# HG changeset patch

 # Parent 23e27fc054b699f1f6530ef0458d990b1f834599

 # User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 # Date 1284399119 -7200

 complibs: add option to use distro-provided libs

 Now that some distros are catching up (eg. Debian testing at least),

 add an option to use companion libs from the distro.

 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 diff --git a/config/companion_libs.in b/config/companion_libs.in

 --- a/config/companion_libs.in

 +++ b/config/companion_libs.in

 @@ -4,6 +4,42 @@

  menu "Companion libraries"

 +config COMPLIBS_DISTRO

 +    bool

 +    prompt "Trust companion libraries from the distro (READ HELP!)"

 +    default n

 +    depends on COMPLIBS_NEEDED

 +    depends on EXPERIMENTAL

 +    help

 +      Most of the distributions current as of this writing lack the proper

 +      version of the required companion libraries, or do not even package

 +      those.  For example Debian Lenny has too old a version for PPL, and

 +      does not provide MPC and CLooG.

 +      

 +      But now distributions are catching up, and some (most?) of them do

 +      package the proper versions of those libraries. For example again,

 +      Debian Squeeze (still in testing) has the proper versions now.

 +      

 +      If you want to trust your distribution for providing the companion

 +      libraries, say 'Y' here, or if you want crosstool-NG to build them

 +      for you, say 'N'.

 +      

 +      The default is 'N', to cope with stable productions systems that most

 +      probably are using proven-stable distributions, and can not upgrade.

 +      

 +      Also, this is still experimental, so you'd better say 'N' if you are

 +      not sure.

 +      

 +      Note-1: if you say 'Y' here, it is very probable that the libraries

 +      will be linked in dynamically, and not static. This is not an issue

 +      if you keep the toolchain on the machine where it was built, but can

 +      become one if you want to move the toolchain to another machine, with

 +      an older distro. You've been warned!

 +      

 +      Note-2: for now, this is an all-from-distro or all-from-crosstool-NG

 +      setting. You can't use one lib from the distro, and build another

 +      one from crosstool-NG.

 +

  config COMPLIBS_NEEDED

      bool

      default n

 @@ -11,37 +47,37 @@

  config GMP_NEEDED

      bool

      default n

 -    select GMP

 +    select GMP      if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config MPFR_NEEDED

      bool

      default n

 -    select MPFR

 +    select MPFR     if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config PPL_NEEDED

      bool

      default n

 -    select PPL

 +    select PPL      if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config CLOOG_NEEDED

      bool

      default n

 -    select CLOOG

 +    select CLOOG    if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config MPC_NEEDED

      bool

      default n

 -    select MPC

 +    select MPC      if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config LIBELF_NEEDED

      bool

      default n

 -    select LIBELF

 +    select LIBELF   if ! COMPLIBS_DISTRO

      select COMPLIBS_NEEDED

  config COMPLIBS