1# SPDX-License-Identifier: GPL-2.0
 2
 3gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY)	+= latent_entropy_plugin.so
 4gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY)		\
 5		+= -DLATENT_ENTROPY_PLUGIN
 6ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
 7    DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable -ULATENT_ENTROPY_PLUGIN
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8endif
 9export DISABLE_LATENT_ENTROPY_PLUGIN
10
11gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK)	+= structleak_plugin.so
12gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE)	\
13		+= -fplugin-arg-structleak_plugin-verbose
14gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF)		\
15		+= -fplugin-arg-structleak_plugin-byref
16gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL)	\
17		+= -fplugin-arg-structleak_plugin-byref-all
18ifdef CONFIG_GCC_PLUGIN_STRUCTLEAK
19    DISABLE_STRUCTLEAK_PLUGIN += -fplugin-arg-structleak_plugin-disable
20endif
21export DISABLE_STRUCTLEAK_PLUGIN
22gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK)		\
23		+= -DSTRUCTLEAK_PLUGIN
24
25gcc-plugin-$(CONFIG_GCC_PLUGIN_STACKLEAK)	+= stackleak_plugin.so
26gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK)		\
27		+= -DSTACKLEAK_PLUGIN
28gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK)		\
29		+= -fplugin-arg-stackleak_plugin-track-min-size=$(CONFIG_STACKLEAK_TRACK_MIN_SIZE)
30gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK)		\
31		+= -fplugin-arg-stackleak_plugin-arch=$(SRCARCH)
32gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEAK_VERBOSE)	\
33		+= -fplugin-arg-stackleak_plugin-verbose
34ifdef CONFIG_GCC_PLUGIN_STACKLEAK
35    DISABLE_STACKLEAK_PLUGIN += -fplugin-arg-stackleak_plugin-disable
36endif
37export DISABLE_STACKLEAK_PLUGIN
38
39gcc-plugin-$(CONFIG_GCC_PLUGIN_ARM_SSP_PER_TASK) += arm_ssp_per_task_plugin.so
40ifdef CONFIG_GCC_PLUGIN_ARM_SSP_PER_TASK
41    DISABLE_ARM_SSP_PER_TASK_PLUGIN += -fplugin-arg-arm_ssp_per_task_plugin-disable
 
 
42endif
43export DISABLE_ARM_SSP_PER_TASK_PLUGIN
44
45# All the plugin CFLAGS are collected here in case a build target needs to
46# filter them out of the KBUILD_CFLAGS.
47GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
48export GCC_PLUGINS_CFLAGS
49
50# Add the flags to the build!
51KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
52
53# Some plugins are enabled outside of this Makefile, but they still need to
54# be included in GCC_PLUGIN so they can get built.
55gcc-plugin-external-$(CONFIG_GCC_PLUGIN_SANCOV)			\
56	+= sancov_plugin.so
57gcc-plugin-external-$(CONFIG_GCC_PLUGIN_RANDSTRUCT)		\
58	+= randomize_layout_plugin.so
59
60# All enabled GCC plugins are collected here for building in
61# scripts/gcc-scripts/Makefile.
62GCC_PLUGIN := $(gcc-plugin-y) $(gcc-plugin-external-y)
63export GCC_PLUGIN

 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_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
29
30  export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR
31  export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
32
33  ifneq ($(PLUGINCC),)
34    # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
35    GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
36  endif
37
38  KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
39  GCC_PLUGIN := $(gcc-plugin-y)
40  GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
41endif
 
42
43# If plugins aren't supported, abort the build before hard-to-read compiler
44# errors start getting spewed by the main build.
45PHONY += gcc-plugins-check
46gcc-plugins-check: FORCE
47ifdef CONFIG_GCC_PLUGINS
48  ifeq ($(PLUGINCC),)
49    ifneq ($(GCC_PLUGINS_CFLAGS),)
50      ifeq ($(call cc-ifversion, -ge, 0405, y), y)
51	$(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
52	@echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
53      else
54	@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
55      endif
56    endif
57  endif
 
 
 
 
 
 
 
 
 
 
58endif
59	@:
60
61# Actually do the build, if requested.
62PHONY += gcc-plugins
63gcc-plugins: scripts_basic gcc-plugins-check
64ifdef CONFIG_GCC_PLUGINS
65	$(Q)$(MAKE) $(build)=scripts/gcc-plugins
66endif
67	@: