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    Subject[PATCH v2 18/21] gcc-plugins: move GCC version check for PowerPC to Kconfig
    Date
    For PowerPC, GCC 5.2 is the requirement for GCC plugins.  Move the
    version check to Kconfig so that the GCC plugin menus will be hidden
    if an older compiler is in use.

    Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
    Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
    ---

    Changes in v2: None

    arch/powerpc/Kconfig | 2 +-
    scripts/Makefile.gcc-plugins | 8 --------
    2 files changed, 1 insertion(+), 9 deletions(-)

    diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
    index 73ce5dd..b8474c2 100644
    --- a/arch/powerpc/Kconfig
    +++ b/arch/powerpc/Kconfig
    @@ -195,7 +195,7 @@ config PPC
    select HAVE_FTRACE_MCOUNT_RECORD
    select HAVE_FUNCTION_GRAPH_TRACER
    select HAVE_FUNCTION_TRACER
    - select HAVE_GCC_PLUGINS
    + select HAVE_GCC_PLUGINS if GCC_VERSION >= 50200
    select HAVE_GENERIC_GUP
    select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
    select HAVE_IDE
    diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
    index b0f9108..25da4c0 100644
    --- a/scripts/Makefile.gcc-plugins
    +++ b/scripts/Makefile.gcc-plugins
    @@ -56,14 +56,6 @@ gcc-plugins-check: FORCE
    ifdef CONFIG_GCC_PLUGINS
    ifeq ($(PLUGINCC),)
    ifneq ($(GCC_PLUGINS_CFLAGS),)
    - # Various gccs between 4.5 and 5.1 have bugs on powerpc due to missing
    - # header files. gcc <= 4.6 doesn't work at all, gccs from 4.8 to 5.1 have
    - # issues with 64-bit targets.
    - ifeq ($(ARCH),powerpc)
    - ifeq ($(call cc-ifversion, -le, 0501, y), y)
    - @echo "Cannot use CONFIG_GCC_PLUGINS: plugin support on gcc <= 5.1 is buggy on powerpc, please upgrade to gcc 5.2 or newer" >&2 && exit 1
    - endif
    - endif
    $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error $(HOSTCXX) $(CC) || true
    @echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
    endif
    --
    2.7.4
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