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 := $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y))
23
24  export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN SANCOV_PLUGIN
25
26  ifeq ($(PLUGINCC),)
27    ifneq ($(GCC_PLUGINS_CFLAGS),)
28      ifeq ($(call cc-ifversion, -ge, 0405, y), y)
29        PLUGINCC := $(shell $(CONFIG_SHELL) -x $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)")
30        $(warning warning: your gcc installation does not support plugins, perhaps the necessary headers are missing?)
31      else
32        $(warning warning: your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least)
33      endif
34    endif
35  else
36    # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
37    GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
38  endif
39
40  KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
41  GCC_PLUGIN := $(gcc-plugin-y)
42
43endif
44