[glibc] ldbl-128ibm-compat: Reuse tests for err.h and error.h functions

[Gabriel F.T.Gomes <gftg at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ff3cb5accb80471df69fac2c0dded9cab794220a

commit ff3cb5accb80471df69fac2c0dded9cab794220a
Author: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
Date:   Thu Jul 11 11:47:39 2019 -0300

    ldbl-128ibm-compat: Reuse tests for err.h and error.h functions
    
    Commit IDs 9771e6cb5102 and 7597b0c7f711 added tests for the functions
    from err.h and error.h that can take long double parameters.
    Afterwards, commit ID f0eaf8627654 reused them on architectures that
    changed the long double format from the same as double to something else
    (i.e.: architectures that imply ldbl-opt).  This patch reuses it again
    for IEEE long double on powerpc64le.
    
    Tested for powerpc64le.
    
    Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>

Diff:
---
 sysdeps/ieee754/ldbl-128ibm-compat/Makefile | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
index a09209a..ed0e2ec 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
@@ -177,6 +177,21 @@ endif
 ifeq ($(subdir),misc)
 ldbl-extra-routines += err \
 		       error
+
+tests-internal += tst-ibm128-warn tst-ieee128-warn
+tests-internal += tst-ibm128-error tst-ieee128-error
+
+$(objpfx)tst-ibm128-%.c: tst-ldbl-%.c
+	cp $< $@
+
+$(objpfx)tst-ieee128-%.c: tst-ldbl-%.c
+	cp $< $@
+
+CFLAGS-tst-ibm128-warn.c += -mabi=ibmlongdouble -Wno-psabi
+CFLAGS-tst-ibm128-error.c += -mabi=ibmlongdouble -Wno-psabi
+
+CFLAGS-tst-ieee128-warn.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
+CFLAGS-tst-ieee128-error.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
 endif
 
 # Add IEEE binary128 files as make targets.