In <list-8113084@2rosenthals.com>, on 10/15/23
    at 05:45 PM, "Paul Smedley" <ecs-isp@2rosenthals.com> said:

Hi Paul,

Is there a reason you are not building with USE_MPOOL?  Looking at:

libclamav\mpool.c:637
void *mpool_malloc(struct MP *mp, size_t size)

and friends, the OS/2 code seems to be in place to support mpool using
DosAllocMem rather than mmap.  However, it looks like configure is missing
the code to allow OS/2 to enable mpool support.  Looking at

configure:22851
have_mempool="no"
if test "$enable_mempool" = "yes"; then

configure will not allow enable_mempool because it assumes that OS/2 is
going to use mmap to implement the pool.

BTW, when you get a moment, please commit your configure and build cmd
files to the repo.  They are a useful reference.