Error in Make of DDD 3.2.1

[Aidan Power]

I am looking for help for the install of DDD debug tool on Unix system. This 
is the error that I get during the Make. Am I missing something?

cxx  -DHAVE_CONFIG_H -DNDEBUG -g   -c -I. -I. -I./..  -o VSLLib.o VSLLib.C
cxx  -DHAVE_CONFIG_H -DNDEBUG -g   -c -I. -I. -I./..  -o VSLNode.o VSLNode.C
cxx  -DHAVE_CONFIG_H -DNDEBUG -g   -c -I. -I. -I./..  -o VSLRead.o VSLRead.C
cxx Error: ./vsl-gramma.Y, line 1224: linkage specification is incompatible
          with previous "vslerror" (declared at line 3 of "vsl-gramma.C")
extern void vslerror(char *); 
------------^
cxx Error: ./vsl-gramma.Y, line 1225: linkage specification is incompatible
          with previous "vsllex" (declared at line 744 of "lex.vsl.c")
extern int vsllex();
-----------^
cxx Warning: ./vsl-gramma.Y, line 1313: subscript out of range
        vslpv = &vslv[-1];
---------------------^
cxx Warning: ./vsl-gramma.Y, line 1314: subscript out of range
        vslps = &vsls[-1];
---------------------^
cxx Info: 2 errors detected in the compilation of "VSLRead.C".
*** Exit 1

Regards
Aidan Power