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Welcome to ARTS.
ARTS is free software. Please see the file COPYING for details.
If you use data generated by ARTS in a scientific
publication, then please mention this and cite the most
appropriate of the ARTS publications that are summarized on
http://www.radiativetransfer.org/docs/
For documentation, please see the files in the doc subdirectory.
For building and installation instructions please read below.
BUILDING ARTS
=============
Build Prerequisites:
gcc/g++ (or llvm/clang)
cmake (>=2.8.3)
zlib
netcdf (optional)
To build the documentation you also need:
pdflatex (optional)
doxygen (optional)
graphviz (optional)
USING CMAKE
===========
Here are the steps to use cmake to build ARTS.
Go into the build directory in the arts directory and run:
cd build
cmake ..
make
If you only want to build the arts executable you can just run 'make arts'
instead of 'make'.
If you have a multi-core processor or multiprocessor machine, don't forget
to use the -j option to speed up the compilation:
make -jX
Where X is the number of parallel build processes.
X=(Number of Cores)+1 gives you usually the fastest compilation time.
BUILD TYPES
===========
To build a release version without assertions or debugging symbols use:
cmake -DCMAKE_BUILD_TYPE=Release ..
make clean
make
To switch back to the debug version use:
cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo ..
make clean
make
This is also the default configuration if you run cmake without
options in an empty build directory.
TESTS
=====
'make check' will run several test cases to ensure that ARTS is working
properly. Use 'make check-all' to run all available controlfiles, including
computation time-intensive ones.
Some tests depend on the arts-xml-data package. cmake automatically looks if it
is available in the same location as ARTS itself. If necessary, a custom path
can be specified:
cmake -DARTS_XML_DATA_PATH=/home/myname/arts-xml-data ..
If arts-xml-data cannot be found, those tests are ignored.
By default, the tests are executed serially.
If you want to run them concurrently, you can use:
cmake -DTEST_JOBS=X ..
X is the number of tests that should be started in parallel.
You can also use the ctest command directly to run the tests:
ctest -j4
To run specific tests, use the -R option and specify part of the test case
name you want to run. The following command will run all tests that have 'ppath'
in their name, e.g. arts.ctlfile.fast.ppath1d ...:
ctest -R ppath
To see the output of ARTS, use the -V option:
ctest -V -R fast.doit
By default, ctest will not print any output from ARTS to the screen. The option
--output-on-failure can be passed to ctest to see output in the case an error
occurs. If you want to always enable this, you can set the environment variable
CTEST_OUTPUT_ON_FAILURE:
export CTEST_OUTPUT_ON_FAILURE=1
HITRAN CATALOG SUPPORT
======================
By default, ARTS only supports the latest HITRAN 2012 catalog version. Because
isotopologues have been renamed between different catalog versions, ARTS needs
to be compiled for one specific HITRAN version. If you want to use HITRAN
2008, you have to recompile ARTS with:
cmake -DWITH_HITRAN2008=1 ..
make arts
To switch back to HITRAN 2012, run:
cmake -DWITH_HITRAN2008=0 ..
make arts
OPTIONAL FEATURES
=================
To compile features that rely on Fortran code located in the 3rdparty
subdirectory use:
cmake -DENABLE_FORTRAN=1 ..
This enables Disort, Refice and Tmatrix.
If necessary, certain Fortran modules can be selectively disabled:
cmake -DENABLE_FORTRAN=1 -DNO_DISORT=1 ..
cmake -DENABLE_FORTRAN=1 -DNO_REFICE=1 ..
IMPORTANT: Only gfortran is currently supported and a 64-bit system is
required (size of long type must be 8 bytes).
DISABLING FEATURES
==================
Disable assertions:
cmake -DNO_ASSERT=1 ..
Disable OpenMP:
cmake -DNO_OPENMP=1 ..
Disable NetCDF:
cmake -DNO_NETCDF=1 ..
Disable the built-in documentation server:
cmake -DNO_DOCSERVER=1 ..
Treat warnings as errors:
cmake -DWERROR=1 ..
INTEL COMPILER
==============
If you want to compile with the Intel compiler[1], start with an empty build
directory and run:
CC=icc CXX=icpc cmake ..
[1] http://software.intel.com/c-compilers
LLVM/CLANG COMPILER
===================
If you want to compile with the LLVM/Clang compiler[1], start with an empty build
directory and run:
CC=clang CXX=clang++ cmake ..
Optionally, you can enable C++11 support and the new implementation of the standard
C++ library[2] (if available):
CC=clang CXX=clang++ CXXFLAGS="-std=c++11 -stdlib=libc++" cmake ..
Note that at this point, clang does not support OpenMP.
[1] http://clang.llvm.org
[2] http://libcxx.llvm.org
MAC OS X / XCODE
================
If you're on a Mac and have the Apple Xcode development environment installed,
you can generate a project file and use Xcode to build ARTS:
cmake -G Xcode ..
open ARTS.xcodeproj
EXPERIMENTAL FEATURES (ONLY USE IF YOU KNOW WHAT YOU'RE DOING)
==============================================================
Use C++11 and the new libc++ (currently only supported in Xcode builds):
cmake -G Xcode -DWITH_XCODE_LIBCPP=1 ..