Makefile.gcc-plugins 2.7 KB

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  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. SANCOV_PLUGIN := -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so
  5. gcc-plugin-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY) += cyc_complexity_plugin.so
  6. gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so
  7. gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += -DLATENT_ENTROPY_PLUGIN
  8. ifdef CONFIG_PAX_LATENT_ENTROPY
  9. DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable
  10. endif
  11. ifdef CONFIG_GCC_PLUGIN_SANCOV
  12. ifeq ($(CFLAGS_KCOV),)
  13. # It is needed because of the gcc-plugin.sh and gcc version checks.
  14. gcc-plugin-$(CONFIG_GCC_PLUGIN_SANCOV) += sancov_plugin.so
  15. ifneq ($(PLUGINCC),)
  16. CFLAGS_KCOV := $(SANCOV_PLUGIN)
  17. else
  18. $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler)
  19. endif
  20. endif
  21. endif
  22. gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += structleak_plugin.so
  23. gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE) += -fplugin-arg-structleak_plugin-verbose
  24. gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += -DSTRUCTLEAK_PLUGIN
  25. GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
  26. export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR
  27. export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
  28. ifneq ($(PLUGINCC),)
  29. # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
  30. GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
  31. endif
  32. KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
  33. GCC_PLUGIN := $(gcc-plugin-y)
  34. GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
  35. endif
  36. # If plugins aren't supported, abort the build before hard-to-read compiler
  37. # errors start getting spewed by the main build.
  38. PHONY += gcc-plugins-check
  39. gcc-plugins-check: FORCE
  40. ifdef CONFIG_GCC_PLUGINS
  41. ifeq ($(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
  51. endif
  52. @:
  53. # Actually do the build, if requested.
  54. PHONY += gcc-plugins
  55. gcc-plugins: scripts_basic gcc-plugins-check
  56. ifdef CONFIG_GCC_PLUGINS
  57. $(Q)$(MAKE) $(build)=scripts/gcc-plugins
  58. endif
  59. @: