[Lapackpp-devel] RE: Problems when try to build lapackpp on Debian Linux

[<hon...@ag...>]

Hello, Christian,

>This means that lapack++ cannot link correctly against the LAPACK and
>BLAS libraries. This will also mean that any other project using
>lapack++ cannot run, as you have discovered with mimolib. You need to
>fix this first, otherwise the mimolib project will not work anyway.

   Agree with you on this. I also suspect that the link of LAPACK and =
BLAS library is not
correct.

>In any case, the problem is that your LAPACK and BLAS package have not
been correctly installed.=20

I have used the lapack package of Debian Linux first. Attached please =
find the ./configure result.
Before I do this, I have made sure that there is no different version of =
LAPACK lib exists.
The version of LAPACK I used is lapack_3.0.20000531a-28_i386.deb. I =
install it with the usual=20
package manager. That is, I use 'apt-get install' and there is no =
conflict, no error during the install.


Unfortunately, the make check
failed in this case. Please refer to the attached file conf.result1. =
Hopefully this will help you to locate=20
the problem. The make test result is as follows:

make[3]: Entering directory `/hdb2/MIMO/lapackpp-2.3.0/blaspp/testing'
if g++ -DHAVE_CONFIG_H -I. -I. -I../.. -I../../include -I../../include =
-DLA_COMPLEX_SUPPORT -DHAVE_CONFIG_H -DLinux     -g -O2 -Wall -MT =
tblasd++.o -MD -MP -MF ".deps/tblasd++.Tpo" -c -o tblasd++.o =
tblasd++.cc; \
then mv -f ".deps/tblasd++.Tpo" ".deps/tblasd++.Po"; else rm -f =
".deps/tblasd++.Tpo"; exit 1; fi
/bin/sh ../../libtool --tag=3DCXX --mode=3Dlink g++  -g -O2 -Wall  =
-L../../blaspp/src -L../../src -llapackpp -llapack.2.0 -L/usr/lib =
-lcblas.2.3 -lf77blas.2.3 -latlas.2  =
-L/usr/lib/gcc-lib/i386-linux/2.95.4 -lg2c -lm  -o tblasd++  tblasd++.o
mkdir .libs
g++ -g -O2 -Wall -o tblasd++ tblasd++.o  =
-L/hdb2/MIMO/lapackpp-2.3.0/blaspp/src -L/hdb2/MIMO/lapackpp-2.3.0/src =
-llapackpp -llapack.2.0 -L/usr/lib -lcblas.2.3 -lf77blas.2.3 -latlas.2 =
-L/usr/lib/gcc-lib/i386-linux/2.95.4 -lg2c -lm
/usr/bin/ld: cannot find -llapackpp
collect2: ld returned 1 exit status
make[3]: *** [tblasd++] Error 1


Then I suspect that the lapack library I am using is not good. So I =
remove the lapack package from my
Debian Linux box and try to use the self-built LAPACK. The package I am =
using is from
www.netlib.org/lapack. The build and installation of this package is =
really different from usual packages. It=20
will build the library under the directory where it is built and 'make =
install' makes no difference. I try to
run lapackpp configure as follows:

./configure --with-blas=3D/hdb2/MIMO/LAPACK/blas_LINUX.a =
--with-lapack=3D/hdb2/MIMO/LAPACK/lapack_LINUX.a.

It fails (refer to conf.result2).

Since the configure script can't find the self-built library, I made =
change to force it to use the self-built library. That is
why the library in the build directory is used.



>In any case, I'm also confused why your LAPACK library filenames end in
>".a", i.e. they are static libraries. On a recent Linux you would =
always
>have ".so" files, shared object, i.e. dynamic libraries. This again
>looks like you didn't install the LAPACK package correctly. Again,
>please ask the Debian guys on how to do this correctly on Debian.

As mentioned above, the self-built LAPACK package is from =
www.netlib.org/lapack. The built result
is really different from usual package. It build static libraries.

Maybe a better questions is which lapack package you are using when you =
build lapackpp.=20
Will you please tell me on which Linux distribution you have tested to =
build lapackpp?

Best regards,
Hongwei