ld: load dynamic linker at static address on Linux

* move stack area to static address at beginning of binary
* set ELF type of linker from shared to executable

fixes #3479

repos/base/lib/mk/ld-platform.inc

@@ -30,13 +30,22 @@ symbol.map: $(BASE_DIR)/lib/symbols/ld
 ifneq ($(filter linux, $(SPECS)),)
 
 ENTRY_POINT = _start_initial_stack
-LD_SCRIPT_SO = $(BASE_DIR)/src/ld/genode_rel.ld \
-              -T$(call select_from_repositories,src/ld/stack_area.ld) \
+LD_SCRIPT_SO = $(call select_from_repositories,src/ld/stack_area.ld) \
+               -T$(BASE_DIR)/src/ld/genode_rel.ld
 
 ifneq ($(filter x86_32, $(SPECS)),)
 LD_OPT     += -T$(DIR)/linux-32.ld
 endif
 
+#
+# set dynamic linker ELF type to executable
+#
+ifeq ($(called_from_lib_mk),yes)
+$(LIB).lib.so.stripped: postprocess.tag
+postprocess.tag: $(LIB).lib.so
+	$(VERBOSE)printf "\x02" | dd of=$(LIB).lib.so bs=1 seek=16 count=1 conv=notrunc
+endif
+
 else
 ENTRY_POINT = _start
 LD_OPT     += -T$(DIR)/linker.ld