linux-kernel - Re: [PATCH v7 4/6] Add Cyclomatic complexity GCC plugin

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Message-ID: <CAK7LNASxXirCzAQvj3Lz_0NC2k_yrLmYC+obzd=d9ZED6Xq6Sg@mail.gmail.com>
Date:	Mon, 2 May 2016 14:09:55 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	Emese Revfy <re.emese@...il.com>
Cc:	Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
	PaX Team <pageexec@...email.hu>,
	Brad Spengler <spender@...ecurity.net>,
	kernel-hardening@...ts.openwall.com,
	Michal Marek <mmarek@...e.com>,
	Kees Cook <keescook@...omium.org>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	David Brown <david.brown@...aro.org>
Subject: Re: [PATCH v7 4/6] Add Cyclomatic complexity GCC plugin

Hi Emese,


2016-04-23 3:24 GMT+09:00 Emese Revfy <re.emese@...il.com>:

> diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
> index e6d66e2..282d63a 100644
> --- a/scripts/Makefile.gcc-plugins
> +++ b/scripts/Makefile.gcc-plugins
> @@ -2,6 +2,8 @@ ifdef CONFIG_GCC_PLUGINS
>    __PLUGINCC := $(call cc-ifversion, -ge, 0408, $(HOSTCXX), $(HOSTCC))
>    PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)")
>
> +  gcc-plugin-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY)       += cyc_complexity_plugin.so
> +
>    GCC_PLUGINS_CFLAGS := $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y))
>
>    ifeq ($(PLUGINCC),)
> diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
> index b2d64af..31c72bf 100644
> --- a/scripts/gcc-plugins/Makefile
> +++ b/scripts/gcc-plugins/Makefile
> @@ -12,4 +12,8 @@ endif
>
>  export GCCPLUGINS_DIR HOSTLIBS
>
> +$(HOSTLIBS)-$(CONFIG_GCC_PLUGIN_CYC_COMPLEXITY) := cyc_complexity_plugin.so


I noticed we need to add the same string into "gcc-plugin-y" and "$(HOSTLIBS)-y"


Maybe can we do like this?

$(HOSTLIBS)-y := $(gcc-plugin-y)



>  always := $($(HOSTLIBS)-y)
> +
> +cyc_complexity_plugin-objs := cyc_complexity_plugin.o










-- 
Best Regards
Masahiro Yamada