|How to build and maintain DCFemLib|
For experienced Unix users it should not be too difficult to build dcfemlib on your computer since it is done by means of autoconf/automake, configure and make. Most Problems occur when linking with third party software as taucs. The following description helps to understand how it works.
First obtain the software via CVS (assume in the folder ~/src) loggin in:
# cvs -d:pserver:username@server:/usr/local/CVSroot login
# cvs -d:pserver:username@server:/usr/local/CVSroot co dcfemlib
and the source files will organize under ~/src/dcfemlib.
Later on you can update by the command # cvs update
Download the external software mentioned in the following and install it, usually you do this under ~/src/xxx and link it to ~/src/dcfemlib/external/xxx
|it is recommended to first install UFconfig configuring a lot of numerical packages
|on 64 bit machines you must compile with the -fPIC option, put it in the configfiles/makefiles at the (lastly occuring!) CFLAG line, if you do it in UFconfig/UFconfig.mk this will hold for AMD,LDL,CHOLMOD
|AMD - approximate minimum degree reordering, strongly recommended, use version 1.1 or higher and link to external/AMD
|ann - approximate nearest neighbor, needed for interpolation, version 0.1 or 0.2, link to external/ann
|LDL - LDL decomposition direct solver, recommended, version 1.0 or higher, link to external/LDL
|METIS - sophisticated reordering used only with taucs, link to external/metis
|TAUCS - direct multifrontal solver, recommended only for big problems, link to external/taucs (help), I suggest to skip this at first
|TRIANGLE - 2d quality mesh generation, version 1.5-1.6, link to external/triangle (make sure you created a library by "make trilibrary" or ar "cqs libtriangle.a triangle.o")
|TETGEN - 3d quality mesh generator, add directory to path
|different versions can be installed and switched by just changing the link|
After building the external libraries (which may be tricky, particularly for taucs), dcfemlib can be build itself by typing the commands:
# ./reconf # for some unknown reason
First autoconf is called to detect computer ressources. Changes may be made in configure.ac. Then the makefiles are generated and make builds recursively. A further change or update just needs "make". Changes in the configuration need "./configure". "make install" copies all binaries and libs to the according dirs (installdir/bin and installdir/lib). Make sure to add these to the binary (PATH) and library (LD_LIBRARY_PATH) paths. Run "configure --prefix=installdir" before to set up the installation dirs different from the default dcfemlib dir.
We recommend the use of Code::Blocks, a free and platform-independent suite that brings along the MINGW (minimalistic gnu for windows) with it. In the dcfemlib/mingw directory we provide code-block projects (*.cbp):
First compile the libraries amd,ldl,ann and triangle.
Then compile the library dcfemlib or better the whole bert. See also the BERT4Win page.