1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 !! 2 ifdef CONFIG_GCC_PLUGINS
3 gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) !! 3 __PLUGINCC := $(call cc-ifversion, -ge, 0408, $(HOSTCXX), $(HOSTCC))
4 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_E !! 4 PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)")
5 += -DLATENT_ENTROPY_PLUGIN !! 5
6 ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY !! 6 SANCOV_PLUGIN := -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so
7 DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin- !! 7
>> 8 gcc-plugin-$(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 ($(CFLAGS_KCOV),)
>> 18 # It is needed because of the gcc-plugin.sh and gcc version checks.
>> 19 gcc-plugin-$(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 := $(gcc-plugin-subdir-y)
8 endif 51 endif
9 export DISABLE_LATENT_ENTROPY_PLUGIN <<
10 52
11 gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) !! 53 # If plugins aren't supported, abort the build before hard-to-read compiler
12 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLE !! 54 # errors start getting spewed by the main build.
13 += -fplugin-arg-structleak_plu !! 55 PHONY += gcc-plugins-check
14 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLE !! 56 gcc-plugins-check: FORCE
15 += -fplugin-arg-structleak_plu !! 57 ifdef CONFIG_GCC_PLUGINS
16 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLE !! 58 ifeq ($(PLUGINCC),)
17 += -fplugin-arg-structleak_plu !! 59 ifneq ($(GCC_PLUGINS_CFLAGS),)
18 ifdef CONFIG_GCC_PLUGIN_STRUCTLEAK !! 60 # Various gccs between 4.5 and 5.1 have bugs on powerpc due to missing
19 DISABLE_STRUCTLEAK_PLUGIN += -fplugin-arg- !! 61 # header files. gcc <= 4.6 doesn't work at all, gccs from 4.8 to 5.1 have
20 endif !! 62 # issues with 64-bit targets.
21 export DISABLE_STRUCTLEAK_PLUGIN !! 63 ifeq ($(ARCH),powerpc)
22 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STRUCTLE !! 64 ifeq ($(call cc-ifversion, -le, 0501, y), y)
23 += -DSTRUCTLEAK_PLUGIN !! 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
24 !! 66 endif
25 gcc-plugin-$(CONFIG_GCC_PLUGIN_STACKLEAK) !! 67 endif
26 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEA !! 68 ifeq ($(call cc-ifversion, -ge, 0405, y), y)
27 += -DSTACKLEAK_PLUGIN !! 69 $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
28 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEA !! 70 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
29 += -fplugin-arg-stackleak_plug !! 71 else
30 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEA !! 72 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5" >&2 && exit 1
31 += -fplugin-arg-stackleak_plug !! 73 endif
32 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_STACKLEA !! 74 endif
33 += -fplugin-arg-stackleak_plug !! 75 endif
34 ifdef CONFIG_GCC_PLUGIN_STACKLEAK <<
35 DISABLE_STACKLEAK_PLUGIN += -fplugin-arg-s <<
36 endif 76 endif
37 export DISABLE_STACKLEAK_PLUGIN !! 77 @:
38 78
39 gcc-plugin-$(CONFIG_GCC_PLUGIN_ARM_SSP_PER_TAS !! 79 # Actually do the build, if requested.
40 ifdef CONFIG_GCC_PLUGIN_ARM_SSP_PER_TASK !! 80 PHONY += gcc-plugins
41 DISABLE_ARM_SSP_PER_TASK_PLUGIN += -fplugi !! 81 gcc-plugins: scripts_basic gcc-plugins-check
>> 82 ifdef CONFIG_GCC_PLUGINS
>> 83 $(Q)$(MAKE) $(build)=scripts/gcc-plugins
42 endif 84 endif
43 export DISABLE_ARM_SSP_PER_TASK_PLUGIN !! 85 @:
44 <<
45 # All the plugin CFLAGS are collected here in <<
46 # filter them out of the KBUILD_CFLAGS. <<
47 GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fpl <<
48 export GCC_PLUGINS_CFLAGS <<
49 <<
50 # Add the flags to the build! <<
51 KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) <<
52 <<
53 # Some plugins are enabled outside of this Mak <<
54 # be included in GCC_PLUGIN so they can get bu <<
55 gcc-plugin-external-$(CONFIG_GCC_PLUGIN_SANCOV <<
56 += sancov_plugin.so <<
57 gcc-plugin-external-$(CONFIG_GCC_PLUGIN_RANDST <<
58 += randomize_layout_plugin.so <<
59 <<
60 # All enabled GCC plugins are collected here f <<
61 # scripts/gcc-scripts/Makefile. <<
62 GCC_PLUGIN := $(gcc-plugin-y) $(gcc-plugin-ext <<
63 export GCC_PLUGIN <<
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