# Companion libraries config options

# Those libraries are required for different versions of gcc,

# and can be used by binutils and gdb (maybe others as well).

menu "Companion libraries"

config WRAPPER_NEEDED

    bool

    default n

config GMP_MPFR

    bool

    prompt "GMP and MPFR"

    select WRAPPER_NEEDED

    help

      gcc 4.3.0 and above requires both GMP and MPFR to build some frontends,

      and some other components can use them as well.

      These will be automatically selected if you choose gcc>=4.3.0, but you

      can say 'Y' here if you want to build those two libraries for the other

      components (that don't select them by default).

      The packages that can use GMP and MPFR are:

        - binutils

        - gcc

        - gdb

if GMP_MPFR

source config/companion_libs/gmp.in

source config/companion_libs/mpfr.in

endif

config PPL_CLOOG_MPC

    bool

    prompt "PPL, GLooG/PPL and MPC"

    select GMP_MPFR

    select WRAPPER_NEEDED

    help

      gcc-4.4.0 and above requires PPL and CLooG/PPL to build some parts

      of the optimiser (GRAPHITE loop optimisation, to be precise).

      In addition to those, gcc-4.4 also optionally uses MPC to enable

      additional optimisations on complex numbers. Although MPC is optional,

      crosstool-NG requires it and uses it to build gcc >= 4.4.0.

      These will be automatically selected if you choose gcc>=4.4.0, but you

      can say 'Y' here, although it is unknown yet if any other component

      can use them.

if PPL_CLOOG_MPC

source config/companion_libs/ppl.in

source config/companion_libs/cloog.in

source config/companion_libs/mpc.in

endif

config FOO

    bool

comment "Companion libraries common options"

    depends on GMP_MPFR || PPL_CLOOG_MPC

config COMP_LIBS_CHECK

    bool

    prompt "|  Check the companion libraries builds (!!! READ HELP!!!)"

    depends on GMP_MPFR || PPL_CLOOG_MPC

    default n

    help

      It is highly recommended to check the newly built companion libraries.

      Unfortunately, this is a very intensive task, and takes a loooong time.

      Checking the newly built companion libraries is thus disabled by default,

      but it is suggested that you check them at least once on your machine,

      and if they work, disable the check on subsequent builds.

      If you suspect that one (or more) of your companion libraries is the

      cause for incorrectly generated code, you should answer 'Y' here.

      Note however that this will take a really long time. For example,

      building PPL on my machine takes roughly 1'40", while checking it takes

      about 1h40'...

config COMP_LIBS_TARGET

    bool

    prompt "|  Build companion libraries for the target"

    depends on GMP_MPFR || PPL_CLOOG_MPC

    depends on ! BARE_METAL

    default n

    help

      Also build companion libraries for the target. This can be usefull if

      you want to later build a compiler that will run on the target, or if

      you want to run gdb natively on the target.

      Please note that for now, crosstool-NG can only build GMP and MPFR so.

endmenu