patches/gcc/4.3.4/310-arm-softfloat.patch
author "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
Wed Jun 08 15:47:43 2011 +0200 (2011-06-08)
changeset 2508 9e2761e59a75
permissions -rw-r--r--
debug/cross-gdb: check host dependencies

Cross-gdb depends on expat and python. If either is missing, cross-gdb will
build successfully, but lacking some features.

Especially, if expat is missing, cross-gdb will be unable to parse the target
description, which may lead to runtime malfunctions and the following GDB
warning:
"Can not parse XML target description; XML support was disabled at compile time"

Hence, expat should be considered mandatory.

On the other hand, the features missing without python are not critical, so
python should not be considered mandatory.

This patch does the following:
- At configure time, warn the user if either expat or python is missing.
- In menuconfig, disable the static build options regarding cross-gdb if no
static version of expat is available, and disable cross-gdb if expat is
missing.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
[yann.morin.1998@anciens.enib.fr: add comment for impossible static cross-gdb]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 Original patch from: ../4.3.2/310-arm-softfloat.patch
     2 
     3 -= BEGIN original header =-
     4 -= END original header =-
     5 
     6 diff -durN gcc-4.3.3.orig/gcc/config/arm/linux-elf.h gcc-4.3.3/gcc/config/arm/linux-elf.h
     7 --- gcc-4.3.3.orig/gcc/config/arm/linux-elf.h	2007-11-08 14:44:09.000000000 +0100
     8 +++ gcc-4.3.3/gcc/config/arm/linux-elf.h	2009-01-27 22:25:47.000000000 +0100
     9 @@ -60,7 +60,7 @@
    10     %{shared:-lc} \
    11     %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
    12  
    13 -#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
    14 +#define LIBGCC_SPEC "-lgcc"
    15  
    16  #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
    17  
    18 diff -durN gcc-4.3.3.orig/gcc/config/arm/t-linux gcc-4.3.3/gcc/config/arm/t-linux
    19 --- gcc-4.3.3.orig/gcc/config/arm/t-linux	2006-11-09 23:14:27.000000000 +0100
    20 +++ gcc-4.3.3/gcc/config/arm/t-linux	2009-01-27 22:25:47.000000000 +0100
    21 @@ -3,7 +3,12 @@
    22  TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fPIC
    23  
    24  LIB1ASMSRC = arm/lib1funcs.asm
    25 -LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx
    26 +LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \
    27 +	_call_via_rX _interwork_call_via_rX \
    28 +	_lshrdi3 _ashrdi3 _ashldi3 \
    29 +	_negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi _fixunsdfsi \
    30 +	_truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \
    31 +	_fixsfsi _fixunssfsi _floatdidf _floatdisf _floatundidf _floatundisf
    32  
    33  # MULTILIB_OPTIONS = mhard-float/msoft-float
    34  # MULTILIB_DIRNAMES = hard-float soft-float