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arch/mips: add option for toolchains supporting -mnan

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-mnan option was added in gcc-4.9.0 so make sure that users cannot
select the NaN mode when using toolchains that have a gcc older
than 4.9.0, and also make sure that the -mnan option is not passed at
all to the toolchain-wrapper and target cflags.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Vicente Olivert Riera
2017-07-21 18:06:31 +01:00
committed by Thomas Petazzoni
parent 1ddd41f231
commit 0af741187f
3 changed files with 7 additions and 0 deletions
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arch/Config.in.mips
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@@ -169,6 +169,7 @@ config BR2_MIPS_NAN_2008
choice
prompt "Target NaN"
depends on BR2_TOOLCHAIN_HAS_MNAN_OPTION
depends on BR2_mips_32r5 || BR2_mips_64r5
default BR2_MIPS_ENABLE_NAN_2008
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