Improve Readme.md about compiling

Reparagraph, add an example how to compile on Unix-like systems

closes https://github.com/official-stockfish/Stockfish/pull/2724

No functional change

diff --git a/Readme.md b/Readme.md
index 35ff095d6792857cc8db58ba84c734aaeba52644..2b1de86be655775c6514257a05c6ea561c7c52b7 100644 (file)
--- a/Readme.md
+++ b/Readme.md
@@ -165,17 +165,23 @@ are in use, see the engine log.
 
 ## Compiling Stockfish yourself from the sources
 
-On Unix-like systems, it should be possible to compile Stockfish
-directly from the source code with the included Makefile.
+Stockfish has support for 32 or 64-bit CPUs, certain hardware
+instructions, big-endian machines such as Power PC, and other platforms.
 
-Stockfish has support for 32 or 64-bit CPUs, the hardware POPCNT
-instruction, big-endian machines such as Power PC, and other platforms.
+On Unix-like systems, it should be easy to compile Stockfish
+directly from the source code with the included Makefile in the folder
+`src`. In general it is recommended to run `make help` to see a list of make
+targets with corresponding descriptions.
 
-In general it is recommended to run `make help` to see a list of make
-targets with corresponding descriptions. When not using the Makefile to
-compile (for instance with Microsoft MSVC) you need to manually
-set/unset some switches in the compiler command line; see file *types.h*
-for a quick reference.
+```
+    cd src
+    make help
+    make build ARCH=x86-64-modern
+```
+
+When not using the Makefile to compile (for instance with Microsoft MSVC) you
+need to manually set/unset some switches in the compiler command line; see
+file *types.h* for a quick reference.
 
 When reporting an issue or a bug, please tell us which version and
 compiler you used to create your executable. These informations can