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_LATENT_ENTROPY
23	bool "Generate some entropy during boot and runtime"
24	help
25	  By saying Y here the kernel will instrument some kernel code to
26	  extract some entropy from both original and artificially created
27	  program state.  This will help especially embedded systems where
28	  there is little 'natural' source of entropy normally.  The cost
29	  is some slowdown of the boot process (about 0.5%) and fork and
30	  irq processing.
31
32	  Note that entropy extracted this way is not cryptographically
33	  secure!
34
35	  This plugin was ported from grsecurity/PaX. More information at:
36	   * https://grsecurity.net/
37	   * https://pax.grsecurity.net/
38
39endif
40