binutils/gcc: shared lib support (with classy OS file)

gcc-11.2.0/gcc/config.gcc

@@ -3252,6 +3252,7 @@ sh-*-elf* | sh[12346l]*-*-elf* | \
 			tm_file="${tm_file} sh/embed-elf.h"
 			tm_file="${tm_file} sh/superh.h"
 			extra_options="${extra_options} sh/superh.opt" ;;
+	sh*-*-vhex*)	tm_file="${tm_file} sh/vhex.h" ;;
 	*)		if test x$with_newlib = xyes \
 			   && test x$with_libgloss = xyes; then
 				tm_file="${tm_file} sh/newlib.h"

gcc-11.2.0/gcc/config/sh/vhex.h

@@ -0,0 +1,16 @@
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+  ""
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  ""
+
+#undef LIB_SPEC
+#define LIB_SPEC "-lc"
+
+#undef USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX "_"
+
+#undef LINK_SPEC
+#define LINK_SPEC SH_LINK_SPEC "%{shared:-shared} %{static:-static} %{!shared: %{!static: %{rdynamic:-export-dynamic}}}"

gcc-11.2.0/libgcc/config.host

@@ -1359,7 +1359,8 @@ sh-*-rtems*)
 		libgcc-Os-4-200.a libgcc-4-300.a"
 	;;
 sh*-*-vhex*)
-	tmake_file="${tmake_file} sh/t-sh t-slibgcc-libgcc t-libgcc-pic"
+	tmake_file="${tmake_file} sh/t-sh t-slibgcc t-slibgcc-libgcc t-libgcc-pic \
+	  t-fdpbit"
 	;;
 sh-wrs-vxworks)
 	tmake_file="$tmake_file sh/t-sh t-crtstuff-pic t-fdpbit"