5 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/Implies b/sysdeps/unix/sysv/linux/s390/Implies
new file mode 100644
index 0000000000..efda9d27c0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/Implies
@@ -0,0 +1,3 @@
+# These supply the ABI compatibility for when long double was double.
+ieee754/ldbl-64-128
+ieee754/ldbl-opt
diff --git a/sysdeps/unix/sysv/linux/s390/fpu/Implies b/sysdeps/unix/sysv/linux/s390/fpu/Implies
new file mode 100644
index 0000000000..3a8e225986
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/fpu/Implies
@@ -0,0 +1,2 @@
+# Override ldbl-opt with s390 specific routines.
+s390/fpu
diff --git a/sysdeps/unix/sysv/linux/s390/nldbl-abi.h b/sysdeps/unix/sysv/linux/s390/nldbl-abi.h
new file mode 100644
index 0000000000..bd985cc59c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/nldbl-abi.h
@@ -0,0 +1,8 @@
+/* ABI version for long double switch.
+   This is used by the Versions and math_ldbl_opt.h files in
+   sysdeps/ieee754/ldbl-opt/.  It gives the ABI version where
+   long double == double was replaced with proper long double
+   for libm *l functions and libc functions using long double.  */
+
+#define NLDBL_VERSION			GLIBC_2.4
+#define LONG_DOUBLE_COMPAT_VERSION	GLIBC_2_4
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile b/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
index e051f54637..cd1b3fb793 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
@@ -9,3 +9,13 @@ CFLAGS-rtld.c += -mcpu=v8
 sysdep-others += lddlibc4
 install-bin += lddlibc4
 endif   # elf
+
+ifeq ($(subdir),math)
+# These 2 routines are normally in libgcc{.a,_s.so.1}.
+# However, sparc32 -mlong-double-128 libgcc relies on
+# glibc providing _Q_* routines and without these files
+# glibc relies on __multc3/__divtc3 only provided
+# by libgcc if configured with -mlong-double-128.
+# Provide these routines here as well.
+libm-routines += multc3 divtc3
+endif   # math
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/fpu/Implies b/sysdeps/unix/sysv/linux/sparc/sparc32/fpu/Implies
new file mode 100644
index 0000000000..dbcd1e9e6f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/fpu/Implies
@@ -0,0 +1,2 @@
+# We must list this here to move it ahead of the ldbl-opt code.
+sparc/sparc32/fpu