Compilation failed in OSX with gcc 5.3.0

make gives the following error on OSX. I'm running gcc version 5.3.0, and use the PostgreSQL App version. Any idea what's wrong?
gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv -Wno-unused-command-line-argument  -mmacosx-version-min=10.7  -I. -I./ -I/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server -I/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/internal -I/Applications/Postgres.app/Contents/Versions/9.6/include/libxml2  -I/Applications/Postgres.app/Contents/Versions/9.6/include  -c -o twitter_fdw.o twitter_fdw.c
twitter_fdw.c: In function 'twitter_fdw_handler':
twitter_fdw.c:180:29: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
  fdwroutine->GetForeignPlan = twitterGetPlan;
                             ^
twitter_fdw.c:182:7: warning: extra tokens at end of #endif directive [-Wendif-labels]
 #endif;
       ^
twitter_fdw.c: In function 'twitterGetPaths':
twitter_fdw.c:416:50: error: incompatible type for argument 3 of 'create_foreignscan_path'
   (Path *)create_foreignscan_path(root, baserel, baserel->rows,
                                                  ^
In file included from twitter_fdw.c:15:0:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/optimizer/pathnode.h:90:21: note: expected 'PathTarget * {aka struct PathTarget *}' but argument is of type 'double'
 extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel,
                     ^
In file included from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/tupdesc.h:19:0,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/utils/relcache.h:17,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/genam.h:21,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/amapi.h:15,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/reloptions.h:22,
                 from twitter_fdw.c:3:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/nodes/pg_list.h:69:18: error: incompatible type for argument 6 of 'create_foreignscan_path'
 #define NIL      ((List *) NULL)
                  ^
twitter_fdw.c:417:15: note: in expansion of macro 'NIL'
     10, 1000, NIL, NULL, NIL));
               ^
In file included from twitter_fdw.c:15:0:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/optimizer/pathnode.h:90:21: note: expected 'Cost {aka double}' but argument is of type 'List * {aka struct List *}'
 extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel,
                     ^
In file included from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/tupdesc.h:19:0,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/utils/relcache.h:17,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/genam.h:21,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/amapi.h:15,
                 from /Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/access/reloptions.h:22,
                 from twitter_fdw.c:3:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/nodes/pg_list.h:69:18: warning: passing argument 8 of 'create_foreignscan_path' from incompatible pointer type [-Wincompatible-pointer-types]
 #define NIL      ((List *) NULL)
                  ^
twitter_fdw.c:417:26: note: in expansion of macro 'NIL'
     10, 1000, NIL, NULL, NIL));
                          ^
In file included from twitter_fdw.c:15:0:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/optimizer/pathnode.h:90:21: note: expected 'Relids {aka struct Bitmapset *}' but argument is of type 'List * {aka struct List *}'
 extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel,
                     ^
twitter_fdw.c:416:11: error: too few arguments to function 'create_foreignscan_path'
   (Path *)create_foreignscan_path(root, baserel, baserel->rows,
           ^
In file included from twitter_fdw.c:15:0:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/optimizer/pathnode.h:90:21: note: declared here
 extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel,
                     ^
twitter_fdw.c: In function 'twitterGetPlan':
twitter_fdw.c:433:9: error: too few arguments to function 'make_foreignscan'
  return make_foreignscan(tlist, keep_clauses, baserel->relid, NIL, baserel->fdw_private);
         ^
In file included from twitter_fdw.c:16:0:
/Applications/Postgres.app/Contents/Versions/9.6/include/postgresql/server/optimizer/planmain.h:51:21: note: declared here
 extern ForeignScan *make_foreignscan(List *qptlist, List *qpqual,
                     ^
twitter_fdw.c: In function 'twitterBegin':
twitter_fdw.c:482:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
  int    ret;
         ^
twitter_fdw.c: In function 'twitterGetPlan':
twitter_fdw.c:434:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
twitter_fdw.c: At top level:
cc1: warning: unrecognized command line option '-Wno-unused-command-line-argument'
make: *** [twitter_fdw.o] Error 1
umitanuki / twitter_fdw

Compilation failed in OSX with gcc 5.3.0 #9
