1# SPDX-License-Identifier: GPL-2.0-only
 2config HAVE_GCC_PLUGINS
 3	bool
 4	help
 5	  An arch should select this symbol if it supports building with
 6	  GCC plugins.
 7
 8menuconfig GCC_PLUGINS
 9	bool "GCC plugins"
10	depends on HAVE_GCC_PLUGINS
11	depends on CC_IS_GCC
12	depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h)
13	default y
14	help
15	  GCC plugins are loadable modules that provide extra features to the
16	  compiler. They are useful for runtime instrumentation and static analysis.
17
18	  See Documentation/kbuild/gcc-plugins.rst for details.
19
20if GCC_PLUGINS
21
22config GCC_PLUGIN_SANCOV
23	bool
24	# Plugin can be removed once the kernel only supports GCC 6+
25	depends on !CC_HAS_SANCOV_TRACE_PC
26	help
27	  This plugin inserts a __sanitizer_cov_trace_pc() call at the start of
28	  basic blocks. It supports all gcc versions with plugin support (from
29	  gcc-4.5 on). It is based on the commit "Add fuzzing coverage support"
30	  by Dmitry Vyukov <dvyukov@google.com>.
31
32config GCC_PLUGIN_LATENT_ENTROPY
33	bool "Generate some entropy during boot and runtime"
34	help
35	  By saying Y here the kernel will instrument some kernel code to
36	  extract some entropy from both original and artificially created
37	  program state.  This will help especially embedded systems where
38	  there is little 'natural' source of entropy normally.  The cost
39	  is some slowdown of the boot process (about 0.5%) and fork and
40	  irq processing.
41
42	  Note that entropy extracted this way is not cryptographically
43	  secure!
44
45	  This plugin was ported from grsecurity/PaX. More information at:
46	   * https://grsecurity.net/
47	   * https://pax.grsecurity.net/
48
49config GCC_PLUGIN_ARM_SSP_PER_TASK
50	bool
51	depends on GCC_PLUGINS && ARM
52
53endif