[Buildroot] [PATCH 02/10] ext-toolchain: Fix ARCH_SYSROOT detection

[Yann E. MORIN]

On Monday 05 July 2010 18:58:55 Thomas Petazzoni wrote:
> For the detection of the ARCH_SYSROOT_DIR (which contains the C
> library variant specific to the compiler flags), we used to pass only
> the -march argument instead of the full TARGET_CFLAGS. This was done
> because TARGET_CFLAGS contains --sysroot, and we don't want to tell
> here the compiler which sysroot to use, because we're specifically
> asking the compiler where the *normal* arch sysroot directory is.
> 
> Unfortunately, there are some multilib variants that aren't decided
> only based on -march, but also on -msoft-float or other compiler
> flags. Therefore, we take the opposite approach: pass the full
> TARGET_CFLAGS, from which we have stripped the --sysroot option.
> 
> For example, this allows a PowerPC CodeSourcery toolchain, on which
> we're using the soft-float multilib variant, to work properly as an
> external toolchain.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998 at anciens.enib.fr>

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