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