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1# SPDX-License-Identifier: GPL-2.0
2ifdef CONFIG_GCC_PLUGINS
3 __PLUGINCC := $(call cc-ifversion, -ge, 0408, $(HOSTCXX), $(HOSTCC))
4 PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)")
5
6 SANCOV_PLUGIN := -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so
7
8 gcc-plugin-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY) += cyc_complexity_plugin.so
9
10 gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so
11 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += -DLATENT_ENTROPY_PLUGIN
12 ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
13 DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable
14 endif
15
16 ifdef CONFIG_GCC_PLUGIN_SANCOV
17 ifeq ($(strip $(CFLAGS_KCOV)),)
18 # It is needed because of the gcc-plugin.sh and gcc version checks.
19 gcc-plugin-$(CONFIG_GCC_PLUGIN_SANCOV) += sancov_plugin.so
20
21 ifneq ($(PLUGINCC),)
22 CFLAGS_KCOV := $(SANCOV_PLUGIN)
23 else
24 $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler)
25 endif
26 endif
27 endif
28
29 gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += structleak_plugin.so
30 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE) += -fplugin-arg-structleak_plugin-verbose
31 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL) += -fplugin-arg-structleak_plugin-byref-all
32 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += -DSTRUCTLEAK_PLUGIN
33
34 gcc-plugin-$(CONFIG_GCC_PLUGIN_RANDSTRUCT) += randomize_layout_plugin.so
35 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_RANDSTRUCT) += -DRANDSTRUCT_PLUGIN
36 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE) += -fplugin-arg-randomize_layout_plugin-performance-mode
37
38 GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
39
40 export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR
41 export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
42
43 ifneq ($(PLUGINCC),)
44 # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
45 GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
46 endif
47
48 KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
49 GCC_PLUGIN := $(gcc-plugin-y)
50 GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
51endif
52
53# If plugins aren't supported, abort the build before hard-to-read compiler
54# errors start getting spewed by the main build.
55PHONY += gcc-plugins-check
56gcc-plugins-check: FORCE
57ifdef CONFIG_GCC_PLUGINS
58 ifeq ($(PLUGINCC),)
59 ifneq ($(GCC_PLUGINS_CFLAGS),)
60 # Various gccs between 4.5 and 5.1 have bugs on powerpc due to missing
61 # header files. gcc <= 4.6 doesn't work at all, gccs from 4.8 to 5.1 have
62 # issues with 64-bit targets.
63 ifeq ($(ARCH),powerpc)
64 ifeq ($(call cc-ifversion, -le, 0501, y), y)
65 @echo "Cannot use CONFIG_GCC_PLUGINS: plugin support on gcc <= 5.1 is buggy on powerpc, please upgrade to gcc 5.2 or newer" >&2 && exit 1
66 endif
67 endif
68 ifeq ($(call cc-ifversion, -ge, 0405, y), y)
69 $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
70 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
71 else
72 @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
73 endif
74 endif
75 endif
76endif
77 @:
78
79# Actually do the build, if requested.
80PHONY += gcc-plugins
81gcc-plugins: scripts_basic gcc-plugins-check
82ifdef CONFIG_GCC_PLUGINS
83 $(Q)$(MAKE) $(build)=scripts/gcc-plugins
84endif
85 @:
1# SPDX-License-Identifier: GPL-2.0
2
3gcc-plugin-$(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