native compile by default

- add CMake flag `XMRSTAK_COMPILE` to select `native` or `static` compile
- add new flags to the documentation

CMakeLists.txt

@@ -39,6 +39,17 @@ set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "${BUILD_TYPE}")
 set(XMR-STAK_CURRENCY "all" CACHE STRING "select miner currency")
 set_property(CACHE XMR-STAK_CURRENCY PROPERTY STRINGS "all;monero;aeon")
 
+if(NOT CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+    set(XMR-STAK_COMPILE "native" CACHE STRING "select CPU compute architecture")
+    set_property(CACHE XMR-STAK_COMPILE PROPERTY STRINGS "native;generic")
+    if("${XMR-STAK_COMPILE}" STREQUAL "native")
+        set(CMAKE_CXX_FLAGS "-march=native -mtune=native ${CMAKE_CXX_FLAGS}")
+        set(CMAKE_C_FLAGS "-march=native -mtune=native ${CMAKE_C_FLAGS}")
+    elseif(NOT "${XMR-STAK_COMPILE}" STREQUAL "generic")
+        message(FATAL_ERROR "XMR-STAK_COMPILE is set to an unknown value '${XMR-STAK_COMPILE}'")
+    endif()
+endif()
+
 if("${XMR-STAK_CURRENCY}" STREQUAL "all")
     message(STATUS "Set miner currency to 'monero' and 'aeon'")
 elseif("${XMR-STAK_CURRENCY}" STREQUAL "aeon")

doc/compile.md

@@ -37,6 +37,7 @@ After the configuration you need to compile the miner, follow the guide for your
   - you can find the binary and the `config.txt` file after `make install` in `$HOME/xmr-stak-cpu/bin`
 - `CMAKE_LINK_STATIC` link libgcc and libstdc++ libraries static (default OFF)
   - disable with `cmake .. -DCMAKE_LINK_STATIC=ON`
+  - if you use static compile to run the miner on another system set `-DXMR-STAK_COMPILE=generic` (only available for LINUX, BSD and MacOSX)
 - `CMAKE_BUILD_TYPE` set the build type
   - valid options: `Release` or `Debug`
   - you should always keep `Release` for your productive miners
@@ -44,10 +45,17 @@ After the configuration you need to compile the miner, follow the guide for your
   - there is no *http* interface available if option is disabled: `cmake .. -DMICROHTTPD_ENABLE=OFF`
 - `OpenSSL_ENABLE` allow to disable/enable the dependency *OpenSSL*
   - it is not possible to connect to a *https* secured pool if option is disabled: `cmake .. -DOpenSSL_ENABLE=OFF`
+- `XMR-STAK_CURRENCY` - compile for Monero(XMR) or Aeon(AEON) usage only e.g. `cmake .. -DXMR-STAK_CURRENCY=monero`
+
+### only available for LINUX, BSD and MacOSX
+- `XMR-STAK_COMPILE` select the CPU compute architecture (default: native)
+  - native means the miner binary can be used only on the system where it is compiled but will archive the highest hash rate
+  - use `cmake .. -DXMR-STAK_COMPILE=generic` to run the miner on all CPU's with sse2
+
+### only available for Windows
 - `WIN_UAC` will enable or disable the "Run As Administrator" prompt on Windows.
   - UAC confirmation is needed to use large pages on Windows 7.
   - On Windows 10 it is only needed once to set up the account to use them.
-- `XMR-STAK_CURRENCY` - compile for Monero(XMR) or Aeon(AEON) usage only e.g. `cmake .. -DXMR-STAK_CURRENCY=monero`
 
 ## CPU Build Options
 

doc/compile_Linux.md

@@ -69,9 +69,9 @@
 - g++ version 5.1 or higher is required for full C++11 support. 
 If you want to compile the binary without installing libraries / compiler or just compile binary for some other distribution, please check the [build_xmr-stak_docker.sh script](scripts/build_xmr-stak_docker/build_xmr-stak_docker.sh).
 
-### To do a static build for a system without gcc 5.1+
+### To do a generic and static build for a system without gcc 5.1+
 ```
-    cmake -DCMAKE_LINK_STATIC=ON .
+    cmake -DCMAKE_LINK_STATIC=ON -DXMR-STAK_COMPILE=generic .
     make install
 ```
 Note - cmake caches variables, so if you want to do a dynamic build later you need to specify '-DCMAKE_LINK_STATIC=OFF'