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# SPDX-License-Identifier: GPL-2.0-only
config HAVE_GCC_PLUGINS
bool
help
An arch should select this symbol if it supports building with
GCC plugins.
menuconfig GCC_PLUGINS
bool "GCC plugins"
depends on HAVE_GCC_PLUGINS
depends on CC_IS_GCC
depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h)
default y
help
GCC plugins are loadable modules that provide extra features to the
compiler. They are useful for runtime instrumentation and static analysis.
See Documentation/kbuild/gcc-plugins.rst for details.
if GCC_PLUGINS
config GCC_PLUGIN_LATENT_ENTROPY
bool "Generate some entropy during boot and runtime"
help
By saying Y here the kernel will instrument some kernel code to
extract some entropy from both original and artificially created
program state. This will help especially embedded systems where
there is little 'natural' source of entropy normally. The cost
is some slowdown of the boot process (about 0.5%) and fork and
irq processing.
Note that entropy extracted this way is not cryptographically
secure!
This plugin was ported from grsecurity/PaX. More information at:
* https://grsecurity.net/
* https://pax.grsecurity.net/
endif
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