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arch: define dependencies for the binfmt flat formats

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The situation looks like following for elf2flt and binfmt FLAT:

 * Only gcc for bfin/m68k implements
   -msep-data (BR2_BINFMT_FLAT_SEP_DATA) and
   -mid-shared-library (BR2_BINFMT_FLAT_SHARED), so the corresponding
   options are made only visible on those architectures.

 * When the default of BR2_BINFMT_FLAT_ONE is used on m68k, broken
   binaries are produced, which mainly end up in SIGILL, so do not use
   it for m68k.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Thomas:
 - also add the dependencies on m68k/bfin to BR2_BINFMT_FLAT_SHARED
 - rework commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Waldemar Brodkorb 2016-07-04 20:51:39 +02:00 committed by Thomas Petazzoni
parent 4b4ed7a7f9
commit 49d97993d8
1 changed files with 3 additions and 0 deletions
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arch/Config.in
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@ -331,17 +331,20 @@ choice
config BR2_BINFMT_FLAT_ONE
bool "One memory region"
depends on !BR2_m68k
help
All segments are linked into one memory region.
config BR2_BINFMT_FLAT_SEP_DATA
bool "Separate data and code region"
depends on BR2_m68k || BR2_bfin
help
Allow for the data and text segments to be separated and placed in
different regions of memory.
config BR2_BINFMT_FLAT_SHARED
bool "Shared binary"
depends on BR2_m68k || BR2_bfin
# Even though this really generates shared binaries, there is no libdl
# and dlopen() cannot be used. So packages that require shared
# libraries cannot be built. Therefore, we don't select