[tor-bugs] #9699 [Tor]: tor curve25519 fail

[Tor Bug Tracker & Wiki]

#9699: tor curve25519 fail
-----------------------------+------------------------------
     Reporter:  cypherpunks  |      Owner:
         Type:  defect       |     Status:  new
     Priority:  normal       |  Milestone:  Tor: unspecified
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  tor-client
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+------------------------------

Comment (by tmpname0901):

 I had no problems building curve25519-donna-c64 on multiple CentOS 5.9
 (x86_64) systems.

 I'll take a stab at guessing what is different between your environment
 and mine:  I'm building with gcc44, not the default CentOS5 GCC 4.1.x
 development tools.

 Do this to install the newer devel tools:

     yum -y install gcc44 gcc44-c++ binutils220

 Then specify gcc44 as your compiler:

     export CC=gcc44
     export CXX=g++44

 and CPU type of "native":

     CFLAGS='-O2 -g -march=native -mno-avx"
     CFLAGS='-O2 -g -march=native -mno-avx"

 The CPU type referred to above is optional.  GCC will attempt to optimize
 the code to match the capabilities of your CPU.  This doesn't work in a
 KVM VPS, but it is generally a Good Thing.  The "-mno-avx" is because the
 assembler doesn't understand the AVX instruction set.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9699#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online