In file included from http-common.c:26:0:
dirmngr.h:32:18: fatal error: ksba.h: No such file or directory
#include <ksba.h>
^
compilation terminated.
make[2]: * [t_ldap_parse_uri-http-common.o] Error 1
make[2]: Leaving directory `/scratch/gnupg/gnupg-2.2.26/dirmngr'
make[1]: * [all-recursive] Error 1
make[1]: Leaving directory `/home/scratch/ramesh/gnupg/gnupg-2.2.26'
make: *** [all] Error 2