Commit cb30e130 authored by Yann E. MORIN's avatar Yann E. MORIN Committed by Peter Korsgaard
Browse files

toolchain/crosstool-NG: disable decimal floats 



Decimal floats were introduced circa gcc-4.2 or -4.3, and requires
the floating-point environement fenv.h in the C library.

The uClibc .config file used by crosstool-NG to build uClibc is the
same as used by the internal buildroot mechanism, and explcitly
disables fenv support.

The quick workaround is to simply disable decimal floats in all
crosstool-NG config files.

In the long run, it might be better to check this situation, and/or
add code and/or options in crosstool-NG to handle this (but it is
much more involved, and this workaround is sane).

Reported-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatar"Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent 9950d485

toolchain/toolchain-crosstool-ng/crosstool-ng.config-eglibc

+2 −2
Original line number Diff line number Diff line
@@ -294,8 +294,8 @@ CT_CC_LANG_CXX=y 
# gcc other options

#

CT_CC_ENABLE_CXX_FLAGS=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY=""

CT_CC_EXTRA_CONFIG_ARRAY=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_STATIC_LIBSTDCXX=y



#

toolchain/toolchain-crosstool-ng/crosstool-ng.config-glibc

+2 −2
Original line number Diff line number Diff line
@@ -294,8 +294,8 @@ CT_CC_LANG_CXX=y 
# gcc other options

#

CT_CC_ENABLE_CXX_FLAGS=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY=""

CT_CC_EXTRA_CONFIG_ARRAY=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_STATIC_LIBSTDCXX=y



#

toolchain/toolchain-crosstool-ng/crosstool-ng.config-uClibc

+2 −2
Original line number Diff line number Diff line
@@ -293,8 +293,8 @@ CT_CC_LANG_CXX=y 
# gcc other options

#

CT_CC_ENABLE_CXX_FLAGS=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY=""

CT_CC_EXTRA_CONFIG_ARRAY=""

CT_CC_CORE_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_EXTRA_CONFIG_ARRAY="--disable-decimal-float"

CT_CC_STATIC_LIBSTDCXX=y



#