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package/gcc: enable float128 on powerpc64le with glibc >= 2.26 toolchains

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float128 is now required on powerpc64le with glibc >= 2.26 toolchains.

Fixes:
running configure fragment for sysdeps/gnu
running configure fragment for sysdeps/powerpc/powerpc64le
checking if [...]powerpc64le-buildroot-linux-gnu-gcc supports binary128 floating point type... no
checking if the target machine is at least POWER8... yes
configure: error: ***  binary128 floating point type (GCC >= 6.2) is required on powerpc64le.

In order to prepare the glibc bump to this version, we enable
binary128 floating point in gcc. This require at least gcc >= 6.2.

Disable gcc 4.x and 5.x for internal toolchain.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Romain Naour 2017-09-23 23:24:03 +02:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 6e6c82f48d
commit 6c0dd2fb68
2 changed files with 12 additions and 0 deletions
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4
package/gcc/Config.in.host
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@ -39,6 +39,8 @@ config BR2_GCC_VERSION_4_9_X
depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_powerpc64 || BR2_powerpc64le))
# musl mips64 unsupported
depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))
# glibc >= 2.26 needs gcc >= 6.2
depends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)
select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
config BR2_GCC_VERSION_5_X
@ -53,6 +55,8 @@ config BR2_GCC_VERSION_5_X
depends on !BR2_mips_interaptiv && !BR2_mips_m5150 && !BR2_mips_i6400
# musl mips64 unsupported
depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))
# glibc >= 2.26 needs gcc >= 6.2
depends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)
select BR2_TOOLCHAIN_GCC_AT_LEAST_5
config BR2_GCC_VERSION_6_X

8
package/gcc/gcc.mk
View File

@ -254,6 +254,14 @@ HOST_GCC_COMMON_CONF_OPTS += \
--without-long-double-128
endif
# Since glibc >= 2.26, poerpc64le requires double/long double which
# requires at least gcc 6.2.
# See sysdeps/powerpc/powerpc64le/configure.ac
ifeq ($(BR2_TOOLCHAIN_USES_GLIBC)$(BR2_TOOLCHAIN_GCC_AT_LEAST_6)$(BR2_powerpc64le),yyy)
HOST_GCC_COMMON_CONF_OPTS += \
--with-long-double-128
endif
HOST_GCC_COMMON_TOOLCHAIN_WRAPPER_ARGS += -DBR_CROSS_PATH_SUFFIX='".br_real"'
ifeq ($(BR2_GCC_ARCH_HAS_CONFIGURABLE_DEFAULTS),)
ifeq ($(call qstrip,$(BR2_GCC_TARGET_CPU_REVISION)),)