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config/debug/gdb.in
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
parent 1874 712cdb6504aa
child 2168 974179cae714
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

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

     2 

     3 config DEBUG_gdb

     4     help

     5       Enable gdb for the target

     6 

     7 source "config/debug/gdb.in.cross"

     8 source "config/debug/gdb.in.native"

     9 source "config/debug/gdb.in.gdbserver"

    10 

    11 choice

    12     bool

    13     prompt "gdb version"

    14     depends on GDB_CROSS || GDB_NATIVE || GDB_GDBSERVER

    15 # Don't remove next line

    16 # CT_INSERT_VERSION_BELOW

    17 

    18 config GDB_V_7_1

    19     bool

    20     prompt "7.1 (EXPERIMENTAL)"

    21     depends on EXPERIMENTAL

    22     select GDB_7_0_or_later

    23 

    24 config GDB_V_7_0_1

    25     bool

    26     prompt "7.0.1 (EXPERIMENTAL)"

    27     depends on EXPERIMENTAL

    28     select GDB_7_0_or_later

    29 

    30 config GDB_V_7_0

    31     bool

    32     prompt "7.0 (EXPERIMENTAL)"

    33     depends on EXPERIMENTAL

    34     select GDB_7_0_or_later

    35 

    36 config GDB_V_6_8

    37     bool

    38     prompt "6.8"

    39 

    40 endchoice

    41 

    42 config GDB_7_0_or_later

    43     bool

    44 

    45 config GDB_VERSION

    46     string

    47 # Don't remove next line

    48 # CT_INSERT_VERSION_STRING_BELOW

    49     default "7.1" if GDB_V_7_1

    50     default "7.0.1" if GDB_V_7_0_1

    51     default "7.0" if GDB_V_7_0

    52     default "6.8" if GDB_V_6_8
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