How to compile with support for 64-bit integers?

[Optimization10]

I am trying to install METIS with 64-bit integer support, so presumably I have to do the same for GKlib. However, there doesn't seem to be a configuration for this when installing GKlib. Is it enough to change lines 23-24 of gk_types.h from

typedef int32_t gk_int_t; /* integer values /
typedef uint32_t gk_uint_t; / unsigned integer values */

to

typedef int64_t gk_int_t; /* integer values /
typedef uint64_t gk_uint_t; / unsigned integer values */

and then install as normal?

[gfaster]

You don't need to install GKlib with explicit 64-bit integer support for METIS. METIS uses gklib's makeshift templates (e.g. gk_mkblas.h) for its needed routines.