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toolchain-external: do not allow the user to select hard/soft float

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Commit ba92d6ef68 made hard float the
default when Cortex-A8 and Cortex-A9. The problem it was trying to fix
is that the newer Linaro toolchains (2012.05 and 2012.06) are
hard-float, so the default selection of soft-float enabled on ARM
doesn't work for those toolchains.

Unfortunately, not selecting soft-float causes problems with
the Crosstool-NG backend at the moment.

As an intermediate solution, make the soft float option disappear when
using external toolchain: the toolchain will decide by itself whether
to generate hard float or soft float code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Thomas Petazzoni 2012-08-01 20:04:50 +02:00
parent fdbc2f4059
commit f648ad2817
1 changed files with 4 additions and 1 deletions
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5
toolchain/toolchain-common.in
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@ -101,7 +101,7 @@ config BR2_USE_MMU
config BR2_PREFER_SOFT_FLOAT config BR2_PREFER_SOFT_FLOAT
bool bool
default y if (BR2_arm && !BR2_cortex_a8 && !BR2_cortex_a9) default y if BR2_arm
default y if BR2_armeb default y if BR2_armeb
default y if BR2_avr32 default y if BR2_avr32
default y if BR2_mips default y if BR2_mips
@ -110,6 +110,9 @@ config BR2_PREFER_SOFT_FLOAT
config BR2_SOFT_FLOAT config BR2_SOFT_FLOAT
bool "Use software floating point by default" bool "Use software floating point by default"
depends on BR2_arm || BR2_armeb || BR2_avr32 || BR2_mips || BR2_mipsel || BR2_powerpc depends on BR2_arm || BR2_armeb || BR2_avr32 || BR2_mips || BR2_mipsel || BR2_powerpc
# External toolchains will automatically do soft float or hard
# float depending on their configuration
depends on BR2_TOOLCHAIN_BUILDROOT || BR2_TOOLCHAIN_CTNG
default $(BR2_PREFER_SOFT_FLOAT) default $(BR2_PREFER_SOFT_FLOAT)
help help
If your target CPU does not have a Floating Point Unit (FPU) or a If your target CPU does not have a Floating Point Unit (FPU) or a