Be sure to clone the repository properly:
$ git clone --recursive https://github.com/hyle-team/zano.git

Note:
[server version] denotes steps required for building command-line tools (daemon, simplewallet, etc.).
[GUI version] denotes steps required for building Zano executable with GUI.

Recommended OS version: Ubuntu 18.04 LTS.

1. Prerequisites

   [server version]

   sudo apt-get install -y build-essential g++ python-dev autotools-dev libicu-dev libbz2-dev cmake git screen
   

   [GUI version]

   sudo apt-get install -y build-essential g++ python-dev autotools-dev libicu-dev libbz2-dev cmake git screen mesa-common-dev libglu1-mesa-dev
   

2. Download and build Boost

   wget https://boostorg.jfrog.io/artifactory/main/release/1.68.0/source/boost_1_68_0.tar.bz2
   tar -xjf boost_1_68_0.tar.bz2
   cd boost_1_68_0
   ./bootstrap.sh --with-libraries=system,filesystem,thread,date_time,chrono,regex,serialization,atomic,program_options,locale,timer
   ./b2
   

3. Install Qt
   (GUI version only, skip this step if you're building server version)

   [GUI version]

   wget https://download.qt.io/new_archive/qt/5.11/5.11.2/qt-opensource-linux-x64-5.11.2.run
   chmod +x qt-opensource-linux-x64-5.11.2.run
   ./qt-opensource-linux-x64-5.11.2.run
   

   Then follow the instructions in Wizard. Don't forget to tick the WebEngine module checkbox!

4. Set environment variables properly
   For instance, by adding the following lines to ~/.bashrc

   [server version]

   export BOOST_ROOT=/home/user/boost_1_68_0  
   

   [GUI version]

   export BOOST_ROOT=/home/user/boost_1_68_0  
   export QT_PREFIX_PATH=/home/user/Qt5.11.2/5.11.2/gcc_64
   

5. Building binaries

   1. Building daemon and simplewallet:

      cd zano/ && make -j1
      

      or

      cd zano && mkdir build && cd build
      cmake ..
      make -j1 daemon simplewallet
      

      NOTICE: If you are building on a machine with a relatively high amount of RAM or with the proper setting of virtual memory, then you can use -j2 or -j option to speed up the building process. Use with caution.

      NOTICE 2: If you'd like to build binaries for the testnet, use cmake -D TESTNET=TRUE .. instead of cmake .. .

   2. Building GUI:

      cd zano
      utils/build_sript_linux.sh
      

6. Look for the binaries in build folder

Recommended OS version: Windows 7 x64.

1. Install required prerequisites (Boost, Qt, CMake).
2. Edit paths in utils/configure_local_paths.cmd.
3. Run utils/configure_win64_msvs2015_gui.cmd or utils/configure_win64_msvs2017_gui.cmd according to your MSVC version.
4. Go to the build folder and open generated Zano.sln in MSVC.
5. Build.

In order to correctly deploy Qt GUI application, you also need to do the following:

6. Copy Zano.exe to a folder (e.g. depoy).
7. Run PATH_TO_QT\bin\windeployqt.exe deploy\Zano.exe.
8. Copy folder \src\gui\qt-daemon\html to deploy\html.
9. Now you can run Zano.exe

Recommended OS version: macOS Sierra 10.15.4 x64.

1. Install required prerequisites.
2. Set environment variables as stated in utils/macosx_build_config.command.
3. mkdir build
cd build
cmake ..
make

To build GUI application:

1. Create self-signing certificate via Keychain Access:
   a. Run Keychain Access.
   b. Choose Keychain Access > Certificate Assistant > Create a Certificate.
   c. Use “Zano” (without quotes) as certificate name.
   d. Choose “Code Signing” in “Certificate Type” field.
   e. Press “Create”, then “Done”.
   f. Make sure the certificate was added to keychain "System". If not—move it to "System".
   g. Double click the certificate you've just added, enter the trust section and under "When using this certificate" select "Always trust".
   h. Unfold the certificate in Keychain Access window and double click the underlying private key "Zano". Select "Access Control" tab, then select "Allow all applications to access this item". Click "Save Changes".
2. Revise building script, comment out unwanted steps and run it: utils/build_script_mac_osx.sh
3. The application should be here: /buid_mac_osx_64/release/src