+BUILD_ID_PREFIX=cd
+BUILD_ID_SUFFIX=d98cdd87f7fe64c13b6daad553987eafd40cbb
+BUILD_ID=$(BUILD_ID_PREFIX)$(BUILD_ID_SUFFIX)
+
+BUILD_DIR ?= build
+
+OBJS=$(BUILD_DIR)/dwarf_full/libhello_so \
+ $(BUILD_DIR)/elf_only/libhello_so \
+ $(BUILD_DIR)/build_id/libhello_so \
+ $(BUILD_DIR)/debug_link/libhello_so
+
+all: $(OBJS)
+
+%.o: %.c
+ $(CC) -gdwarf -fdebug-prefix-map=$(CURDIR)=. -fPIC -c -I. -o $@ $<
+
+# Master copy: ELF with DWARF and build-id
+$(BUILD_DIR)/dwarf_full/libhello_so: tp.o libhello.o
+ mkdir -p $(@D)
+ $(CC) -shared -gdwarf -llttng-ust -ldl -Wl,-soname,libhello.so -Wl,--build-id=0x$(BUILD_ID) -o $@ $^
+
+# ELF only, no debug symbols, no build-d
+$(BUILD_DIR)/elf_only/libhello_so: $(BUILD_DIR)/dwarf_full/libhello_so
+ mkdir -p $(@D)
+ objcopy -g $< $@.tmp
+ objcopy --remove-section=.note.gnu.build-id $@.tmp
+ mv $@.tmp $@
+
+# ELF with external build-id DWARF
+$(BUILD_DIR)/build_id/libhello_so: $(BUILD_DIR)/dwarf_full/libhello_so
+ mkdir -p $(@D)/.build-id/$(BUILD_ID_PREFIX)
+ objcopy --only-keep-debug $< $(@D)/.build-id/$(BUILD_ID_PREFIX)/$(BUILD_ID_SUFFIX).debug
+ objcopy -g $< $@
+
+# ELF with external debug link DWARF
+$(BUILD_DIR)/debug_link/libhello_so: $(BUILD_DIR)/dwarf_full/libhello_so
+ mkdir -p $(@D)
+ objcopy --remove-section=.note.gnu.build-id $< $@.tmp
+ objcopy --only-keep-debug $@.tmp $(@D)/libhello_so.debug
+ objcopy -g $@.tmp
+ cd $(@D) && objcopy --add-gnu-debuglink=libhello_so.debug $(@F).tmp
+ mv $@.tmp $@
+
+clean:
+ rm -f *.o
+
+dist-clean: clean
+ rm -rf $(BUILD_DIR)
+
+.PHONY: all clean dist-clean