# SPDX-License-Identifier: GPL-2.0 $(obj)/randomize_layout_plugin.so: $(obj)/randomize_layout_seed.hquiet_cmd_create_randomize_layout_seed = SEEDHDR $@cmd_create_randomize_layout_seed = \	SEED=$$(cat $(filter-out FORCE,$^) </dev/null); \	echo '/*' > $@; \	echo ' * This file is automatically generated. Keep it private.' >> $@; \	echo ' * Exposing this value will expose the layout of randomized structures.' >> $@; \	echo ' */' >> $@; \	echo "const char *randstruct_seed = \"$$SEED\";" >> $@$(obj)/randomize_layout_seed.h: $(objtree)/scripts/basic/randstruct.seed FORCE	$(call if_changed,create_randomize_layout_seed)targets += randomize_layout_seed.h # Build rules for plugins## No extra code is needed for single-file plugins.# For multi-file plugins, use *-objs syntax to list the objects.## If the plugin foo.so is compiled from foo.c and foo2.c, you can do:## foo-objs := foo.o foo2.o always-y += $(GCC_PLUGIN) GCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin) plugin_cxxflags	= -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \		  -include $(srctree)/include/linux/compiler-version.h \		  -DPLUGIN_VERSION=$(call stringify,$(KERNELVERSION)) \		  -I $(GCC_PLUGINS_DIR)/include -I $(obj) \		  -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \		  -ggdb -Wno-narrowing -Wno-unused-variable \		  -Wno-format-diag plugin_ldflags	= -shared plugin-single	:= $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m)))plugin-multi	:= $(filter-out $(plugin-single), $(GCC_PLUGIN))plugin-objs	:= $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs)))) targets += $(plugin-single) $(plugin-multi) $(plugin-objs)clean-files += *.so plugin-single	:= $(addprefix $(obj)/, $(plugin-single))plugin-multi	:= $(addprefix $(obj)/, $(plugin-multi))plugin-objs	:= $(addprefix $(obj)/, $(plugin-objs)) quiet_cmd_plugin_cxx_so_c = HOSTCXX $@      cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $< $(plugin-single): $(obj)/%.so: $(src)/%.c FORCE	$(call if_changed_dep,plugin_cxx_so_c) quiet_cmd_plugin_ld_so_o = HOSTLD  $@      cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \			   $(addprefix $(obj)/, $($(target-stem)-objs)) $(plugin-multi): FORCE	$(call if_changed,plugin_ld_so_o)$(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs))))) quiet_cmd_plugin_cxx_o_c = HOSTCXX $@      cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< $(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE	$(call if_changed_dep,plugin_cxx_o_c) $(obj)/../../include/generated/gcc-plugins.h: $(plugin-single) $(plugin-multi) FORCE	$(call if_changed,touch)always-y += ../../include/generated/gcc-plugins.h