Merge branch 'for-next/gcc-plugin/structleak' into for-linus/gcc-plugins
[linux-2.6-microblaze.git] / scripts / Makefile.gcc-plugins
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         $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler)
24       endif
25     endif
26   endif
27
28   gcc-plugin-$(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_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y))
33
34   export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR
35   export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN
36
37   ifneq ($(PLUGINCC),)
38     # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication.
39     GCC_PLUGINS_CFLAGS := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGINS_CFLAGS))
40   endif
41
42   KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
43   GCC_PLUGIN := $(gcc-plugin-y)
44   GCC_PLUGIN_SUBDIR := $(gcc-plugin-subdir-y)
45 endif
46
47 # If plugins aren't supported, abort the build before hard-to-read compiler
48 # errors start getting spewed by the main build.
49 PHONY += gcc-plugins-check
50 gcc-plugins-check: FORCE
51 ifdef CONFIG_GCC_PLUGINS
52   ifeq ($(PLUGINCC),)
53     ifneq ($(GCC_PLUGINS_CFLAGS),)
54       ifeq ($(call cc-ifversion, -ge, 0405, y), y)
55         $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)" || true
56         @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
57       else
58         @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
59       endif
60     endif
61   endif
62 endif
63         @:
64
65 # Actually do the build, if requested.
66 PHONY += gcc-plugins
67 gcc-plugins: scripts_basic gcc-plugins-check
68 ifdef CONFIG_GCC_PLUGINS
69         $(Q)$(MAKE) $(build)=scripts/gcc-plugins
70 endif
71         @: