Bug 344711

Summary:	hardened-sources-2.6.36 (PAX) has a bad binutils test during compilation
Product:	Gentoo Linux	Reporter:	7v5w7go9ub0o <7v5w7go9ub0o>
Component:	New packages	Assignee:	The Gentoo Linux Hardened Kernel Team (OBSOLETE) <hardened-kernel+disabled>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	.config and emerge --info files. thanks.

Description 7v5w7go9ub0o 2010-11-08 18:15:10 UTC

/usr/src/linux-2.6.36-hardened/arch/x86/Makefile:81: stack protector enabled but no compiler support
make: ngcc: Command not found
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
/usr/src/linux-2.6.36-hardened/arch/x86/Makefile:202: *** 
*** 2.6 PaX kernels no longer build correctly with old versions of binutils.
*** Please upgrade your binutils to 2.18 or newer.  Stop.

I had this failure with both binutils 2.20.1-r1 and 2.18-r3

(eix -i binutils:  2.20.1-r1(13:03:57 11/08/10)(-multislot -multitarget -nls -test -vanilla) )

Reproducible: Always

Comment 1 Anthony Basile gentoo-dev

2010-11-16 00:24:47 UTC

Can you post your kernel config file.

Comment 2 Anthony Basile gentoo-dev

2010-11-16 01:00:24 UTC

(In reply to comment #1)
> Can you post your kernel config file.
> 

Actually, now that I think of it, I'd better see your emerge --info too.

Comment 3 7v5w7go9ub0o 2010-11-16 22:11:52 UTC

Created attachment 254553 [details]
.config and emerge --info files. thanks.


Here 'tis, as an attachment.

It has happened again with r1. THANKS for looking into this.

(p.s. I'm pretty much a newbie; if you notice anything questionable, PLEASE ask or comment)

Comment 4 Anthony Basile gentoo-dev

2010-11-17 00:46:35 UTC

Okay a couple of things:

1) your problem is happing because you have CONFIG_CROSS_COMPILE=n.  I should be #CONFIG_CROSS_COMPILE not set.  That's adding the n in front of gcc which makes it fail: make: ngcc: Command not found.  The problem has nothing to do with hardening.

This was also hit in bug #345417.

2) Unrelated to the bug but a problem on your system.  If your using the hardened profile, you should emerge the stable gcc which is currently gcc-4.4.4-r2 and use gcc-config to choose the default compiler, x86_64-pc-linux-gnu-4.4.4.  Make sure to emerge -e world with that compiler to get full hardening.


*** This bug has been marked as a duplicate of bug 345417 ***

Comment 5 7v5w7go9ub0o 2010-11-17 02:14:58 UTC

Yep.......  vim .config; change CONFIG_CROSS_COMPILE="" fixed it.  

The PAX comment made me think it was hardened; now I guess that is where it was when it came across the ngcc.

Thanks for your quick reply; thanks for the comments about gcc version!