blob: 82335533620e0df172feade18b471623c9bfeb6b [file] [log] [blame]
Emese Revfy6b90bd42016-05-24 00:09:38 +02001ifdef 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
Emese Revfy543c37c2016-05-24 00:11:37 +02005 SANCOV_PLUGIN := -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so
6
Emese Revfy0dae7762016-05-24 00:10:35 +02007 gcc-plugin-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY) += cyc_complexity_plugin.so
Emese Revfy543c37c2016-05-24 00:11:37 +02008
Emese Revfy38addce2016-06-20 20:41:19 +02009 gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += latent_entropy_plugin.so
10 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) += -DLATENT_ENTROPY_PLUGIN
Andrew Donnellan7b4010e2016-12-06 17:27:58 +110011 ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
Emese Revfy38addce2016-06-20 20:41:19 +020012 DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable
13 endif
14
Emese Revfy543c37c2016-05-24 00:11:37 +020015 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 $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler)
24 endif
25 endif
26 endif
27
Kees Cookc61f13e2017-01-13 11:14:39 -080028 gcc-plugin-$(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
Emese Revfy65d59ec2016-06-20 20:40:24 +020032 GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
Emese Revfy6b90bd42016-05-24 00:09:38 +020033
Emese Revfy38addce2016-06-20 20:41:19 +020034 export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR
35 export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
Emese Revfy6b90bd42016-05-24 00:09:38 +020036
Kees Cooked58c0e2016-06-17 23:11:12 -070037 ifneq ($(PLUGINCC),)
Emese Revfy543c37c2016-05-24 00:11:37 +020038 # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
39 GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
Emese Revfy6b90bd42016-05-24 00:09:38 +020040 endif
41
42 KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
43 GCC_PLUGIN := $(gcc-plugin-y)
Emese Revfycaefd8c2016-06-26 17:38:20 +020044 GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
Emese Revfy6b90bd42016-05-24 00:09:38 +020045endif
Kees Cooked58c0e2016-06-17 23:11:12 -070046
47# If plugins aren't supported, abort the build before hard-to-read compiler
48# errors start getting spewed by the main build.
49PHONY += gcc-plugins-check
50gcc-plugins-check: FORCE
51ifdef CONFIG_GCC_PLUGINS
52 ifeq ($(PLUGINCC),)
53 ifneq ($(GCC_PLUGINS_CFLAGS),)
Andrew Donnellan65c059bc2016-12-06 17:28:00 +110054 # Various gccs between 4.5 and 5.1 have bugs on powerpc due to missing
55 # header files. gcc <= 4.6 doesn't work at all, gccs from 4.8 to 5.1 have
56 # issues with 64-bit targets.
57 ifeq ($(ARCH),powerpc)
58 ifeq ($(call cc-ifversion, -le, 0501, y), y)
59 @echo "Cannot use CONFIG_GCC_PLUGINS: plugin support on gcc <= 5.1 is buggy on powerpc, please upgrade to gcc 5.2 or newer" >&2 && exit 1
60 endif
61 endif
Kees Cooked58c0e2016-06-17 23:11:12 -070062 ifeq ($(call cc-ifversion, -ge, 0405, y), y)
63 $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
64 @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
65 else
66 @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
67 endif
68 endif
69 endif
70endif
71 @:
72
73# Actually do the build, if requested.
74PHONY += gcc-plugins
75gcc-plugins: scripts_basic gcc-plugins-check
76ifdef CONFIG_GCC_PLUGINS
77 $(Q)$(MAKE) $(build)=scripts/gcc-plugins
78endif
79 @: