@@ -258,6 +258,13 @@ ldbl-extra-routines += err \
CFLAGS-ieee128-qefgcvt.c += -mabi=ieeelongdouble -Wno-psabi -mno-gnu-attribute
CFLAGS-ieee128-qefgcvt_r.c += -mabi=ieeelongdouble -Wno-psabi -mno-gnu-attribute
+# Remove -mlong-double-128 because it does not work correctly with
+# -mabi=ibmlongdoule in some GCC versions, e.g. GCC 7.
+$(foreach o,$(all-object-suffixes),$(objpfx)ieee128-qefgcvt$(o)): \
+ sysdep-CFLAGS := $(filter-out -mlong-double-128, $(sysdep-CFLAGS))
+$(foreach o,$(all-object-suffixes),$(objpfx)ieee128-qefgcvt_r$(o)): \
+ sysdep-CFLAGS := $(filter-out -mlong-double-128, $(sysdep-CFLAGS))
+
tests-internal += tst-ibm128-warn tst-ieee128-warn
tests-internal += tst-ibm128-error tst-ieee128-error
tests-internal += tst-ibm128-efgcvt tst-ieee128-efgcvt
@@ -334,5 +341,17 @@ ldbl-ibm128-files := $(objpfx)test-%-ibm128^ \
$(foreach r,$(ldbl-extra-routines),$(objpfx)$(r)^) \
$(foreach r,$(ldbl-extra-routines),$(objpfx)$(r)-internal^)
obj-suf-foreach = $(foreach suf,$(all-object-suffixes),$(subst ^,$(suf),$(1)))
+
+# Remove -mlong-double-128 because it does not work correctly with
+# -mabi=ibmlongdoule in some GCC versions, e.g. GCC 7.
+$(call obj-suf-foreach,$(ldbl-ibm128-files)): \
+ sysdep-CFLAGS := $(filter-out -mlong-double-128, $(sysdep-CFLAGS))
+
+# Removing -mabi=ieeelongdouble is not required, but helps when
+# analyzing the flags that were passed to the compiler.
+$(call obj-suf-foreach,$(ldbl-ibm128-files)): \
+ sysdep-CFLAGS := $(filter-out -mabi=ieeelongdouble, $(sysdep-CFLAGS))
+
+# Explicitly add -mabi=ibm-long-double to required files.
$(call obj-suf-foreach,$(ldbl-ibm128-files)): \
sysdep-CFLAGS += -mabi=ibmlongdouble
From: "Gabriel F. T. Gomes" <gabrielftg@linux.ibm.com> Some compiler versions, e.g. GCC 7, complain when -mlong-double-128 is used together with -mabi=ibmlongdouble or -mabi=ieeelongdouble, producing the following error message: cc1: error: ‘-mabi=ibmlongdouble’ requires ‘-mlong-double-128’ This patch removes -mlong-double-128 from the compilation lines that explicitly request -mabi=*longdouble. Tested for powerpc64le. --- sysdeps/ieee754/ldbl-128ibm-compat/Makefile | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)