blob: 060d2cb373dbe3fe788b7ad01b7868eca3b73166
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_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 := $(gcc-plugin-subdir-y) |
41 | endif |
42 | |
43 | # If plugins aren't supported, abort the build before hard-to-read compiler |
44 | # errors start getting spewed by the main build. |
45 | PHONY += gcc-plugins-check |
46 | gcc-plugins-check: FORCE |
47 | ifdef CONFIG_GCC_PLUGINS |
48 | ifeq ($(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 |
58 | endif |
59 | @: |
60 | |
61 | # Actually do the build, if requested. |
62 | PHONY += gcc-plugins |
63 | gcc-plugins: scripts_basic gcc-plugins-check |
64 | ifdef CONFIG_GCC_PLUGINS |
65 | $(Q)$(MAKE) $(build)=scripts/gcc-plugins |
66 | endif |
67 | @: |
68 |