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61f60bac8c
It's not meaningful for the GCC plugins to track their versions separately from the rest of the kernel. Switch all versions to the kernel version. Fix mismatched indenting while we're at it. Cc: linux-hardening@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
69 lines
2.5 KiB
Makefile
69 lines
2.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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$(obj)/randomize_layout_plugin.so: $(obj)/randomize_layout_seed.h
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quiet_cmd_create_randomize_layout_seed = SEEDHDR $@
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cmd_create_randomize_layout_seed = \
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SEED=$$(cat $(filter-out FORCE,$^) </dev/null); \
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echo '/*' > $@; \
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echo ' * This file is automatically generated. Keep it private.' >> $@; \
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echo ' * Exposing this value will expose the layout of randomized structures.' >> $@; \
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echo ' */' >> $@; \
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echo "const char *randstruct_seed = \"$$SEED\";" >> $@
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$(obj)/randomize_layout_seed.h: $(objtree)/scripts/basic/randstruct.seed FORCE
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$(call if_changed,create_randomize_layout_seed)
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targets += randomize_layout_seed.h
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# Build rules for plugins
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#
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# No extra code is needed for single-file plugins.
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# For multi-file plugins, use *-objs syntax to list the objects.
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#
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# If the plugin foo.so is compiled from foo.c and foo2.c, you can do:
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#
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# foo-objs := foo.o foo2.o
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always-y += $(GCC_PLUGIN)
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GCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin)
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plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \
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-include $(srctree)/include/linux/compiler-version.h \
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-include $(objtree)/include/generated/utsrelease.h \
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-I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \
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-fno-rtti -fno-exceptions -fasynchronous-unwind-tables \
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-ggdb -Wno-narrowing -Wno-unused-variable \
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-Wno-format-diag
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plugin_ldflags = -shared
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plugin-single := $(foreach m, $(GCC_PLUGIN), $(if $($(m:%.so=%-objs)),,$(m)))
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plugin-multi := $(filter-out $(plugin-single), $(GCC_PLUGIN))
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plugin-objs := $(sort $(foreach m, $(plugin-multi), $($(m:%.so=%-objs))))
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targets += $(plugin-single) $(plugin-multi) $(plugin-objs)
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clean-files += *.so
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plugin-single := $(addprefix $(obj)/, $(plugin-single))
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plugin-multi := $(addprefix $(obj)/, $(plugin-multi))
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plugin-objs := $(addprefix $(obj)/, $(plugin-objs))
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quiet_cmd_plugin_cxx_so_c = HOSTCXX $@
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cmd_plugin_cxx_so_c = $(HOSTCXX) $(plugin_cxxflags) $(plugin_ldflags) -o $@ $<
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$(plugin-single): $(obj)/%.so: $(src)/%.c FORCE
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$(call if_changed_dep,plugin_cxx_so_c)
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quiet_cmd_plugin_ld_so_o = HOSTLD $@
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cmd_plugin_ld_so_o = $(HOSTCXX) $(plugin_ldflags) -o $@ \
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$(addprefix $(obj)/, $($(target-stem)-objs))
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$(plugin-multi): FORCE
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$(call if_changed,plugin_ld_so_o)
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$(foreach m, $(notdir $(plugin-multi)), $(eval $(obj)/$m: $(addprefix $(obj)/, $($(m:%.so=%-objs)))))
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quiet_cmd_plugin_cxx_o_c = HOSTCXX $@
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cmd_plugin_cxx_o_c = $(HOSTCXX) $(plugin_cxxflags) -c -o $@ $<
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$(plugin-objs): $(obj)/%.o: $(src)/%.c FORCE
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$(call if_changed_dep,plugin_cxx_o_c)
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