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Build from source

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Compiling from source is probably the most effective way of installing Octave on your system. To do this you will require compilers for the following languages: * C* C++ (ISO)* Fortran The best supported compilers for the job are the [http://gcc.gnu.org/ GNU Compiler Collection]. You will require at least GCC 4.3 or later, although GCC 4.4 or later is recommended. To compile Octave, you will also need a recent version of GNU Make. You must have GNU Make to compile octave. Octave's Makefiles use features of GNU Make that are not present in other versions of make. GNU Make is very portable and easy to install.  ==Required or Useful Tools== * autoconf* automake* GNU sed* GNU awk* GNU make* nm* flex* bison* less* gperf (if building from scratch)* perl (also if building from scratch) or python* gnuplot* texinfo* ghostscript* a TeX? distribution (if building the documentation) ==Required or Useful Libraries== * readline* ncurses* zlib* A version of BLAS and LAPACK, e.g. Atlas* fftw* glpk* SuiteSparse? (without metis due to licensing issues): UMFPACK - AMD - CAMD - COLAMD - CCOLAMD - CHOLMOD - CXSPARSE* arpack (new GPL-conformant version)* qrupdate* hdf5* pcre* curl* qhull* fltk* libmagick++  <nowiki>Note for users of Debian stable "lenny", as of 2010/07/09, you can install these dependencies with apt-get install autoconf automake flex bison gperf gnuplot libreadline5-dev libncurses5-dev zlib1g-dev \ libatlas-base-dev fftw3-dev libglpk-dev libsuitesparse-dev libarpack2-dev libhdf5-mpich-dev \ libpcre3-dev libcurl4-gnutls-dev libqhull-dev gfortran libfltk1.1-dev libgraphicsmagick++1-dev Qrupdate is missing, but it is easy to install from http://qrupdate.sourceforge.netI also had to add a line #include "GL/glu.h" in src/DLD-FUNCTIONS/fltk_backend.cc.</nowiki> ==Download== Released source tarballs are available at http://www.octave.org/download.html. You will normally want to use one of those. The download page also contains instructions to download the development sources. If you are using the development sources, be sure to type the following command before configuring:  ./autogen.sh This builds the configure scripts that Octave uses. This requires a number of tools which are not needed if you download an octave release, such as recent versions of autoconf/automake, and tools such as bison, flex, gperf, perl, and maybe others. =Configure= Octave has many configure options. For a complete list, see  ./configure --help If you are building a personal version, you will want to install it into your home directory, or perhaps a subdirectory. Add the following to your configure line:  --prefix=$HOME/octave Be sure the $HOME/octave/bin is on your path, or symlink the binaries therein to $HOME/bin. ==Troubleshooting== 1. If you just type ./configure, you may get this error:  configure: WARNING: in order to build octave, you must have a compatible configure: WARNING: Fortran compiler or f2c installed and in your path. configure: error: See the file INSTALL for more information. This means that you don't have a fortran compiler on your system. You can either install a fortran compiler or re-install gcc with its optional build-in fortran compiler g77. To do this you must download the g77 components of gcc before you build gcc. Alternatively there are various f2c programs you could install which convert fortran to C. 2. If you get this warning:  configure: WARNING: "FTGL headers not found. Native renderer will not have on-screen text" configure: WARNING: configure: WARNING: I didn't find the necessary libraries to compile native configure: WARNING: graphics. It isn't necessary to have native graphics configure: WARNING: but you will have to use gnuplot or you won't be able configure: WARNING: to use any of Octave's plotting commands It may help to call configure with CPPFLAGS=-I/usr/include/freetype2, please see REDIRECT [http://www-old.cae.wisc.edu/pipermail/help-octave/2008-August/010610.html Problems with FTGL building octave-3.1.51],[http://www-old.cae.wisc.edu/pipermail/octave-maintainers/2008-September/008620.html Building ftgl backend with current tip]. Note that from [http://hg.savannah.gnu.org/hgweb/octave/rev/37afdd1d1bf8 changeset 8269] onward, this workaround should no longer be needed, please see [http://www-old.cae.wisc.edu/pipermail/octave-maintainers/2008-October/009154.html No FTGL, says configure script?] =Build=  make ==Troubleshooting==  Another possible error occurs at the 'make' stage:  /usr/include/c++/3.3.1/bits/basic_string.h:228: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_S_empty_rep_storage' collect2: ld returned 1 exit status make[2]: *** [octave] Error 1 This has something to do with the gcc configuration. Try compiling the following program using g++:  #include <string> #include <iostream> using namespace std; int main (void) { basic_string <char>a = "thing one"; string b = "thing two"; cout << a.c_str() << endl; return (a == b); } If it fails, then your compiler needs to be set-up differently (how?). On my machine I can compile that test program but still get the error making Octave -- how do we solve this? It has something to do with the shared C++ library versions, check for /usr/lib/libstdc++.so.6 and make sure the right version of that library is being used by gcc -- especially if you had to reinstall gcc to build the fortran support. If it still doesn't work, consider installing from the RPMs instead of compiling from source. =Test= To run all tests, change to the octave directory and type  make check This requires dejagnu. To run a specific set of tests, change to the directory test/octave.test/<part> and type  runtest <part>.exp To run your own tests use the [[RunInPlace]] shell script. =Install=  make install =System Specific Instructions= *[[PaulKienzleIrixConf|SGI/IRIX]]*[[Octave for Mac|Mac OS X]]*[[Octave_for_GNU_Linux:_Binary_Octave_packages_for_GNU_Linux#Debian_Development_Sources|Debian]]  =Distributed building= ==Requirements==  distcc ccache Install distcc on all machines taking part in the compilation. List them in <nowiki>~/.distcc/hosts</nowiki>:  localhost pc1.mynet.org pc2.mynet.org The first machines listed are given higher priority -- place 'localhost' as you see fit. Set the environment variables CCACHE_PREFIX, CXX and CC:  export CCACHE_PREFIX="distcc" export CXX="ccache g++" export CC="ccache gcc" ./configure <options> Compile using the <nowiki>-j<simultaneous-jobs></nowiki> flag, two jobs per CPU available, i.e. for 5 machines  make -j10
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