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 By Lennert Buytenhek <buytenh@wantstofly.org>
2 Adds support for arm*b-linux* big-endian ARM targets
4 See http://gcc.gnu.org/PR16350
6 --- gcc-4.1.0/gcc/config/arm/linux-elf.h
7 +++ gcc-4.1.0/gcc/config/arm/linux-elf.h
10 #define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
13 + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
14 + * (big endian) configurations.
16 +#if TARGET_BIG_ENDIAN_DEFAULT
17 +#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
18 +#define TARGET_ENDIAN_OPTION "mbig-endian"
19 +#define TARGET_LINKER_EMULATION "armelfb_linux"
21 +#define TARGET_ENDIAN_DEFAULT 0
22 +#define TARGET_ENDIAN_OPTION "mlittle-endian"
23 +#define TARGET_LINKER_EMULATION "armelf_linux"
26 #undef TARGET_DEFAULT_FLOAT_ABI
27 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
30 -#define TARGET_DEFAULT (0)
31 +#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
33 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
35 -#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
36 +#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
38 #undef MULTILIB_DEFAULTS
39 #define MULTILIB_DEFAULTS \
40 - { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
41 + { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
43 /* Now we define the strings used to build the spec file. */
46 %{rdynamic:-export-dynamic} \
47 %{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
49 - %{mbig-endian:-EB}" \
50 + %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
51 SUBTARGET_EXTRA_LINK_SPEC
54 --- gcc-4.1.0/gcc/config.gcc
55 +++ gcc-4.1.0/gcc/config.gcc
58 arm*-*-linux*) # ARM GNU/Linux with ELF
59 tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
62 + tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
65 tmake_file="${tmake_file} t-linux arm/t-arm"