{"id":817835,"url":"http://patchwork.ozlabs.org/api/patches/817835/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/patch/20170923212414.16744-5-romain.naour@gmail.com/","project":{"id":27,"url":"http://patchwork.ozlabs.org/api/projects/27/?format=json","name":"Buildroot development","link_name":"buildroot","list_id":"buildroot.buildroot.org","list_email":"buildroot@buildroot.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170923212414.16744-5-romain.naour@gmail.com>","list_archive_url":null,"date":"2017-09-23T21:24:03","name":"[v3,4/7] package/gcc: enable float128 on powerpc64le with glibc >= 2.26 toolchains","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"0c4a216d046453ed6dae6c187b7eab7ca3436df3","submitter":{"id":67942,"url":"http://patchwork.ozlabs.org/api/people/67942/?format=json","name":"Romain Naour","email":"romain.naour@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/buildroot/patch/20170923212414.16744-5-romain.naour@gmail.com/mbox/","series":[{"id":4786,"url":"http://patchwork.ozlabs.org/api/series/4786/?format=json","web_url":"http://patchwork.ozlabs.org/project/buildroot/list/?series=4786","date":"2017-09-23T21:23:59","name":"glibc: bump to 2.26","version":3,"mbox":"http://patchwork.ozlabs.org/series/4786/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/817835/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/817835/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","buildroot@lists.busybox.net"],"Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","buildroot@osuosl.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=busybox.net\n\t(client-ip=140.211.166.138; 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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"buildroot-bounces@busybox.net","Sender":"\"buildroot\" "},"content":"float128 is now required on powerpc64le with glibc >= 2.26 toolchains.\n\nFixes:\nrunning configure fragment for sysdeps/gnu\nrunning configure fragment for sysdeps/powerpc/powerpc64le\nchecking if [...]powerpc64le-buildroot-linux-gnu-gcc supports binary128 floating point type... no\nchecking if the target machine is at least POWER8... yes\nconfigure: error: *** binary128 floating point type (GCC >= 6.2) is required on powerpc64le.\n\nIn order to prepare the glibc bump to this version, we enable\nbinary128 floating point in gcc. This require at least gcc >= 6.2.\n\nDisable gcc 4.x and 5.x for internal toolchain.\n\nSigned-off-by: Romain Naour \n---\nv2: Disable gcc 4.x and 5.x for internal toolchain.\n---\n package/gcc/Config.in.host | 4 ++++\n package/gcc/gcc.mk | 8 ++++++++\n 2 files changed, 12 insertions(+)","diff":"diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host\nindex ec7b692..0926560 100644\n--- a/package/gcc/Config.in.host\n+++ b/package/gcc/Config.in.host\n@@ -39,6 +39,8 @@ config BR2_GCC_VERSION_4_9_X\n \tdepends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_powerpc64 || BR2_powerpc64le))\n \t# musl mips64 unsupported\n \tdepends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))\n+\t# glibc >= 2.26 needs gcc >= 6.2\n+\tdepends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)\n \tselect BR2_TOOLCHAIN_GCC_AT_LEAST_4_9\n \n config BR2_GCC_VERSION_5_X\n@@ -53,6 +55,8 @@ config BR2_GCC_VERSION_5_X\n \tdepends on !BR2_mips_interaptiv && !BR2_mips_m5150 && !BR2_mips_i6400\n \t# musl mips64 unsupported\n \tdepends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))\n+\t# glibc >= 2.26 needs gcc >= 6.2\n+\tdepends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_powerpc64le)\n \tselect BR2_TOOLCHAIN_GCC_AT_LEAST_5\n \n config BR2_GCC_VERSION_6_X\ndiff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk\nindex 49ccccf..54ef70c 100644\n--- a/package/gcc/gcc.mk\n+++ b/package/gcc/gcc.mk\n@@ -254,6 +254,14 @@ HOST_GCC_COMMON_CONF_OPTS += \\\n \t--without-long-double-128\n endif\n \n+# Since glibc >= 2.26, poerpc64le requires double/long double which\n+# requires at least gcc 6.2.\n+# See sysdeps/powerpc/powerpc64le/configure.ac\n+ifeq ($(BR2_TOOLCHAIN_USES_GLIBC)$(BR2_TOOLCHAIN_GCC_AT_LEAST_6)$(BR2_powerpc64le),yyy)\n+HOST_GCC_COMMON_CONF_OPTS += \\\n+\t--with-long-double-128\n+endif\n+\n HOST_GCC_COMMON_TOOLCHAIN_WRAPPER_ARGS += -DBR_CROSS_PATH_SUFFIX='\".br_real\"'\n ifeq ($(BR2_GCC_ARCH_HAS_CONFIGURABLE_DEFAULTS),)\n ifeq ($(call qstrip,$(BR2_GCC_TARGET_CPU_REVISION)),)\n","prefixes":["v3","4/7"]}