1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 26b90bd4bSEmese Revfy 3*42640b13SMasahiro Yamada$(obj)/randomize_layout_plugin.so: $(objtree)/$(obj)/randomize_layout_seed.h 4313dd1b6SKees Cookquiet_cmd_create_randomize_layout_seed = GENSEED $@ 5313dd1b6SKees Cookcmd_create_randomize_layout_seed = \ 6313dd1b6SKees Cook $(CONFIG_SHELL) $(srctree)/$(src)/gen-random-seed.sh $@ $(objtree)/include/generated/randomize_layout_hash.h 7313dd1b6SKees Cook$(objtree)/$(obj)/randomize_layout_seed.h: FORCE 8313dd1b6SKees Cook $(call if_changed,create_randomize_layout_seed) 9*42640b13SMasahiro Yamadatargets += randomize_layout_seed.h randomize_layout_hash.h 10313dd1b6SKees Cook 11*42640b13SMasahiro Yamada# Build rules for plugins 12*42640b13SMasahiro Yamada# 13*42640b13SMasahiro Yamada# No extra code is needed for single-file plugins. 14*42640b13SMasahiro Yamada# For multi-file plugins, use *-objs syntax to list the objects. 15*42640b13SMasahiro Yamada# 16*42640b13SMasahiro Yamada# If the plugin foo.so is compiled from foo.c and foo2.c, you can do: 17*42640b13SMasahiro Yamada# 18*42640b13SMasahiro Yamada# foo-objs := foo.o foo2.o 196b90bd4bSEmese Revfy 20*42640b13SMasahiro Yamadaalways-y += $(GCC_PLUGIN) 21543c37cbSEmese Revfy 22*42640b13SMasahiro YamadaGCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin) 23*42640b13SMasahiro Yamada 24*42640b13SMasahiro Yamadaplugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \ 25*42640b13SMasahiro Yamada -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++98 \ 26*42640b13SMasahiro Yamada -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \ 27*42640b13SMasahiro Yamada -ggdb -Wno-narrowing -Wno-unused-variable -Wno-c++11-compat \ 28*42640b13SMasahiro Yamada -Wno-format-diag 29*42640b13SMasahiro Yamada 30*42640b13SMasahiro Yamadaplugin_ldflags = -shared 31*42640b13SMasahiro Yamada 32*42640b13SMasahiro Yamadaplugin-single := $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m))) 33*42640b13SMasahiro Yamadaplugin-multi := $(filter-out $(plugin-single), $(GCC_PLUGIN)) 34*42640b13SMasahiro Yamadaplugin-objs := $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs)))) 35*42640b13SMasahiro Yamada 36*42640b13SMasahiro Yamadatargets += $(plugin-single) $(plugin-multi) $(plugin-objs) 376b90bd4bSEmese Revfyclean-files += *.so 38*42640b13SMasahiro Yamada 39*42640b13SMasahiro Yamadaplugin-single := $(addprefix $(obj)/, $(plugin-single)) 40*42640b13SMasahiro Yamadaplugin-multi := $(addprefix $(obj)/, $(plugin-multi)) 41*42640b13SMasahiro Yamadaplugin-objs := $(addprefix $(obj)/, $(plugin-objs)) 42*42640b13SMasahiro Yamada 43*42640b13SMasahiro Yamadaquiet_cmd_plugin_cxx_so_c = HOSTCXX $@ 44*42640b13SMasahiro Yamada cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $< 45*42640b13SMasahiro Yamada 46*42640b13SMasahiro Yamada$(plugin-single): $(obj)/%.so: $(src)/%.c FORCE 47*42640b13SMasahiro Yamada $(call if_changed_dep,plugin_cxx_so_c) 48*42640b13SMasahiro Yamada 49*42640b13SMasahiro Yamadaquiet_cmd_plugin_ld_so_o = HOSTLD $@ 50*42640b13SMasahiro Yamada cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \ 51*42640b13SMasahiro Yamada $(addprefix $(obj)/, $($(target-stem)-objs)) 52*42640b13SMasahiro Yamada 53*42640b13SMasahiro Yamada$(plugin-multi): FORCE 54*42640b13SMasahiro Yamada $(call if_changed,plugin_ld_so_o) 55*42640b13SMasahiro Yamada$(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs))))) 56*42640b13SMasahiro Yamada 57*42640b13SMasahiro Yamadaquiet_cmd_plugin_cxx_o_c = HOSTCXX $@ 58*42640b13SMasahiro Yamada cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< 59*42640b13SMasahiro Yamada 60*42640b13SMasahiro Yamada$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE 61*42640b13SMasahiro Yamada $(call if_changed_dep,plugin_cxx_o_c) 62