crosstool-ng: patches/gcc/4.1.2/110-arm-eabi.patch@ff2181adbd28

cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 --- gcc-4.1.2.orig/gcc/config.gcc	2007-03-04 23:25:37.000000000 +0100

     2 +++ gcc-4.1.2/gcc/config.gcc	2007-03-04 23:25:45.000000000 +0100

     3 @@ -674,7 +674,7 @@

     4  	tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"

     5  	tmake_file="${tmake_file} t-linux arm/t-arm"

     6  	case ${target} in

     7 -	arm*-*-linux-gnueabi)

     8 +	arm*-*-linux-gnueabi | arm*-*-linux-uclibcgnueabi)

     9  	    tm_file="$tm_file arm/bpabi.h arm/linux-eabi.h"

    10  	    tmake_file="$tmake_file arm/t-arm-elf arm/t-bpabi arm/t-linux-eabi"

    11    	    # The BPABI long long divmod functions return a 128-bit value in

    12 --- gcc-4.1.2.orig/gcc/config/arm/linux-eabi.h	2005-11-15 15:32:13.000000000 +0100

    13 +++ gcc-4.1.2/gcc/config/arm/linux-eabi.h	2007-03-04 23:25:45.000000000 +0100

    14 @@ -53,7 +53,11 @@

    15  /* Use ld-linux.so.3 so that it will be possible to run "classic"

    16     GNU/Linux binaries on an EABI system.  */

    17  #undef LINUX_TARGET_INTERPRETER

    18 +#ifdef USE_UCLIBC

    19 +#define LINUX_TARGET_INTERPRETER "/lib/ld-uClibc.so.0"

    20 +#else

    21  #define LINUX_TARGET_INTERPRETER "/lib/ld-linux.so.3"

    22 +#endif

    24  /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to

    25     use the GNU/Linux version, not the generic BPABI version.  */

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123	ff2181adbd28
parent 1	eeea35fbf182
permissions	-rw-r--r--