1 Copyright (c) 2009-2012 Bitcoin Developers
2 Copyright (c) 2013 NovaCoin Developers
3 Distributed under the MIT/X11 software license, see the accompanying
4 file license.txt or http://www.opensource.org/licenses/mit-license.php.
5 This product includes software developed by the OpenSSL Project for use in
6 the OpenSSL Toolkit (http://www.openssl.org/). This product includes
7 cryptographic software written by Eric Young (eay@cryptsoft.com).
17 make -f makefile.unix # Headless novacoin
19 See readme-qt.rst for instructions on building NovaCoin QT,
20 the graphical novacoin.
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 libqrencode QRCode generation Optional QRCode generation
32 Note that libexecinfo should be installed, if you building under *BSD systems.
33 This library provides backtrace facility.
35 libqrencode is used for QRCode image generation. It can be downloaded
36 from http://fukuchi.org/works/qrencode/index.html.en, or installed via
39 Licenses of statically linked libraries:
40 Berkeley DB New BSD license with additional requirement that linked
41 software must be free open source
42 Boost MIT-like license
44 Versions used in this release:
50 Dependency Build Instructions: Ubuntu & Debian
51 ----------------------------------------------
52 sudo apt-get install build-essential
53 sudo apt-get install libssl-dev
54 sudo apt-get install libdb4.8-dev
55 sudo apt-get install libdb4.8++-dev
56 Boost 1.40+: sudo apt-get install libboost-all-dev
57 or Boost 1.37: sudo apt-get install libboost1.37-dev
58 sudo apt-get install libqrencode-dev
60 If using Boost 1.37, append -mt to the boost libraries in the makefile.
63 Dependency Build Instructions: Gentoo
64 -------------------------------------
66 Note: If you just want to install novacoind on Gentoo, you can add the Novacoin
67 overlay and use your package manager:
68 layman -a novacoin && emerge novacoind
70 emerge -av1 --noreplace boost glib openssl sys-libs/db:4.8
72 Take the following steps to build:
73 cd ${NOVACOIN_DIR}/src
74 make -f makefile.unix BDB_INCLUDE_PATH='/usr/include/db4.8'
80 The release is built with GCC and then "strip novacoind" to strip the debug
81 symbols, which reduces the executable size by about 90%.
85 You need Berkeley DB 4.8. If you have to build Berkeley DB yourself:
86 ../dist/configure --enable-cxx
92 If you need to build Boost yourself:
100 To help make your novacoin installation more secure by making certain attacks impossible to
101 exploit even if a vulnerability is found, you can take the following measures:
103 * Position Independent Executable
104 Build position independent code to take advantage of Address Space Layout Randomization
105 offered by some kernels. An attacker who is able to cause execution of code at an arbitrary
106 memory location is thwarted if he doesn't know where anything useful is located.
107 The stack and heap are randomly located by default but this allows the code section to be
108 randomly located as well.
110 On an Amd64 processor where a library was not compiled with -fPIC, this will cause an error
111 such as: "relocation R_X86_64_32 against `......' can not be used when making a shared object;"
113 To build with PIE, use:
114 make -f makefile.unix ... -e PIE=1
116 To test that you have built PIE executable, install scanelf, part of paxutils, and use:
117 scanelf -e ./novacoin
119 The output should contain:
123 * Non-executable Stack
124 If the stack is executable then trivial stack based buffer overflow exploits are possible if
125 vulnerable buffers are found. By default, novacoin should be built with a non-executable stack
126 but if one of the libraries it uses asks for an executable stack or someone makes a mistake
127 and uses a compiler extension which requires an executable stack, it will silently build an
128 executable without the non-executable stack protection.
130 To verify that the stack is non-executable after compiling use:
131 scanelf -e ./novacoin
133 the output should contain:
137 The STK RW- means that the stack is readable and writeable but not executable.