1ifdef CONFIG_GCC_PLUGINS 2 __PLUGINCC := $(call cc-ifversion, -ge, 0408, $(HOSTCXX), $(HOSTCC)) 3 PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)") 4 5 SANCOV_PLUGIN := -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so 6 7 gcc-plugin-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY) += cyc_complexity_plugin.so 8 9 gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so 10 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += -DLATENT_ENTROPY_PLUGIN 11 ifdef CONFIG_PAX_LATENT_ENTROPY 12 DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable 13 endif 14 15 ifdef CONFIG_GCC_PLUGIN_SANCOV 16 ifeq ($(CFLAGS_KCOV),) 17 # It is needed because of the gcc-plugin.sh and gcc version checks. 18 gcc-plugin-$(CONFIG_GCC_PLUGIN_SANCOV) += sancov_plugin.so 19 20 ifneq ($(PLUGINCC),) 21 CFLAGS_KCOV := $(SANCOV_PLUGIN) 22 else 23 $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler) 24 endif 25 endif 26 endif 27 28 gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += structleak_plugin.so 29 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE) += -fplugin-arg-structleak_plugin-verbose 30 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += -DSTRUCTLEAK_PLUGIN 31 32 GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) 33 34 export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR 35 export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN 36 37 ifneq ($(PLUGINCC),) 38 # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication. 39 GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS)) 40 endif 41 42 KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) 43 GCC_PLUGIN := $(gcc-plugin-y) 44 GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y) 45endif 46 47# If plugins aren't supported, abort the build before hard-to-read compiler 48# errors start getting spewed by the main build. 49PHONY += gcc-plugins-check 50gcc-plugins-check: FORCE 51ifdef CONFIG_GCC_PLUGINS 52 ifeq ($(PLUGINCC),) 53 ifneq ($(GCC_PLUGINS_CFLAGS),) 54 ifeq ($(call cc-ifversion, -ge, 0405, y), y) 55 $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true 56 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1 57 else 58 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5" >&2 && exit 1 59 endif 60 endif 61 endif 62endif 63 @: 64 65# Actually do the build, if requested. 66PHONY += gcc-plugins 67gcc-plugins: scripts_basic gcc-plugins-check 68ifdef CONFIG_GCC_PLUGINS 69 $(Q)$(MAKE) $(build)=scripts/gcc-plugins 70endif 71 @: 72