patches/gcc/4.2.1/801-softfloat-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed May 21 22:00:52 2008 +0000 (2008-05-21)
changeset 527 4ac12179ef23
permissions -rw-r--r--
Introduce target-specific LDFLAGS, the same way we have CFLAGS for the target.
It seems to be helping gcc somewhat into telling the correct endianness to ld that sticks with little endian even when the target is big (eg armeb-unknown-linux-uclibcgnueabi).
There's still work to do, especially finish the gcc part that is not in this commit.

/trunk/scripts/functions | 9 7 2 0 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
     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