[Ada] Map gnatlib-shared to gnatlib-shared-dual for aarch64-vx7r2

This is an incremental change towards supporting shared libraries
for VxWorks on aarch64.

The aarch64-vx7r2 compiler supports compilation with -fpic/PIC.  This
change adds aarch64 to the list of CPUs for which GNATLIB_SHARED maps to
gnatlib-shared-dual for vxworks7r2, so "make gnatlib-shared" actually
builds a shared lib.

While other adjustments will be needed to get the runtime tests to pass,
this one is a necessary step and doesn't impair the rest.

gcc/ada/

	* Makefile.rtl: Add aarch64 to the list of CPUs for which
	GNATLIB_SHARED maps to gnatlib-shared-dual for vxworks7r2.

diff --git a/gcc/ada/Makefile.rtl b/gcc/ada/Makefile.rtl
index 0394d96..db9acc3 100644 (file)
--- a/gcc/ada/Makefile.rtl
+++ b/gcc/ada/Makefile.rtl
@@ -2854,7 +2854,7 @@ endif
 
 # Turn on shared gnatlib for specific vx7r2 targets for RTP runtimes. Once
 # all targets are ported the target_cpu selector can be removed.
-ifeq ($(strip $(filter-out vxworks7r2 powerpc64 x86_64 rtp rtp-smp, $(target_os) $(target_cpu) $(THREAD_KIND))),)
+ifeq ($(strip $(filter-out vxworks7r2 powerpc64 x86_64 aarch64 rtp rtp-smp, $(target_os) $(target_cpu) $(THREAD_KIND))),)
     GNATLIB_SHARED = gnatlib-shared-dual
     LIBRARY_VERSION := $(LIB_VERSION)
 endif