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    SubjectRe: [PATCH] gcc-plugins: disable under COMPILE_TEST
    On Sat, Jun 11, 2016 at 6:12 PM, Kees Cook <keescook@chromium.org> wrote:
    > Since adding the gcc plugin development headers is required for the
    > gcc plugin support, we should ease into this new kernel build dependency
    > more slowly. For now, disable the gcc plugins under COMPILE_TEST so that
    > all*config builds will skip it.
    >

    [ This might be a bit off-topic - Feel free to answer ]

    Hi,

    I want to try that new "GCC-plugin" feature.
    Do you have a Git repo for "easy-testing"?

    Does the kernel's build-system check for installed "gcc-plugin
    development headers"?
    Which GCC versions support "gcc-plugin" feature?
    I am here on Ubuntu/precise AMD64 and have gcc-4.6.4 and gcc-4.9.2.

    [ Optional ]
    What about the topic and support for "LLVM/Clang and hardening" of the
    Linux-kernel?

    Regards,
    - Sedat -

    > Signed-off-by: Kees Cook <keescook@chromium.org>
    > ---
    > arch/Kconfig | 1 +
    > lib/Kconfig.debug | 4 ++--
    > 2 files changed, 3 insertions(+), 2 deletions(-)
    >
    > diff --git a/arch/Kconfig b/arch/Kconfig
    > index 83aa2a3c470d..3f06d678b1d7 100644
    > --- a/arch/Kconfig
    > +++ b/arch/Kconfig
    > @@ -366,6 +366,7 @@ config HAVE_GCC_PLUGINS
    > menuconfig GCC_PLUGINS
    > bool "GCC plugins"
    > depends on HAVE_GCC_PLUGINS
    > + 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.
    > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
    > index d40833b9b7f4..0f9981999a27 100644
    > --- a/lib/Kconfig.debug
    > +++ b/lib/Kconfig.debug
    > @@ -713,8 +713,8 @@ config KCOV
    > bool "Code coverage for fuzzing"
    > depends on ARCH_HAS_KCOV
    > select DEBUG_FS
    > - select GCC_PLUGINS
    > - select GCC_PLUGIN_SANCOV
    > + select GCC_PLUGINS if !COMPILE_TEST
    > + select GCC_PLUGIN_SANCOV if !COMPILE_TEST
    > help
    > KCOV exposes kernel code coverage information in a form suitable
    > for coverage-guided fuzzing (randomized testing).
    > --
    > 2.7.4
    >
    >
    > --
    > Kees Cook
    > Chrome OS & Brillo Security
    > --
    > To unsubscribe from this list: send the line "unsubscribe linux-next" in
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    > More majordomo info at http://vger.kernel.org/majordomo-info.html

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