From: "Paul E. Murphy" <murphyp@linux.vnet.ibm.com>
To: libc-alpha@sourceware.org
Subject: [PATCH v2 05/10] powerpc64le: workaround ieee long double / _Float128 stdc++ bug
Date: Fri, 27 Mar 2020 16:17:56 -0500 [thread overview]
Message-ID: <20200327211801.31234-6-murphyp@linux.vnet.ibm.com> (raw)
In-Reply-To: <20200327211801.31234-1-murphyp@linux.vnet.ibm.com>
-mabi=ieeelongdouble triggers the stdc++ libraries _Float128
support, which then breaks if algorithm is included. For now,
explicitly disable _Float128 for such tests.
I have opened up GCC BZ 94080 to track this.
---
sysdeps/powerpc/powerpc64/le/Makefile | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/sysdeps/powerpc/powerpc64/le/Makefile b/sysdeps/powerpc/powerpc64/le/Makefile
index 441a8a14e5..9ba7f850ad 100644
--- a/sysdeps/powerpc/powerpc64/le/Makefile
+++ b/sysdeps/powerpc/powerpc64/le/Makefile
@@ -140,3 +140,14 @@ $(foreach suf,$(all-object-suffixes), $(ldbl-ibm128-files)) \
$(foreach r,$(ldbl-128ibm-routines) $(ldbl-tests), \
$(objpfx)$(r)$(suf)): \
sysdep-CFLAGS := $(filter-out -mabi=ieeelongdouble,$(sysdep-CFLAGS))
+
+# TODO: a bug in stdc++ will fail if -mabi=ieeelongdouble and -mfloat128
+# are both enabled. The latter is enabled by default in GCC 8+. This is
+# tracked via GCC BZ 94080.
+ifeq ($(subdir),support)
+CFLAGS-links-dso-program.cc += -mno-float128
+endif
+ifeq ($(subdir),nptl)
+CFLAGS-tst-thread_local1.cc += -mno-float128
+CFLAGS-tst-minstack-throw.cc += -mno-float128
+endif
--
2.21.1
next prev parent reply other threads:[~2020-03-27 21:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 21:17 [PATCH v2 00/10] IEEE binary128 long double on powerpc64le Paul E. Murphy
2020-03-27 21:17 ` [PATCH v2 01/10] ldbl-128ibm-compat: workaround C++ redirect limitations Paul E. Murphy
2020-03-27 21:34 ` Joseph Myers
2020-04-01 20:29 ` Paul E Murphy
2020-04-01 20:41 ` DJ Delorie
2020-04-01 23:07 ` Joseph Myers
2020-04-02 16:48 ` Paul E Murphy
2020-03-27 21:17 ` [PATCH v2 02/10] ldbl-128ibm: simplify iscanonical.h Paul E. Murphy
2020-04-03 20:12 ` Tulio Magno Quites Machado Filho
2020-04-06 16:46 ` Paul E Murphy
2020-03-27 21:17 ` [PATCH v2 03/10] Rename __LONG_DOUBLE_USES_FLOAT128 to Paul E. Murphy
2020-04-03 19:22 ` Tulio Magno Quites Machado Filho
2020-03-27 21:17 ` [PATCH v2 04/10] powerpc64le: Enforce -mabi=ibmlongdouble when -mfloat128 used Paul E. Murphy
2020-04-03 19:29 ` Tulio Magno Quites Machado Filho
2020-04-06 16:49 ` Paul E Murphy
2020-03-27 21:17 ` Paul E. Murphy [this message]
2020-04-03 19:03 ` [PATCH v2 05/10] powerpc64le: workaround ieee long double / _Float128 stdc++ bug Tulio Magno Quites Machado Filho
2020-03-27 21:17 ` [PATCH v2 06/10] powerpc64le: raise GCC requirement to 7.3 for long double transition Paul E. Murphy
2020-03-31 20:47 ` Paul E Murphy
2020-03-27 21:17 ` [PATCH v2 07/10] powerpc64le: bump binutils version requirement to >= 2.26 Paul E. Murphy
2020-04-03 19:36 ` Tulio Magno Quites Machado Filho
2020-03-27 21:17 ` [PATCH v2 08/10] powerpc64le: enforce non-specific long double in .gnu.attributes section Paul E. Murphy
2020-04-03 19:49 ` Tulio Magno Quites Machado Filho
2020-03-27 21:18 ` [PATCH v2 09/10] powerpc64le: blacklist broken GCC compilers (e.g GCC 7.5.0) Paul E. Murphy
2020-04-03 20:38 ` Adhemerval Zanella
2020-04-07 19:57 ` Paul E Murphy
2020-03-27 21:18 ` [PATCH v2 10/10] powerpc64le: Enable support for IEEE long double Paul E. Murphy
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