endif
endif
+# x86_64-pc-gnu i.e. GNU Hurd
+ifeq ($(SELECTED_PAIRS),PAIRS_NONE)
+ifeq ($(strip $(filter-out x86_64 pc gnu,$(target_cpu) $(target_vendor) $(target_os))),)
+
+ SELECTED_PAIRS=x86_64-gnuhurd
+
+ LIBGNAT_TARGET_PAIRS = \
+ a-intnam.ads<libgnarl/a-intnam__bsd.ads \
+ s-inmaop.adb<libgnarl/s-inmaop__posix.adb \
+ s-intman.adb<libgnarl/s-intman__posix.adb \
+ s-osinte.adb<libgnarl/s-osinte__gnu.adb \
+ s-osinte.ads<libgnarl/s-osinte__gnu.ads \
+ s-oslock.ads<libgnat/s-oslock__posix.ads \
+ s-osprim.adb<libgnat/s-osprim__posix.adb \
+ s-taprop.adb<libgnarl/s-taprop__posix.adb \
+ s-taspri.ads<libgnarl/s-taspri__posix.ads \
+ s-tpopsp.adb<libgnarl/s-tpopsp__posix-foreign.adb \
+ $(TRASYM_DWARF_UNIX_PAIRS) \
+ $(ATOMICS_TARGET_PAIRS) \
+ $(X86_64_TARGET_PAIRS) \
+ $(GNATRTL_128BIT_PAIRS) \
+ system.ads<libgnat/system-gnu.ads
+
+ EXTRA_GNATRTL_NONTASKING_OBJS += $(GNATRTL_128BIT_OBJS)
+ EXTRA_GNATRTL_NONTASKING_OBJS += $(TRASYM_DWARF_UNIX_OBJS)
+
+ TOOLS_TARGET_PAIRS = indepsw.adb<indepsw-gnu.adb
+
+ EH_MECHANISM=-gcc
+ THREADSLIB = -lpthread
+ GNATLIB_SHARED = gnatlib-shared-dual
+ GMEM_LIB = gmemlib
+ LIBRARY_VERSION := $(LIB_VERSION)
+endif
+endif
+
# aarch64 FreeBSD
ifeq ($(SELECTED_PAIRS),PAIRS_NONE)
ifeq ($(strip $(filter-out %aarch64 freebsd%,$(target_cpu) $(target_os))),)