Unable to compile on PostgreSQL 11

gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -O3 -fPIC -Wno-unused-variable -I/usr/lib/jvm/default-java/include -I/usr/lib/jvm/default-java/include/linux/  -Ilibhive -DHAVE_NETINET_IN_H -DHAVE_INTTYPES_H -I. -I./ -I/home/psql/11/include/postgresql/server -I/home/psql/11/include/postgresql/internal -D_GNU_SOURCE   -c -o hdfs_deparse.o hdfs_deparse.c
hdfs_deparse.c: In function ‘deparseTargetList’:
hdfs_deparse.c:528:28: error: incompatible types when initializing type ‘Form_pg_attribute {aka struct FormData_pg_attribute *}’ using type ‘FormData_pg_attribute {aka struct FormData_pg_attribute}’
   Form_pg_attribute attr = tupdesc->attrs[i - 1];
                            ^~~~~~~
hdfs_deparse.c: In function ‘deparseAnalyzeSql’:
hdfs_deparse.c:625:24: error: invalid type argument of ‘->’ (have ‘FormData_pg_attribute {aka struct FormData_pg_attribute}’)
   if (tupdesc->attrs[i]->attisdropped)
                        ^~
In file included from /home/psql/11/include/postgresql/server/postgres.h:46:0,
                 from hdfs_deparse.c:16:
hdfs_deparse.c:633:38: error: invalid type argument of ‘->’ (have ‘FormData_pg_attribute {aka struct FormData_pg_attribute}’)
   colname = NameStr(tupdesc->attrs[i]->attname);
                                      ^
/home/psql/11/include/postgresql/server/c.h:576:25: note: in definition of macro ‘NameStr’
 #define NameStr(name) ((name).data)
                         ^~~~
hdfs_deparse.c: In function ‘deparseColumnRef’:
hdfs_deparse.c:702:13: warning: implicit declaration of function ‘get_relid_attribute_name’; did you mean ‘get_rte_attribute_name’? [-Wimplicit-function-declaration]
   colname = get_relid_attribute_name(rte->relid, varattno);
             ^~~~~~~~~~~~~~~~~~~~~~~~
             get_rte_attribute_name
hdfs_deparse.c:702:11: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
   colname = get_relid_attribute_name(rte->relid, varattno);
           ^
<builtin>: recipe for target 'hdfs_deparse.o' failed
make: *** [hdfs_deparse.o] Error 1
EnterpriseDB / hdfs_fdw

Unable to compile on PostgreSQL 11 #62
