[Buildroot] [PATCH v2 06/11] package/gcc: enable float128 on powerpc64le with glibc >= 2.26 toolchains
Romain Naour
romain.naour at gmail.com
Sat Sep 2 20:54:18 UTC 2017
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 at gmail.com>
---
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
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