scripts/Makefile.gcc-plugins

   1 ifdef 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
  43 endif