patches/gcc/4.2.0/250-softfloat-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Fri Aug 19 00:52:05 2011 +0200 (2011-08-19)
branch1.12
changeset 2633 22e779b0a4ed
parent 262 30b65aecf7fb
permissions -rw-r--r--
scripts: simplify and fix the toolchain config script

The script that is installed, and which sole purpose is to dump
the .config that was used to build the toolchain, is pure insanity.

Let's make it much, much more simpler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 814ea73df7e0fab3db1cbe7623932714359c732b)
     1 This patch (C) 2007 Yann E. MORIN
     2 Licensed under GPL v2.
     3 
     4 First hunk of this patch solves compiling uClibc:
     5 
     6 make[1]: Entering directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
     7   LD libuClibc-0.9.29.so
     8 libc/libc_so.a(difftime.os): In function `difftime':
     9 difftime.c:(.text+0x8): undefined reference to `__floatsidf'
    10 difftime.c:(.text+0x2c): undefined reference to `__subdf3'
    11 libc/libc_so.a(_fpmaxtostr.os): In function `_fpmaxtostr':
    12 _fpmaxtostr.c:(.text+0xd4): undefined reference to `__nedf2'
    13 _fpmaxtostr.c:(.text+0xf8): undefined reference to `__eqdf2'
    14 _fpmaxtostr.c:(.text+0x114): undefined reference to `__divdf3'
    15 _fpmaxtostr.c:(.text+0x120): undefined reference to `__ltdf2'
    16 _fpmaxtostr.c:(.text+0x1c4): undefined reference to `__muldf3'
    17 _fpmaxtostr.c:(.text+0x388): undefined reference to `__gedf2'
    18 _fpmaxtostr.c:(.text+0x430): undefined reference to `__adddf3'
    19 libc/libc_so.a(__psfs_do_numeric.os): In function `__psfs_do_numeric':
    20 __psfs_do_numeric.c:(.text+0x520): undefined reference to `__truncdfsf2'
    21 libc/libc_so.a(strtof.os): In function `strtof':
    22 strtof.c:(.text+0x1c): undefined reference to `__extendsfdf2'
    23 /home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/cc_core_prefix/lib/gcc/arm-linux-uclibc/4.1.1/libgcc.a(_fixunsdfsi.o):
    24 In function `__fixunsdfsi':
    25 libgcc2.c:(.text+0x34): undefined reference to `__fixdfsi'
    26 make[2]: *** [lib/libc.so] Error 1
    27 make[1]: *** [lib/libc.so.0] Error 2
    28 make[1]: Leaving directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
    29 make: *** [/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc/lib/libc.a]
    30 Error 2
    31 
    32 The second hunk fixes building final gcc because soft-float implies using -lfloat (which we don't have).
    33 
    34 
    35 diff -dur gcc-4.2.0.orig/gcc/config.gcc gcc-4.2.0/gcc/config.gcc
    36 --- gcc-4.2.0.orig/gcc/config.gcc	2007-07-15 11:24:18.000000000 +0200
    37 +++ gcc-4.2.0/gcc/config.gcc	2007-07-15 11:26:02.000000000 +0200
    38 @@ -721,7 +721,7 @@
    39  	    default_use_cxa_atexit=yes
    40  	    ;;
    41  	*)
    42 -	    tmake_file="$tmake_file arm/t-linux"
    43 +	    tmake_file="$tmake_file arm/t-linux arm/t-arm-elf"
    44  	    ;;
    45  	esac
    46  	tm_file="$tm_file arm/aout.h arm/arm.h"
    47 diff -dur gcc-4.2.0.orig/gcc/config/arm/linux-elf.h gcc-4.2.0/gcc/config/arm/linux-elf.h
    48 --- gcc-4.2.0.orig/gcc/config/arm/linux-elf.h	2007-07-15 11:24:18.000000000 +0200
    49 +++ gcc-4.2.0/gcc/config/arm/linux-elf.h	2007-07-15 11:26:02.000000000 +0200
    50 @@ -63,7 +63,7 @@
    51     %{shared:-lc} \
    52     %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
    53  
    54 -#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
    55 +#define LIBGCC_SPEC "-lgcc"
    56  
    57  #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
    58