1 Copyright (c) 2009-2012 Bitcoin Developers
2 Distributed under the MIT/X11 software license, see the accompanying
3 file license.txt or http://www.opensource.org/licenses/mit-license.php.
4 This product includes software developed by the OpenSSL Project for use in
5 the OpenSSL Toolkit (http://www.openssl.org/). This product includes
6 cryptographic software written by Eric Young (eay@cryptsoft.com) and UPnP
7 software written by Thomas Bernard.
17 make -f makefile.unix # Headless bitcoin
19 See readme-qt.rst for instructions on building Bitcoin QT,
20 the graphical bitcoin.
25 Library Purpose Description
26 ------- ------- -----------
27 libssl SSL Support Secure communications
28 libdb4.8 Berkeley DB Blockchain & wallet storage
29 libboost Boost C++ Library
30 miniupnpc UPnP Support Optional firewall-jumping support
31 libqrencode QRCode generation Optional QRCode generation
33 Note that libexecinfo should be installed, if you building under *BSD systems.
34 This library provides backtrace facility.
36 miniupnpc may be used for UPnP port mapping. It can be downloaded from
37 http://miniupnp.tuxfamily.org/files/. UPnP support is compiled in and
38 turned off by default. Set USE_UPNP to a different value to control this:
39 USE_UPNP=- No UPnP support - miniupnp not required
40 USE_UPNP=0 (the default) UPnP support turned off by default at runtime
41 USE_UPNP=1 UPnP support turned on by default at runtime
43 libqrencode may be used for QRCode image generation. It can be downloaded
44 from http://fukuchi.org/works/qrencode/index.html.en, or installed via
45 your package manager. Set USE_QRCODE to control this:
46 USE_QRCODE=0 (the default) No QRCode support - libqrcode not required
47 USE_QRCODE=1 QRCode support enabled
49 Licenses of statically linked libraries:
50 Berkeley DB New BSD license with additional requirement that linked
51 software must be free open source
52 Boost MIT-like license
53 miniupnpc New (3-clause) BSD license
55 Versions used in this release:
62 Dependency Build Instructions: Ubuntu & Debian
63 ----------------------------------------------
64 sudo apt-get install build-essential
65 sudo apt-get install libssl-dev
66 sudo apt-get install libdb4.8-dev
67 sudo apt-get install libdb4.8++-dev
68 Boost 1.40+: sudo apt-get install libboost-all-dev
69 or Boost 1.37: sudo apt-get install libboost1.37-dev
70 sudo apt-get install libqrencode-dev
72 If using Boost 1.37, append -mt to the boost libraries in the makefile.
75 Dependency Build Instructions: Gentoo
76 -------------------------------------
78 Note: If you just want to install bitcoind on Gentoo, you can add the Bitcoin
79 overlay and use your package manager:
80 layman -a bitcoin && emerge bitcoind
82 emerge -av1 --noreplace boost glib openssl sys-libs/db:4.8
84 Take the following steps to build (no UPnP support):
86 make -f makefile.unix USE_UPNP= BDB_INCLUDE_PATH='/usr/include/db4.8'
92 The release is built with GCC and then "strip bitcoind" to strip the debug
93 symbols, which reduces the executable size by about 90%.
98 tar -xzvf miniupnpc-1.6.tar.gz
107 You need Berkeley DB 4.8. If you have to build Berkeley DB yourself:
108 ../dist/configure --enable-cxx
114 If you need to build Boost yourself:
122 To help make your bitcoin installation more secure by making certain attacks impossible to
123 exploit even if a vulnerability is found, you can take the following measures:
125 * Position Independent Executable
126 Build position independent code to take advantage of Address Space Layout Randomization
127 offered by some kernels. An attacker who is able to cause execution of code at an arbitrary
128 memory location is thwarted if he doesn't know where anything useful is located.
129 The stack and heap are randomly located by default but this allows the code section to be
130 randomly located as well.
132 On an Amd64 processor where a library was not compiled with -fPIC, this will cause an error
133 such as: "relocation R_X86_64_32 against `......' can not be used when making a shared object;"
135 To build with PIE, use:
136 make -f makefile.unix ... -e PIE=1
138 To test that you have built PIE executable, install scanelf, part of paxutils, and use:
141 The output should contain:
145 * Non-executable Stack
146 If the stack is executable then trivial stack based buffer overflow exploits are possible if
147 vulnerable buffers are found. By default, bitcoin should be built with a non-executable stack
148 but if one of the libraries it uses asks for an executable stack or someone makes a mistake
149 and uses a compiler extension which requires an executable stack, it will silently build an
150 executable without the non-executable stack protection.
152 To verify that the stack is non-executable after compiling use:
155 the output should contain:
159 The STK RW- means that the stack is readable and writeable but not executable.