gcc-plugins: allow to enable GCC_PLUGINS for COMPILE_TEST

Now that the compiler's plugin support is checked in Kconfig,
all{yes,mod}config will not be bothered.

Remove 'depends on !COMPILE_TEST' for GCC_PLUGINS.

'depends on !COMPILE_TEST' for the following three are still kept:
  GCC_PLUGIN_CYC_COMPLEXITY
  GCC_PLUGIN_STRUCTLEAK_VERBOSE
  GCC_PLUGIN_RANDSTRUCT_PERFORMANCE

Kees suggested to do so because the first two are too noisy, and the
last one would reduce the compile test coverage.  I commented the
reasons in arch/Kconfig.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kees Cook <keescook@chromium.org>

diff --git a/arch/Kconfig b/arch/Kconfig
index e4a47d640a877384e6e99da75931024c27c32ba0..c2695293ca5b0c9388c5f89e00f988f32dc80c34 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -417,7 +417,6 @@ menuconfig GCC_PLUGINS
        bool "GCC plugins"
        depends on HAVE_GCC_PLUGINS
        depends on PLUGIN_HOSTCC != ""
-       depends on !COMPILE_TEST
        help
          GCC plugins are loadable modules that provide extra features to the
          compiler. They are useful for runtime instrumentation and static analysis.
@@ -427,7 +426,7 @@ menuconfig GCC_PLUGINS
 config GCC_PLUGIN_CYC_COMPLEXITY
        bool "Compute the cyclomatic complexity of a function" if EXPERT
        depends on GCC_PLUGINS
-       depends on !COMPILE_TEST
+       depends on !COMPILE_TEST        # too noisy
        help
          The complexity M of a function's control flow graph is defined as:
           M = E - N + 2P
@@ -494,7 +493,7 @@ config GCC_PLUGIN_STRUCTLEAK_BYREF_ALL
 config GCC_PLUGIN_STRUCTLEAK_VERBOSE
        bool "Report forcefully initialized variables"
        depends on GCC_PLUGIN_STRUCTLEAK
-       depends on !COMPILE_TEST
+       depends on !COMPILE_TEST        # too noisy
        help
          This option will cause a warning to be printed each time the
          structleak plugin finds a variable it thinks needs to be
@@ -534,7 +533,7 @@ config GCC_PLUGIN_RANDSTRUCT
 config GCC_PLUGIN_RANDSTRUCT_PERFORMANCE
        bool "Use cacheline-aware structure randomization"
        depends on GCC_PLUGIN_RANDSTRUCT
-       depends on !COMPILE_TEST
+       depends on !COMPILE_TEST        # do not reduce test coverage
        help
          If you say Y here, the RANDSTRUCT randomization will make a
          best effort at restricting randomization to cacheline-sized