmaps"

# (with filename libbitmaps.a on Linux)

# (with filename libbitmaps.a on Linux)

# Copy the *.xmp files to bitmaps/${XMP_CPP_DIR}/${BASENAME}.cpp, on change only.

# Copy the *.xpm files to ${XPM_CPP_PATH}/*.cpp, on change only.

# Compile those *.cpp files and put them into the library, then done.

# Compile those *.cpp files and put them into the library, then done.

set(BITMAP_SRCS

set(BITMAP_SRCS

    viewlibs_icon.xpm

    viewlibs_icon.xpm

    )

    )

# The name of the directory to put the copied and renamed *.xpm files into

# just below the bitmaps directory.  As files are copied they are renamed to *.cpp.

set(XMP_CPP_DIR auto_renamed_to_cpp)

# Get the path of the *.xpm files into "PATH"

# Get the path of the *.xpm files into "PATH"

set(PATH ${CMAKE_CURRENT_SOURCE_DIR})

set(PATH ${CMAKE_CURRENT_SOURCE_DIR})

#message("PATH = ${PATH}")

#message("PATH = ${PATH}")

# The name of the directory to put the copied and renamed *.xpm files into.

# As files are copied they are renamed to *.cpp.

set(XPM_CPP_PATH "${PATH}/auto_renamed_to_cpp" CACHE PATH "path to store renamed .xpm files for compilation" )

foreach(LOOP_VAR ${BITMAP_SRCS})

foreach(LOOP_VAR ${BITMAP_SRCS})

    get_filename_component(BASENAME ${LOOP_VAR} NAME_WE)

    get_filename_component(BASENAME ${LOOP_VAR} NAME_WE)

    set(CPP_BITMAP "${PATH}/${XMP_CPP_DIR}/${BASENAME}.cpp")

    set(CPP_BITMAP "${XPM_CPP_PATH}/${BASENAME}.cpp")

    add_custom_command(

    add_custom_command(

        OUTPUT ${CPP_BITMAP}

        OUTPUT ${CPP_BITMAP}

        COMMAND cmake -E copy '${PATH}/${BASENAME}.xpm' '${CPP_BITMAP}'

        COMMAND cmake -E copy '${PATH}/${BASENAME}.xpm' '${CPP_BITMAP}'