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