Re: [FYI] Need to do a full rebuild if you are on Linux x86 host

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 11/22/2011 10:41 AM, Gerd Hoffmann wrote:
On 11/22/11 01:25, Anthony Liguori wrote:
Due to this commit:

commit 40d6444e91c6ab17e5e8ab01d4eece90cbc4afed
Author: Avi Kivity<avi@xxxxxxxxxx>
Date:   Tue Nov 15 20:12:17 2011 +0200

     configure: build position independent executables on x86-Linux hosts

PIE binaries cannot be linked with non-PIE binaries and make is not
smart enough to rebuild when the CFLAGS have changed.

Breaks build on RHEL-5 and probably also other not-so-recent linux distros.

[ ... ]
   CC    i386-softmmu/exec.o
[ ... ]
   LINK  i386-softmmu/qemu-system-i386
/usr/bin/ld: exec.o: relocation R_X86_64_TPOFF32 against
`tls__cpu_single_env' can not be used when making a shared object;
recompile with -fPIC
exec.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
make[1]: *** [qemu-system-i386] Error 1
make: *** [subdir-i386-softmmu] Error 2

It can be worked around by replacing "-fpie" with "-fpic" or (to avoid a rather bad performance degradation) "-fpic -ftls-model=initial-exec" but it's a bug in the linker and it should be fixed in RHEL:

http://sourceware.org/bugzilla/show_bug.cgi?id=10434 (upstream BZ)
https://bugzilla.redhat.com/show_bug.cgi?id=755872 (RHEL BZ)

Paolo
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux