[Gretl-users] lapack/gretl on 64 sabayon/gentoo

[Helgi Tomasson]

Diagnostics on compilaton of GRETL on saybayon(gentoo)-64 linux. Fast
fourier transform works (and a lot of things I have tested) where as
johansen-test does not. There is lapack in /usr/lib64 which is the same
as in the one in /usr/lib.

Lapack is working in R, and in test programs (R and c++).

The treatment of "int", "integer" and long in gcc is dependent on -m32
-m64 flags.

The following program:

include <stdio.h>
 
int main()
{
        int i;
        long l;
        char *p;
        double x;
 
        printf("Integer size: %i bytes\n", sizeof(i));
        printf("Long Integer size: %i bytes\n", sizeof(l));
        printf("Pointer size: %i bytes\n", sizeof(p));
        printf("Double size: %i bytes\n",sizeof(x));
        return 0;
}

can be compiled with

a) gcc -m32 which gives:

Integer size: 4 bytes
Long Integer size: 4 bytes
Pointer size: 4 bytes
Double size: 8 bytes


or b) the default (on sabayon-64), gcc -m64 


Integer size: 4 bytes
Long Integer size: 8 bytes
Pointer size: 8 bytes
Double size: 8 bytes


The lapack library compiles with -m64 which does not disturb R.  The
c-test program complains if an integer is passed to lapack in the "int"
form instead of the "long" form. I looked through the /lib/src directory
and I saw that "int" was passed to lapack. I think a way out is to
change all "int" passed to lapack to "long" in gretl_matric.c and all
"integer" to long in  clapack_double.h. Is there a way to do that in the
configure script (i.e. force all int to be long)? Is there a "make
uninstall" in the Makefile of 1.7.1?

Maybe it is sufficient to change only the integer arrays to long?

Best regards

Helgi



> 
> My suspicion at this point is that you're building a 64-bit gretl 
> linked against a 32-bit lapack:
> 
>   LAPACK_LIBS='-L/usr/lib -llapack -lblas -lgfortran'
> 
> You might try configuring with
> 
>   --with-lapack-prefix=/usr/lib64
> 
> to pick up a 64-bit lapack installation.  Is there in fact a 
> liblapack.so in /usr/lib64 ? 
> 
> Allin Cottrell
> 
> 
> 
> 
> _______________________________________________
> Gretl-users mailing list
> Gretl-users at lists.wfu.edu
> http://lists.wfu.edu/mailman/listinfo/gretl-users