linux-kernel - Re: [RFC PATCH 4/7] kconfig: support new special property shell=

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <246fedb8-d387-5a77-f05d-bf8a91dd6b22@infradead.org>
Date:   Sat, 10 Feb 2018 10:05:12 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Ulf Magnusson <ulfalizer@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        "Luis R . Rodriguez" <mcgrof@...e.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Pavel Machek <pavel@....cz>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Jiri Kosina <jkosina@...e.cz>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 4/7] kconfig: support new special property shell=

On 02/10/2018 12:55 AM, Ulf Magnusson wrote:
> How many compilers don't support -fno-stack-protector by the way?
> 
> 	config CC_HAS_STACKPROTECTOR_STRONG
> 		bool
> 		option shell="$CC -Werror -fstack-protector-strong -c -x c /dev/null"
> 	
> 	config CC_HAS_STACKPROTECTOR_REGULAR
> 		bool
> 		option shell="$CC -Werror -fstack-protector -c -x c /dev/null"
> 	
> 	config CC_HAS_STACKPROTECTOR_NONE
> 		bool
> 		default y
> 		option shell="$CC -Werror -fno-stack-protector -c -x c /dev/null"

I ran:
gcc -Werror -fno-stack-protector -c -x c /dev/null

It worked (gcc (SUSE Linux) 4.8.5) but it did leave a null.o file for me.
Might need to add that to 'make clean' or just rm it immediately.


-- 
~Randy