nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images. nomacs is licensed under the GNU General Public License v3 and available for Windows, Linux, FreeBSD, Mac, and OS/2.

• Qt SDK or the compiled sources (>= 5.2.1)
• Exiv2 (>= 0.25)
• OpenCV (>= 2.4.6) optional
• LibRaw (>= 0.17) optional

• only needed if ENABLE_RAW is checked_
• open LibRaw-0.xx.0/LibRaw-nomacs-2015.sln
• build LibRaw (Debug & Release)

1. Open CMake GUI
2. set your ImageLounge folder to where is the source code
3. choose a build folder
4. Set QT_QMAKE_EXECUTABLE by locating the qmake.exe
5. Set OpenCV_DIR to your OpenCV build folder
6. Hit Configurethen Generate
7. Open the nomacs.sln which is in your new build directory
8. Right-click the nomacs project and choose Set as StartUp Project
9. Compile the Solution

• check if you have setup opencv (otherwise uncheck ENABLE_RAW)
• check if your Qt is set correctly (otherwise set the path to qt_install_dir/qtbase/bin/qmake.exe)
• check if your builds proceeded correctly

Get the required packages:

sudo apt-get install debhelper cdbs qt5-qmake qttools5-dev-tools qt5-default qttools5-dev libqt5svg5-dev qt5-image-formats-plugins libexiv2-dev libraw-dev libopencv-dev cmake libtiff-dev libquazip-dev libwebp-dev git build-essential

Get the nomacs sources from github:

git clone https://github.com/nomacs/nomacs.git

This will by default place the source into ~/nomacs

Go to the nomacs/ImageLounge directory and run cmake to get the Makefiles:

cmake .

Compile nomacs:

make

You will now have a binary (~/nomacs/nomacs), which you can test (or use directly). To install it to /usr/local/bin, use:

sudo make install

Install Homebrew for easier installation of depenedencies.

Install required dependencies:

$ brew install qt5 exiv2 homebrew/science/opencv libraw quazip

Go to the nomacs directory and run cmake to get the Makefiles

$ mkdir build
$ cd build
$ Qt5_DIR=/usr/local/opt/qt5/ cmake ../ImageLounge/.

Run make:

$ make

You will now have a binary (nomacs.app), which you can test (or use directly). To install it to /usr/local/bin, use

$ sudo make install

• nomacs.org
• Bugtracker
• GitHub