Building Octave from source

[Sambeet Panigrahi]

Hi,

I have built Octave from source using the instructions from the Octave building website. I used the debian maintainers site to get the debian packages that can be installed using apt. So after installing all the dependencies, I used the following code:

hg clone https://www.octave.org/hg/octave && \
cd octave                                  && \
./bootstrap

mkdir .build                            && \
cd    .build                            && \
./../configure --prefix=$HOME/my_octave

But using the above I get the following error:
configure: WARNING: SUNDIALS IDA library not configured with SUNLINSOL_KLU or sunlinksol_klu.h is not usable.  
The solvers ode15i and ode15s will not support the sparse Jacobian feature.

I managed to build Octave using the command,
./../configure --prefix=$HOME/my_octave CPPFLAGS="-I/usr/include/suitesparse"

 Because I found the klu.h library inside suitesparse.How can I add this to the configure.ac

so that next time I can just configure using:
./../configure --prefix=$HOME/my_octave

Can someone please help me out?