CPUMiner+

CPUMiner+ is a multi-threaded CPU mining application for Bitcoin based cryptocurrencies.

It currently supports 4 different hashing algorithm schemes, SHA256D, Scrypt, Skein, and Quark.

Future plans for the program involve adding Scrypt-Jane, and possibly even Prime hashing support.

CPUMiner+ is released under the GNU General Public License v2. See COPYING for details.

Building CPUMiner+

#####Dependencies:

• libcurl http://curl.haxx.se/libcurl/
• jansson http://www.digip.org/jansson/ (jansson is included in-tree)

 

####Basic *nix build instructions:

./autogen.sh	# only needed if building from git repo
./nomacro.pl	# only needed if building on Mac OS X or with Clang
./configure CFLAGS="-O3"
make

Notes for AIX users:

• To build a 64-bit binary, export OBJECT_MODE=64
• GNU-style long options are not supported, but are accessible via configuration file

 

####Basic Windows build instructions, using MinGW:

• Install MinGW and the MSYS Developer Tool Kit (http://www.mingw.org/)
  • Make sure you have mstcpip.h in MinGW\include
• If using MinGW-w64, install pthreads-w64
• Install libcurl devel (http://curl.haxx.se/download.html)
  • Make sure you have libcurl.m4 in MinGW\share\aclocal
  • Make sure you have curl-config in MinGW\bin
• In the MSYS shell, run:

./autogen.sh	# only needed if building from git repo
LIBCURL="-lcurldll" ./configure CFLAGS="-O3"
make

 

####Architecture-specific notes:

• ARM: No runtime CPU detection. The miner can take advantage of some instructions specific to ARMv5E and later processors, but the decision whether to use them is made at compile time, based on compiler-defined macros.
  • To use NEON instructions, add -mfpu=neon to CFLAGS.
• x86: The miner checks for SSE2 instructions support at runtime and uses them if they are available.
• x86-64: The miner can take advantage of AVX, AVX2 and XOP instructions, but only if both the CPU and the operating system support them.
  • Linux supports AVX starting from kernel version 2.6.30.
  • FreeBSD supports AVX starting with 9.1-RELEASE.
  • Mac OS X added AVX support in the 10.6.8 update.
  • Windows supports AVX starting from Windows 7 SP1 and Windows Server 2008 R2 SP1.

The configure script outputs a warning if the assembler doesn't support some instruction sets. In that case, the miner can still be built, but unavailable optimizations are left off.

 

Usage Instructions

Run minerd --help to see options.

####Connecting through a proxy:
Use the --proxy option.

To use a SOCKS proxy, add a socks4:// or socks5:// prefix to the proxy host.

Protocols socks4a and socks5h, allowing remote name resolving, are also available since libcurl 7.18.0.

If no protocol is specified, the proxy is assumed to be a HTTP proxy.

When the --proxy option is not used, the program honours the http_proxy and all_proxy environment variables.