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patches/gcc/4.3.1/130-cross-compile.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Sep 09 00:02:01 2009 +0200 (2009-09-09)
changeset 1525 4647e6fb994a
parent 746 b150d6f590fc
permissions -rw-r--r--
gcc: add patch to fix EABI for armv4t

As pointed out by Martin GUY, gcc incorrectly generates armv5t
instrcutions for EABI, even for cores that are an armv4t.
The new patch (for the 4.3 series) fixes the problem by downgrading
the default CPU for EABI to being an armv4t core. 
     1 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/08_all_gcc-4.1-cross-compile.patch

     2 Some notes on the 'bootstrap with or without libc headers' debate:

     3 http://linuxfromscratch.org/pipermail/lfs-dev/2005-July/052409.html

     4 http://gcc.gnu.org/ml/gcc/2005-07/msg01195.html

     5 

     6 diff -durN gcc-4.3.1.orig/gcc/configure gcc-4.3.1/gcc/configure

     7 --- gcc-4.3.1.orig/gcc/configure	2008-05-21 10:54:15.000000000 +0200

     8 +++ gcc-4.3.1/gcc/configure	2008-06-10 14:57:42.000000000 +0200

     9 @@ -13283,7 +13283,7 @@

    10  	    | powerpc*-*-*,powerpc64*-*-*)

    11  		CROSS="$CROSS -DNATIVE_CROSS" ;;

    12  	esac

    13 -elif test "x$TARGET_SYSTEM_ROOT" != x; then

    14 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then

    15          SYSTEM_HEADER_DIR=$build_system_header_dir

    16  fi

    17  

    18 diff -durN gcc-4.3.1.orig/gcc/configure.ac gcc-4.3.1/gcc/configure.ac

    19 --- gcc-4.3.1.orig/gcc/configure.ac	2008-05-21 10:54:15.000000000 +0200

    20 +++ gcc-4.3.1/gcc/configure.ac	2008-06-10 14:57:42.000000000 +0200

    21 @@ -1749,7 +1749,7 @@

    22  	    | powerpc*-*-*,powerpc64*-*-*)

    23  		CROSS="$CROSS -DNATIVE_CROSS" ;;

    24  	esac

    25 -elif test "x$TARGET_SYSTEM_ROOT" != x; then

    26 +elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then

    27          SYSTEM_HEADER_DIR=$build_system_header_dir 

    28  fi

    29  

    30 diff -durN gcc-4.3.1.orig/gcc/unwind-dw2.c gcc-4.3.1/gcc/unwind-dw2.c

    31 --- gcc-4.3.1.orig/gcc/unwind-dw2.c	2007-07-25 20:14:57.000000000 +0200

    32 +++ gcc-4.3.1/gcc/unwind-dw2.c	2008-06-10 14:57:42.000000000 +0200

    33 @@ -334,9 +334,11 @@

    34  }

    35  #endif

    36  

    37 +#ifndef inhibit_libc

    38  #ifdef MD_UNWIND_SUPPORT

    39  #include MD_UNWIND_SUPPORT

    40  #endif

    41 +#endif

    42  

    43  /* Extract any interesting information from the CIE for the translation

    44     unit F belongs to.  Return a pointer to the byte after the augmentation,
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