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Cannot use CONFIG_CC_STACKPROTECTOR_STRONG error
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SxN
Apprentice
Apprentice


Joined: 08 Jan 2007
Posts: 165
Location: Toronto, ON, Canada

PostPosted: Sat Jun 20, 2015 5:13 pm    Post subject: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG error Reply with quote

Hi All,

Trying to build a hardened kernel, and getting the following:

Code:
Makefile:732: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong not supported by compiler
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
  CC      kernel/bounds.s
gcc: error: unrecognized command line option '-fstack-protector-strong'
Kbuild:35: recipe for target 'kernel/bounds.s' failed
make[1]: *** [kernel/bounds.s] Error 1
Makefile:1052: recipe for target 'prepare0' failed
make: *** [prepare0] Error 2


How can I fix it?

Thanks,
SxN
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eccerr0r
Watchman
Watchman


Joined: 01 Jul 2004
Posts: 7134
Location: almost Mile High in the USA

PostPosted: Sat Jun 20, 2015 5:37 pm    Post subject: Reply with quote

What version of gcc are you using (gcc --version) ... Try a newer version perhaps? Looks like it's new in gcc-4.9 ...
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SxN
Apprentice
Apprentice


Joined: 08 Jan 2007
Posts: 165
Location: Toronto, ON, Canada

PostPosted: Sat Jun 20, 2015 6:11 pm    Post subject: Reply with quote

I thought of the gcc version too, so I did the followings:

Code:
emerge --sync
emerge gcc

gcc --version
gcc (Gentoo Hardened 4.8.4 p1.5, pie-0.6.1) 4.8.4


I wasn't aware that I have to go up to 4.9, maybe I should try and install that version before compiling.

(I also updated make to 4.1)

SxN
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