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Message-Id: <1523595999-27433-27-git-send-email-yamada.masahiro@socionext.com> Date: Fri, 13 Apr 2018 14:06:35 +0900 From: Masahiro Yamada <yamada.masahiro@...ionext.com> To: linux-kbuild@...r.kernel.org Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Sam Ravnborg <sam@...nborg.org>, Ulf Magnusson <ulfalizer@...il.com>, Nicholas Piggin <npiggin@...il.com>, Kees Cook <keescook@...omium.org>, Emese Revfy <re.emese@...il.com>, x86@...nel.org, Masahiro Yamada <yamada.masahiro@...ionext.com>, linux-kernel@...r.kernel.org Subject: [PATCH 26/30] gcc-plugins: move GCC version check for PowerPC to Kconfig 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@...ionext.com> Acked-by: Andrew Donnellan <andrew.donnellan@....ibm.com> --- Changes in v3: - Move comment to Kconfig as well 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..512fcc1 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 # plugin support on gcc <= 5.1 is buggy on PPC 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 0ce3802..1e92353 100644 --- a/scripts/Makefile.gcc-plugins +++ b/scripts/Makefile.gcc-plugins @@ -53,14 +53,6 @@ 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 ifeq ($(call cc-ifversion, -ge, 0405, y), y) $(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(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 -- 2.7.4
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