--- gcc-6.4.0/gcc/ada/gcc-interface/Makefile.in.orig
+++ gcc-6.4.0/gcc/ada/gcc-interface/Makefile.in
@@ -2042,13 +2042,8 @@
   system.ads<system-linux-x86_64.ads
   ## ^^ Note the above is a pretty-close placeholder.
 
-  ifneq (,$(or $(filter aarch64-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
-    LIBGNAT_TARGET_PAIRS = \
-    $(LIBGNAT_TARGET_PAIRS_COMMON) $(LIBGNAT_TARGET_PAIRS_32)
-  endif
 
   TOOLS_TARGET_PAIRS =  \
     mlib-tgt-specific.adb<mlib-tgt-specific-linux.adb \
