Note: Thanks to Alex Alvarado for pointing out a small error with the instructions. Also thanks to Brad Joyce for pointing our numerous other leaps in the directions.
There is some cool software called it++ which lets you write and do Matlab/Octave-like things in C++. So far I've had some trouble getting it installed.
You see, it uses blas, cblas, LAPACK, and fftw (and maybe some other stuff). Generally you'd want to have all these installed yourself before using it++, but on Mac OS X (since 10.2 I think), everything except fftw comes in the vecLib framework (which comes WITH OS X).
So, how do you get this thing running?
1) You need a fortran compiler, and apparently you won't have one by default. In theory, you can install it with Fink. That didn't work for me. I went to http://hpc.sourceforge.net/ and used his binaries . You're looking for g77 3.4. There are instructions there on exactly how to unpack the archive so that everything goes to the right place. Works great. Make sure that you add it to your path in ~/.profile and that you restart terminal (so that the changes take effect). G77 will go in /usr/local/bin, so you should add a line to your ~/.profile like:
export PATH=/usr/local/bin:$PATH
2) You need fftw. I just downloaded, did a ./configure , make, sudo make install and it went off without a hitch.
3) Now you want to install it++. First, go download and unpack it. Then, you should be able to:
./configure
You'll see this (hopefully)
------------------------------------------------------------------------------
itpp-3.10.10 library configuration:
------------------------------------------------------------------------------
Directories:
- prefix ......... : /usr/local
- exec_prefix .... : ${prefix}
- includedir ..... : ${prefix}/include
- libdir ......... : ${exec_prefix}/lib
- docdir ......... : ${datarootdir}/doc/itpp-3.10.10
Switches:
- debug .......... : no
- exceptions ..... : no
- html-doc ....... : no
- shared ......... : yes
- static ......... : no
Documentation tools:
- doxygen ........ : no
- latex .......... : yes
- dvips .......... : yes
- ghostscript .... : yes
Testing tools:
- diff ........... : yes
- sed ............ : yes
External libs:
- BLAS ........... : yes
* MKL .......... : no
* ACML ......... : no
* ATLAS ........ : no
- CBLAS .......... : yes
- LAPACK ......... : yes
- FFT ............ : yes
* MKL .......... : no
* ACML ......... : no
* FFTW ......... : yes
Compiler/linker flags/libs/defs:
- CXX ............ : g++
- F77 ............ : g77
- CXXFLAGS ....... : -DASSERT_LEVEL=1 -O3 -fno-exceptions -pipe
- CXXFLAGS_DEBUG . :
- CPPFLAGS ....... :
- LDFLAGS ........ :
- LIBS ........... : -lfftw3 -llapack -lblas
Note: If y ou didn't install fortran (g77), it WONT FIND LAPACK OR BLAS. That took me a long time to sort out. You've been warned.
Now, if everything went according to plan, you can do:
make
make check
This will run some checks to make sure things are working ok.
sudo make install
That's it, now you're done. Great work. Watch for a follow up post of how to use it++!
