1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 2
3 $(obj)/randomize_layout_plugin.so: $(obj)/rand 3 $(obj)/randomize_layout_plugin.so: $(obj)/randomize_layout_seed.h
4 quiet_cmd_create_randomize_layout_seed = SEEDH 4 quiet_cmd_create_randomize_layout_seed = SEEDHDR $@
5 cmd_create_randomize_layout_seed = \ 5 cmd_create_randomize_layout_seed = \
6 SEED=$$(cat $(filter-out FORCE,$^) </d 6 SEED=$$(cat $(filter-out FORCE,$^) </dev/null); \
7 echo '/*' > $@; \ 7 echo '/*' > $@; \
8 echo ' * This file is automatically ge 8 echo ' * This file is automatically generated. Keep it private.' >> $@; \
9 echo ' * Exposing this value will expo 9 echo ' * Exposing this value will expose the layout of randomized structures.' >> $@; \
10 echo ' */' >> $@; \ 10 echo ' */' >> $@; \
11 echo "const char *randstruct_seed = \" 11 echo "const char *randstruct_seed = \"$$SEED\";" >> $@
12 $(obj)/randomize_layout_seed.h: $(objtree)/scr 12 $(obj)/randomize_layout_seed.h: $(objtree)/scripts/basic/randstruct.seed FORCE
13 $(call if_changed,create_randomize_lay 13 $(call if_changed,create_randomize_layout_seed)
14 targets += randomize_layout_seed.h 14 targets += randomize_layout_seed.h
15 15
16 # Build rules for plugins 16 # Build rules for plugins
17 # 17 #
18 # No extra code is needed for single-file plug 18 # No extra code is needed for single-file plugins.
19 # For multi-file plugins, use *-objs syntax to 19 # For multi-file plugins, use *-objs syntax to list the objects.
20 # 20 #
21 # If the plugin foo.so is compiled from foo.c 21 # If the plugin foo.so is compiled from foo.c and foo2.c, you can do:
22 # 22 #
23 # foo-objs := foo.o foo2.o 23 # foo-objs := foo.o foo2.o
24 24
25 always-y += $(GCC_PLUGIN) 25 always-y += $(GCC_PLUGIN)
26 26
27 GCC_PLUGINS_DIR = $(shell $(CC) -print-file-na 27 GCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin)
28 28
29 plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD 29 plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \
30 -include $(srctree)/include/ 30 -include $(srctree)/include/linux/compiler-version.h \
31 -DPLUGIN_VERSION=$(call stri 31 -DPLUGIN_VERSION=$(call stringify,$(KERNELVERSION)) \
32 -I $(GCC_PLUGINS_DIR)/includ !! 32 -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \
33 -fno-rtti -fno-exceptions -f 33 -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \
34 -ggdb -Wno-narrowing -Wno-un 34 -ggdb -Wno-narrowing -Wno-unused-variable \
35 -Wno-format-diag 35 -Wno-format-diag
36 36
37 plugin_ldflags = -shared 37 plugin_ldflags = -shared
38 38
39 plugin-single := $(foreach m, $(GCC_PLUGIN), 39 plugin-single := $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m)))
40 plugin-multi := $(filter-out $(plugin-singl 40 plugin-multi := $(filter-out $(plugin-single), $(GCC_PLUGIN))
41 plugin-objs := $(sort $(foreach m, $(plugi 41 plugin-objs := $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs))))
42 42
43 targets += $(plugin-single) $(plugin-multi) $( 43 targets += $(plugin-single) $(plugin-multi) $(plugin-objs)
44 clean-files += *.so 44 clean-files += *.so
45 45
46 plugin-single := $(addprefix $(obj)/, $(plug 46 plugin-single := $(addprefix $(obj)/, $(plugin-single))
47 plugin-multi := $(addprefix $(obj)/, $(plug 47 plugin-multi := $(addprefix $(obj)/, $(plugin-multi))
48 plugin-objs := $(addprefix $(obj)/, $(plug 48 plugin-objs := $(addprefix $(obj)/, $(plugin-objs))
49 49
50 quiet_cmd_plugin_cxx_so_c = HOSTCXX $@ 50 quiet_cmd_plugin_cxx_so_c = HOSTCXX $@
51 cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugi 51 cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $<
52 52
53 $(plugin-single): $(obj)/%.so: $(src)/%.c FORC 53 $(plugin-single): $(obj)/%.so: $(src)/%.c FORCE
54 $(call if_changed_dep,plugin_cxx_so_c) 54 $(call if_changed_dep,plugin_cxx_so_c)
55 55
56 quiet_cmd_plugin_ld_so_o = HOSTLD $@ 56 quiet_cmd_plugin_ld_so_o = HOSTLD $@
57 cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin 57 cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \
58 $(addprefix $(obj)/ 58 $(addprefix $(obj)/, $($(target-stem)-objs))
59 59
60 $(plugin-multi): FORCE 60 $(plugin-multi): FORCE
61 $(call if_changed,plugin_ld_so_o) 61 $(call if_changed,plugin_ld_so_o)
62 $(foreach m, $(notdir $(plugin-multi)), $(eval 62 $(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs)))))
63 63
64 quiet_cmd_plugin_cxx_o_c = HOSTCXX $@ 64 quiet_cmd_plugin_cxx_o_c = HOSTCXX $@
65 cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin 65 cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $<
66 66
67 $(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE 67 $(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE
68 $(call if_changed_dep,plugin_cxx_o_c) 68 $(call if_changed_dep,plugin_cxx_o_c)
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