diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 331b81dfba7..fe3f63e348f 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,8 @@
+2015-11-28  Matthias Klose  <doko@ubuntu.com>
+
+	PR ada/68564
+	* gcc-interface/Makefile.in: Fix sparc/sparc64 bitness detection.
+
 2015-11-25  Arnaud Charlet  <charlet@adacore.com>
 
 	* lib-xref-spark_specific.adb
diff --git a/gcc/ada/gcc-interface/Makefile.in b/gcc/ada/gcc-interface/Makefile.in
index d217a790e7b..d6a8c8f09da 100644
--- a/gcc/ada/gcc-interface/Makefile.in
+++ b/gcc/ada/gcc-interface/Makefile.in
@@ -2092,7 +2092,7 @@ ifeq ($(strip $(filter-out sparc% linux%,$(target_cpu) $(target_os))),)
   LIBGNAT_TARGET_PAIRS_64 = \
   system.ads<system-linux-sparcv9.ads
 
-  ifeq ($(strip $(shell $(GCC_FOR_TARGET) $(GNATLIBCFLAGS) -print-multi-os-directory)),../lib64)
+  ifneq (,$(or $(filter sparc64-linux-gnu, $(shell $(GCC_FOR_TARGET) $(GNATLIBCFLAGS) -print-multiarch)), $(filter ../lib64, $(shell $(GCC_FOR_TARGET) $(GNATLIBCFLAGS) -print-multi-os-directory))))
     LIBGNAT_TARGET_PAIRS = \
     $(LIBGNAT_TARGET_PAIRS_COMMON) $(LIBGNAT_TARGET_PAIRS_64)
   else