you can even screw the currect cpus and build your own :-D

i dont know about the dirstamp files, but empty folders are not added to git, maybe add an invisible file (with a dot as first char) into the dir and it should work

this should work, though my git created from your tarballs does not contain any dirstamps, they only seem to get created on compile (search in the git repo for dirstamp and you will find it in the Makefile.in)

I just pushed an update to git. This is not a full release. There are no algo changes so no binaries will be built.

https://github.com/JayDDee/cpuminer-opt

Changes in v3.4.8-dev:

- deleted some trash files
- deleted all .dirstamp files, I don't know where they came from but they seems to have stayed away.
- added non-empty m4 directory
- fixed API output of diff for cryptonight
- removed cpuminer-multi artifacts

Let me know of any problems

regarding windows compiles:

i have successfully gotten a build environment setup using the steps provided by nicehash, credit to them.

personal notes/walkthrough:

1) get the first three GNUStep packages noted and install in this order: msys,core,devel. The other three are not needed (just GUI stuff).

2) install win-builds as noted, for me the installer always failed to download the packages/info so i got it working with the steps mentioned here, that being:

• get the portable windows wget package
• run:

• use C:\winbuilddir\1.5.0 in the win-builds installer as http mirror

and select plain C:\GNUStep as install dir (not C:\GNUStep\msys or something as noted in the nicehash guide), press "OK", and "Process" on the next Page when the Packages show up.


3) after the win-builds install is finished just execute C:\GNUStep\msys\1.0\msys.bat, set the PATH to include "/c/GNUstep/msys/1.0/opt/windows_64/bin/" by either doing
in the cmd window (it does not support copy/paste) or creating a file with the following content:
and saving it as setPath.sh in C:\GNUstep\msys\1.0\home\USERNAME so you can easily execute it each time you want to build cpuminer-opt

Note: afaik it should also work by setting this in the windows system variables (permanently) so you dont need to enter/execute it each time, not tested though


4) now just change to your cpuminer-opt src and run winbuild.sh

Rather than march, try with -msse2

And old cryptonight miners will not work correctly on NiceHash - we had to add small protocol adjustment to be able to redistribute hashing power because cryptonight algo does not have extranonce. Besides that, these miners also send additional newlines (bug), which our implementation will not tolerate and would kill con.

I see no reason for an illegal instruction if you compiled for core2. Please post the miner console session.

ATHLON X II SUPPORTS SSE2--

But I am compiling under Linux, Lubuntu 14.04.  The miner builds when the "march=core2" flag is substituted for the "march=native" flag in the "build.sh" script.  However, it errors out when beginning to mine.

I've also been attempting to compile the NiceHash CCminer-CryptoNight miner in the same environment.  The build errors out immediately.  I sent a PM to your BitCoinTalk message box.  I've compiled miners for a couple years now, under Linux and occasionally Windows.  I just want to run "build.sh" and generate a good binary.

I'll post a console capture tomorrow.  If the NiceHash team has any suggestions about how to compile a good CPUMiner-OPT, or CCminer-CryptoNight, I am interested.  Posting Linux binaries for download would also be appreciated.       --scryptr

@scryptr
The correct commandline for building for your CPU Sempron 145 and Athlon X II is:

Try that and you will have your binary.
Personally I use that on my Phenom's and Sempron 145.

This commandline works flawlessly even on older AMD Athlon 64 X2 6000+ and 5000+

A SUCCESSFUL BUILD RESULTED!!! --

The following screen captures are easier to post than a pages-long compile log:

https://postimg.org/image/olsjajmyj/
Initial launch of CPUMiner-OPT 3.4.8-dev.

https://postimg.org/image/3lwnwwy77/
First accepts for CPUMiner-OPT 3.4.8-dev while mining CryptoNight at NiceHash.com.

Thank you very much for the compile scrypt.  I would appreciate a little explanation of the flags used.  After spending  several hours studying GCC flags for various CPU versions, and attempting to compile with different combinations, your help is a gift.

I am also trying to compile NiceHash's version of tsiv's CCminer for CryptoNight.  Perhaps their git repository is a bit skewed, tsiv's compiles with just "autogen.sh", "configure", and "make".

Thanks again!       --scryptr