t-vxworks7: New file.

2017-06-27  Olivier Hainque  <hainque@adacore.com>

	* config/t-vxworks7: New file.

New file mistakenly omitted from previous commit referencing it.

From-SVN: r249938

libgcc/config/t-vxworks7

+# Don't build libgcc.a with debug info
+LIBGCC2_DEBUG_CFLAGS =
+
+# Extra libgcc2 modules used by gthr-vxworks.h functions
+LIB2ADDEH += $(srcdir)/config/vxlib.c $(srcdir)/config/vxlib-tls.c
+
+# This ensures that the correct target headers are used; some
+# VxWorks system headers have names that collide with GCC's
+# internal (host) headers, e.g. regs.h.
+LIBGCC2_INCLUDES = -nostdinc \
+  -I$(VSB_DIR)/h -I$(VSB_DIR)/share/h \
+  `case "/$(MULTIDIR)" in \
+      */mrtp*) echo -I$(VSB_DIR)/usr/h/public -I$(VSB_DIR)/usr/h ;; \
+      *) echo -I$(VSB_DIR)/krnl/h/system -I$(VSB_DIR)/krnl/h/public ;; \
+   esac`
+