csrc/crosstool-ng-1.20.0/config/companion_libs.in

# 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 COMPLIBS_NEEDED
    bool

config GMP_NEEDED
    bool
    select GMP
    select COMPLIBS_NEEDED

config MPFR_NEEDED
    bool
    select MPFR
    select COMPLIBS_NEEDED

config PPL_NEEDED
    bool
    select PPL
    select COMPLIBS_NEEDED

config ISL_NEEDED
    bool
    select ISL
    select COMPLIBS_NEEDED

config CLOOG_NEEDED
    bool
    select CLOOG
    select COMPLIBS_NEEDED

config MPC_NEEDED
    bool
    select MPC
    select COMPLIBS_NEEDED

config LIBELF_NEEDED
    bool
    select LIBELF
    select COMPLIBS_NEEDED

config COMPLIBS
    bool

config GMP
    bool
    select COMPLIBS

config MPFR
    bool
    select GMP
    select COMPLIBS

config PPL
    bool
    select GMP
    select COMPLIBS

config ISL
    bool
    select GMP
    select COMPLIBS

config CLOOG
    bool
    select GMP
    select COMPLIBS

config MPC
    bool
    select GMP
    select MPFR
    select COMPLIBS

config LIBELF
    bool
    select COMPLIBS

config LIBELF_TARGET
    bool

if GMP
source "config/companion_libs/gmp.in"
endif
if MPFR
source "config/companion_libs/mpfr.in"
endif
if PPL
source "config/companion_libs/ppl.in"
endif
if ISL
source "config/companion_libs/isl.in"
endif
if CLOOG
source "config/companion_libs/cloog.in"
endif
if MPC
source "config/companion_libs/mpc.in"
endif
if LIBELF || LIBELF_TARGET
comment "libelf version needed to build for target"
    depends on !LIBELF
source "config/companion_libs/libelf.in"
endif

config FOO
    bool

if COMPLIBS

comment "Companion libraries common options"

config COMPLIBS_CHECK
    bool
    prompt "Check the companion libraries builds (!!! READ HELP!!!)"
    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'...

endif # COMPLIBS

endmenu