[PATCH 6/7] ldbl-128ibm: Let long double files have specific compiler flags

["Paul E. Murphy" <murphyp@linux.vnet.ibm.com>]

From: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>

Soon, powerpc64le will need to provide extra compiler flags to the long
double files in order to continue to build using the IBM 128-bit
extended floating point type as long double.
---
 sysdeps/ieee754/ldbl-128ibm/Makefile | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/sysdeps/ieee754/ldbl-128ibm/Makefile b/sysdeps/ieee754/ldbl-128ibm/Makefile
index bdba6cc6b5..c38d4f6ac2 100644
--- a/sysdeps/ieee754/ldbl-128ibm/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm/Makefile
@@ -9,8 +9,24 @@ tests += tst-strtold-ldbl-128ibm
 $(objpfx)tst-strtold-ldbl-128ibm: $(libm)
 endif
 
+ldbl-tests = test-fmodl-ldbl-128ibm test-remainderl-ldbl-128ibm \
+	     test-remquol-ldbl-128ibm test-canonical-ldbl-128ibm \
+	     test-totalorderl-ldbl-128ibm
+
 ifeq ($(subdir),math)
-tests += test-fmodl-ldbl-128ibm test-remainderl-ldbl-128ibm \
-	 test-remquol-ldbl-128ibm test-canonical-ldbl-128ibm \
-	 test-totalorderl-ldbl-128ibm
+tests += $(ldbl-tests)
 endif
+
+# Long double files may need extra CFLAGS.
+ldbl-128ibm-routines = s_nexttoward s_nexttowardf \
+		       $(type-ldouble-routines) \
+		       $(subst F,$(type-ldouble-suffix),$(libm-compat-calls)) \
+		       $(subst F,$(type-ldouble-suffix),$(libm-calls)) \
+		       $(subst F,$(type-ldouble-suffix),$(calls)) \
+		       $(foreach f,$(libm-narrow-fns), \
+				 $(subst F,$(f), \
+					 $(libm-narrow-types-ldouble-yes)))
+$(foreach suf,$(all-object-suffixes), \
+	  $(foreach r,$(ldbl-128ibm-routines) $(ldbl-tests), \
+		    $(objpfx)$(r)$(suf))): \
+  CFLAGS += $(type-ldouble-CFLAGS)
-- 
2.21.1