From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romain Naour Date: Sat, 23 Sep 2017 23:24:03 +0200 Subject: [Buildroot] [PATCH v3 4/7] package/gcc: enable float128 on powerpc64le with glibc >= 2.26 toolchains In-Reply-To: <20170923212414.16744-1-romain.naour@gmail.com> References: <20170923212414.16744-1-romain.naour@gmail.com> Message-ID: <20170923212414.16744-5-romain.naour@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net 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 --- v2: Disable gcc 4.x and 5.x for internal toolchain. --- package/gcc/Config.in.host | 4 ++++ package/gcc/gcc.mk | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host index ec7b692..0926560 100644 --- a/package/gcc/Config.in.host +++ b/package/gcc/Config.in.host @@ -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 diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk index 49ccccf..54ef70c 100644 --- a/package/gcc/gcc.mk +++ b/package/gcc/gcc.mk @@ -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)),) -- 2.9.5