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gcc-plugins: Adjust Kconfig to avoid cyc_complexity

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In preparation for removing "depends on !COMPILE_TEST" from GCC_PLUGINS,
the GCC_PLUGIN_CYC_COMPLEXITY plugin needs to gain the restriction,
since it is mainly an example, and produces (intended) voluminous stderr
reporting, which is generally undesirable for allyesconfig-style build
tests. This additionally puts the plugin behind EXPERT and improves the
help text.

Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2016-11-08 16:27:03 -08:00
parent 68fdc678df
commit 215e2aa6c0
1 changed files with 6 additions and 1 deletions
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7
arch/Kconfig
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@ -363,8 +363,9 @@ menuconfig GCC_PLUGINS
See Documentation/gcc-plugins.txt for details.
config GCC_PLUGIN_CYC_COMPLEXITY
bool "Compute the cyclomatic complexity of a function"
bool "Compute the cyclomatic complexity of a function" if EXPERT
depends on GCC_PLUGINS
depends on !COMPILE_TEST
help
The complexity M of a function's control flow graph is defined as:
M = E - N + 2P
@ -374,6 +375,10 @@ config GCC_PLUGIN_CYC_COMPLEXITY
N = the number of nodes
P = the number of connected components (exit nodes).
Enabling this plugin reports the complexity to stderr during the
build. It mainly serves as a simple example of how to create a
gcc plugin for the kernel.
config GCC_PLUGIN_SANCOV
bool
depends on GCC_PLUGINS