1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun$(obj)/randomize_layout_plugin.so: $(objtree)/$(obj)/randomize_layout_seed.h 4*4882a593Smuzhiyunquiet_cmd_create_randomize_layout_seed = GENSEED $@ 5*4882a593Smuzhiyuncmd_create_randomize_layout_seed = \ 6*4882a593Smuzhiyun $(CONFIG_SHELL) $(srctree)/$(src)/gen-random-seed.sh $@ $(objtree)/include/generated/randomize_layout_hash.h 7*4882a593Smuzhiyun$(objtree)/$(obj)/randomize_layout_seed.h: FORCE 8*4882a593Smuzhiyun $(call if_changed,create_randomize_layout_seed) 9*4882a593Smuzhiyuntargets += randomize_layout_seed.h randomize_layout_hash.h 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun# Build rules for plugins 12*4882a593Smuzhiyun# 13*4882a593Smuzhiyun# No extra code is needed for single-file plugins. 14*4882a593Smuzhiyun# For multi-file plugins, use *-objs syntax to list the objects. 15*4882a593Smuzhiyun# 16*4882a593Smuzhiyun# If the plugin foo.so is compiled from foo.c and foo2.c, you can do: 17*4882a593Smuzhiyun# 18*4882a593Smuzhiyun# foo-objs := foo.o foo2.o 19*4882a593Smuzhiyun 20*4882a593Smuzhiyunalways-y += $(GCC_PLUGIN) 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunGCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin) 23*4882a593Smuzhiyun 24*4882a593Smuzhiyunplugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \ 25*4882a593Smuzhiyun -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \ 26*4882a593Smuzhiyun -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \ 27*4882a593Smuzhiyun -ggdb -Wno-narrowing -Wno-unused-variable \ 28*4882a593Smuzhiyun -Wno-format-diag 29*4882a593Smuzhiyun 30*4882a593Smuzhiyunplugin_ldflags = -shared 31*4882a593Smuzhiyun 32*4882a593Smuzhiyunplugin-single := $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m))) 33*4882a593Smuzhiyunplugin-multi := $(filter-out $(plugin-single), $(GCC_PLUGIN)) 34*4882a593Smuzhiyunplugin-objs := $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs)))) 35*4882a593Smuzhiyun 36*4882a593Smuzhiyuntargets += $(plugin-single) $(plugin-multi) $(plugin-objs) 37*4882a593Smuzhiyunclean-files += *.so 38*4882a593Smuzhiyun 39*4882a593Smuzhiyunplugin-single := $(addprefix $(obj)/, $(plugin-single)) 40*4882a593Smuzhiyunplugin-multi := $(addprefix $(obj)/, $(plugin-multi)) 41*4882a593Smuzhiyunplugin-objs := $(addprefix $(obj)/, $(plugin-objs)) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyunquiet_cmd_plugin_cxx_so_c = HOSTCXX $@ 44*4882a593Smuzhiyun cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $< 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun$(plugin-single): $(obj)/%.so: $(src)/%.c FORCE 47*4882a593Smuzhiyun $(call if_changed_dep,plugin_cxx_so_c) 48*4882a593Smuzhiyun 49*4882a593Smuzhiyunquiet_cmd_plugin_ld_so_o = HOSTLD $@ 50*4882a593Smuzhiyun cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \ 51*4882a593Smuzhiyun $(addprefix $(obj)/, $($(target-stem)-objs)) 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun$(plugin-multi): FORCE 54*4882a593Smuzhiyun $(call if_changed,plugin_ld_so_o) 55*4882a593Smuzhiyun$(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs))))) 56*4882a593Smuzhiyun 57*4882a593Smuzhiyunquiet_cmd_plugin_cxx_o_c = HOSTCXX $@ 58*4882a593Smuzhiyun cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $< 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE 61*4882a593Smuzhiyun $(call if_changed_dep,plugin_cxx_o_c) 62