Makeconfig: sandwich gnulib-tests between libc/ld linking of tests

This better resembles the default linking process with the gnulibs,
and also resolves the increasingly difficult to maintain
f128-loader-link usage on powerpc64le as some libgcc symbols are
dependent on those found in the loader (ld).

Makeconfig

@@ -564,13 +564,13 @@ else
 link-libc-tests-rpath-link = $(link-libc-rpath-link)
 endif  # build-hardcoded-path-in-tests
 
-link-libc-before-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
-			  $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
-			  -Wl,--as-needed $(elf-objpfx)ld.so \
-			  -Wl,--no-as-needed
-link-libc = $(link-libc-before-gnulib) $(gnulib)
+link-libc-between-gnulib = $(common-objpfx)libc.so$(libc.so-version) \
+			   $(common-objpfx)$(patsubst %,$(libtype.oS),c) \
+			   -Wl,--as-needed $(elf-objpfx)ld.so \
+			   -Wl,--no-as-needed
+link-libc = $(link-libc-between-gnulib) $(gnulib)
 
-link-libc-tests-after-rpath-link = $(link-libc-before-gnulib) $(gnulib-tests)
+link-libc-tests-after-rpath-link = $(gnulib-tests) $(link-libc-between-gnulib) $(gnulib-tests)
 link-libc-tests = $(link-libc-tests-rpath-link) \
 		  $(link-libc-tests-after-rpath-link)
 # Pretty printer test programs always require rpath instead of rpath-link.

sysdeps/ieee754/ldbl-128ibm-compat/Makefile

@@ -30,7 +30,6 @@ tests-internal += test-wcstold-ibm128 test-wcstold-ieee128
 CFLAGS-test-wcstold-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
 CFLAGS-test-wcstold-ibm128.c += -mabi=ibmlongdouble -Wno-psabi
 
-$(objpfx)test-wcstold-ieee128: gnulib-tests += $(f128-loader-link)
 endif
 
 ifeq ($(subdir),stdio-common)
@@ -89,26 +88,18 @@ tests-internal += test-scanf-ieee128 test-scanf-ibm128
 CFLAGS-test-scanf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi -std=c89 -D_GNU_SOURCE
 CFLAGS-test-scanf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi -std=c89 -D_GNU_SOURCE
 
-$(objpfx)test-scanf-ieee128: gnulib-tests += $(f128-loader-link)
-
 tests-internal += test-wscanf-ieee128 test-wscanf-ibm128
 CFLAGS-test-wscanf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi -std=c89 -D_GNU_SOURCE
 CFLAGS-test-wscanf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi -std=c89 -D_GNU_SOURCE
 
-$(objpfx)test-wscanf-ieee128: gnulib-tests += $(f128-loader-link)
-
 tests-internal += test-isoc99-scanf-ieee128 test-isoc99-scanf-ibm128
 CFLAGS-test-isoc99-scanf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi -std=c99
 CFLAGS-test-isoc99-scanf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi -std=c99
 
-$(objpfx)test-isoc99-scanf-ieee128: gnulib-tests += $(f128-loader-link)
-
 tests-internal += test-isoc99-wscanf-ieee128 test-isoc99-wscanf-ibm128
 CFLAGS-test-isoc99-wscanf-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi -std=c99
 CFLAGS-test-isoc99-wscanf-ibm128.c += -mabi=ibmlongdouble -Wno-psabi -std=c99
 
-$(objpfx)test-isoc99-wscanf-ieee128: gnulib-tests += $(f128-loader-link)
-
 ifeq ($(run-built-tests),yes)
 tests-special += $(objpfx)test-scanf-ieee128.out
 tests-special += $(objpfx)test-scanf-ibm128.out
@@ -269,9 +260,6 @@ tests-internal += tst-ibm128-warn tst-ieee128-warn
 tests-internal += tst-ibm128-error tst-ieee128-error
 tests-internal += tst-ibm128-efgcvt tst-ieee128-efgcvt
 
-$(objpfx)tst-ieee128-efgcvt: gnulib-tests += $(f128-loader-link)
-$(objpfx)tst-ldbl-efgcvt: gnulib-tests += $(f128-loader-link)
-
 $(objpfx)tst-ibm128-%.c: tst-ldbl-%.c
 	cp $< $@
 
@@ -316,7 +304,6 @@ tests-internal += test-strfrom-ibm128 test-strfrom-ieee128
 CFLAGS-test-strfrom-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
 CFLAGS-test-strfrom-ibm128.c += -mabi=ibmlongdouble -Wno-psabi
 
-$(objpfx)test-strfrom-ieee128: gnulib-tests += $(f128-loader-link)
 endif
 
 ifeq ($(subdir),math)

sysdeps/powerpc/powerpc64/le/Makefile

@@ -1,11 +1,6 @@
 # When building float128 we need to ensure -mfloat128 is
 # passed to all such object files.
 
-# libgcc requires __tcb_parse_hwcap_and_convert_at_platform when built with
-# a binary128 type.  That symbol is provided by the loader on dynamically
-# linked executables, forcing to link the loader after libgcc link.
-f128-loader-link = -Wl,--as-needed $(elf-objpfx)ld.so -Wl,--no-as-needed
-
 # Bootstrapping code for enabling IEEE 128.  This can be removed and
 # any indirections simplified once IEEE 128 long double is enabled.
 type-ldouble-CFLAGS =
@@ -27,19 +22,13 @@ $(foreach suf,$(all-object-suffixes),$(objpfx)test-float64x%$(suf)): CFLAGS += -
 f128-pairs = float32-float64x float32-float128 float64-float64x \
 	     float64-float128 float32x-float64x float32x-float128
 $(foreach suf,$(all-object-suffixes),$(foreach pair,$(f128-pairs),$(objpfx)test-$(pair)%$(suf))): CFLAGS += -mfloat128
+
 CFLAGS-libm-test-support-float128.c += -mfloat128
 CFLAGS-libm-test-support-float64x.c += -mfloat128
 CFLAGS-test-math-iscanonical.cc += -mfloat128
 CFLAGS-test-math-iseqsig.cc += -mfloat128
 CFLAGS-test-math-issignaling.cc += -mfloat128
 CFLAGS-test-math-iszero.cc += -mfloat128
-$(foreach test, \
-	  test-float128% test-float64x% \
-	  $(foreach pair,$(f128-pairs),test-$(pair)%) \
-	  test-math-iscanonical test-math-iseqsig test-math-issignaling \
-	  test-math-iszero, \
-	  $(objpfx)$(test)): \
-  gnulib-tests += $(f128-loader-link)
 
 CFLAGS-s_logbl-power7.c += $(type-ldouble-CFLAGS)
 CFLAGS-s_logbl-ppc64.c += $(type-ldouble-CFLAGS)
@@ -97,11 +86,6 @@ CFLAGS-tst-strfrom-locale.c += -mfloat128
 CFLAGS-strfrom-skeleton.c += -mfloat128
 CFLAGS-tst-strtod-nan-sign.c += -mfloat128
 CFLAGS-tst-wcstod-nan-sign.c += -mfloat128
-$(foreach test,bug-strtod bug-strtod2 bug-strtod2 tst-strtod-round \
-tst-wcstod-round tst-strtod6 tst-strrom tst-strfrom-locale \
-tst-strtod-nan-locale tst-wcstod-nan-locale \
-strfrom-skeleton tst-strtod-nan-sign tst-wcstod-nan-sign, \
-$(objpfx)$(test)): gnulib-tests += $(f128-loader-link)
 
 # When building glibc with support for _Float128, the powers of ten tables in
 # fpioconst.c and in the string conversion functions must be extended.  Some