This page details instructions for compiling RawTherapee on Mac OS X systems. There are also separate pages with instructions for compiling on Linux and Windows. This guide details the what and how parts of compilation. For the why and explanations of these commands, for a list of dependencies, CMake options and other information, please refer to the detailed Linux article.

When in doubt, join us on IRC and ask a human!

For instructions on cloning the source, choosing branches, configuring CMake and doing the actual compilation, see these sections in the Linux guide. The information below is in addition to that.

1 Dependencies

See the list of dependencies in the Compiling in Linux article.

Additionally, you need these:

  • XCode Development Tools. You only need a subset of these, but it is probably easier to just install all of them.
  • MacPorts
  • Git
Install Git:
sudo port install git
  • Configure variants.conf
Add the following line to /opt/local/etc/macports/variants.conf:
+no_gnome +no_x11 +quartz -x11
  • Dependencies
To install the dependencies, run:
sudo port install cairo clang-3.7 +openmp cmake fftw-3-single gdk-pixbuf2 gtk2 gtk-engines2 gtkmm gtk-osx-application-gtk2 lcms2 libiptcdata libsigcxx2 pango
We recommend using the latest stable version of the Clang compiler with OpenMP support. Unstable versions are not recommended. The line above includes it.

1.1 libiconv patch

libiconv.2.dylib must be patched, otherwise RawTherapee will crash on startup. The patch is available in `tools/osx/libiconv_1.14_rt.patch`

libiconv patching and compilation instructions:

tar xf libiconv-1.14.tar.gz
cd libiconv-1.14
patch -p1 < libiconv_1.14_rt.patch
mkdir build
cd build
../configure --prefix=/opt/local --disable-static 'CFLAGS=-arch x86_64 -mmacosx-version-min=10.5' 'LDFLAGS=-arch x86_64 -mmacosx-version-min=10.5' CXXFLAGS="-arch x86_64 -mmacosx-version-min=10.5"
make DESTDIR="$buildDir" install
cd /opt/local/lib
sudo cp ./libiconv.2.dylib ./libiconv.2.dylib.backup # backup MacPorts dylib
sudo cp "${buildDir}/opt/local/lib/libiconv.2.dylib" /opt/local/lib/libiconv.2.dylib

2 Compiling

See the Compiling in Linux article for instructions on how to clone the source code, choose a branch and how to configure CMake. Ignore the "Now you are ready to compile" code on that page and follow the code on this page.

If you want to upload a build or otherwise share it with others, you must use


and set the processor label manually by setting

-DPROC_LABEL="generic processor"

If you want to compile for yourself only, then use


and then the processor label would be irrelevant, you could skip it.

2.1 Compile RawTherapee

Now you are ready to compile:

cd ~/repo-rt
rm -rf build; make clean; ./clean
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE="release" \
      -DPROC_LABEL="generic processor" \
      -DCMAKE_C_COMPILER="clang-mp-3.7" \
      -DCMAKE_CXX_COMPILER="clang++-mp-3.7" \
      -DCMAKE_CXX_FLAGS="-w" \
make -j8 install
make macosx_bundle

2.2 Run and Share RawTherapee

You will find a disk image in the build directory; this is the distribution release and can be run on any machine which meets the architecture requirements you specified in variants.conf earlier.

To provide the RawTherapee project with your build, please zip the .dmg and AboutThisBuild.txt files together. Name the zip file according to this template:

RawTherapee_OSX_<OS X version>_64_<RawTherapee version and branch>.zip

for example if your build is made for OS X 10.11 and the version of RawTherapee is 4.2.789 and the branch is `gtk3`, name it:

Upload the zip archive to and open a new issue on our GitHub page with the link so that we can upload it to the website.