Collate generic dependency information. Segregate distribution-specific (Ubuntu/Debian) information. Add Gentoo information.

doc/build-unix.txt

@@ -22,24 +22,24 @@ the graphical bitcoin.
 
 Dependencies
 ------------
-sudo apt-get install build-essential
-sudo apt-get install libssl-dev
-sudo apt-get install libdb4.8-dev
-sudo apt-get install libdb4.8++-dev
-Boost 1.40+: sudo apt-get install libboost-all-dev
-or Boost 1.37: sudo apt-get install libboost1.37-dev
 
-If using Boost 1.37, append -mt to the boost libraries in the makefile.
+ Library    Purpose       Description
+ -------    -------       -----------
+ libssl     SSL Support   Secure communications
+ libdb4.8   Berkeley DB   Blockchain & wallet storage
+ libboost   Boost         C++ Library
+ miinupnpc  UPnP Support  Optional firewall-jumping support
 
-Requires miniupnpc for UPnP port mapping.  It can be downloaded from
+miniupnpc may be used for UPnP port mapping.  It can be downloaded from
 http://miniupnp.tuxfamily.org/files/.  UPnP support is compiled in and
 turned off by default.  Set USE_UPNP to a different value to control this:
-USE_UPNP=   no UPnP support, miniupnp not required;
-USE_UPNP=0  (the default) UPnP support turned off by default at runtime;
-USE_UPNP=1  UPnP support turned on by default at runtime.
+ USE_UPNP=     No UPnP support - miniupnp not required
+ USE_UPNP=0    (the default) UPnP support turned off by default at runtime
+ USE_UPNP=1    UPnP support turned on by default at runtime
 
 Licenses of statically linked libraries:
-Berkeley DB    New BSD license with additional requirement that linked software must be free open source
+ Berkeley DB   New BSD license with additional requirement that linked
+               software must be free open source
  Boost         MIT-like license
  miniupnpc     New (3-clause) BSD license
 
@@ -51,9 +51,33 @@ Boost        1.37
  miniupnpc     1.6
 
 
+Dependency Build Instructions: Ubuntu & Debian
+----------------------------------------------
+sudo apt-get install build-essential
+sudo apt-get install libssl-dev
+sudo apt-get install libdb4.8-dev
+sudo apt-get install libdb4.8++-dev
+ Boost 1.40+: sudo apt-get install libboost-all-dev
+ or Boost 1.37: sudo apt-get install libboost1.37-dev
+
+If using Boost 1.37, append -mt to the boost libraries in the makefile.
+
+
+Dependency Build Instructions: Gentoo
+-------------------------------------
+emerge -av net-libs/miniupnpc boost openssl sys-libs/db
+
+Then take the following steps to build:
+ cd $BITCOIN_DIR/src
+ sed -i 's/<db_cxx.h>/<db4.8\/db_cxx.h>/' src/*
+ sed -i 's/-Bstatic/-Bdynamic/' makefile.unix
+ make -f makefile.unix
+ strip bitcoind
+
+
 Notes
 -----
-The release is built with GCC and then "strip bitcoin" to strip the debug
+The release is built with GCC and then "strip bitcoind" to strip the debug
 symbols, which reduces the executable size by about 90%.