Checking if your kit is complete...
Warning: the following files are missing in your kit:
	.#LetterTree.xs.1.7
	.#typemap.1.3
	LetterTree.bs
	LetterTree.c
	LetterTree.o
Please inform the author.
Note (probably harmless): No library found for -llettertree
Writing Makefile for Data::LetterTree
cp lib/Data/LetterTree.pm blib/lib/Data/LetterTree.pm
/home/cpanrun/ia64/build/5.8.2/bin/perl /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp  -typemap /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/typemap -typemap typemap  LetterTree.xs > LetterTree.xsc && mv LetterTree.xsc LetterTree.c
Please specify prototyping behavior for LetterTree.xs (see perlxs manual)
cc -c   -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +DSitanium2 +Ofltacc=strict   -DVERSION=\"0.1\" -DXS_VERSION=\"0.1\" +Z "-I/home/cpanrun/ia64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi/CORE"   LetterTree.c
Error 112: "LetterTree.xs", line 7 # Include file "lettertree.h" not found.
    #include "lettertree.h"
             ^^^^^^^^^^^^^^
Error 172: "LetterTree.c", line 37 # Undeclared variable 'Node'.
            Node *  RETVAL;
            ^^^^           
Error 172: "LetterTree.xs", line 15 # Undeclared variable 'RETVAL'.
            RETVAL = new_tree();
            ^^^^^^              
Error 172: "LetterTree.c", line 42 # Undeclared variable 'RETVAL'.
            sv_setref_pv(ST(0), "NodePtr", (void*)RETVAL);
            ^^^^^^^^^^^^                                  
Error 172: "LetterTree.c", line 60 # Undeclared variable 'Node'.
            Node *  tree;
            ^^^^         
Error 419: "LetterTree.c", line 68 # 'Node' is used as a type, but has not been defined as a type.
                tree = INT2PTR(Node *,tmp);
                       ^^^^^^^             
Error 403: "LetterTree.c", line 68 # Undeclared variable 'tree'. Perhaps 'free' as in "void free(void *)" ["/usr/include/stdlib.h", line 173] was intended.
                tree = INT2PTR(Node *,tmp);
                ^^^^                       
Error 403: "LetterTree.c", line 73 # Undeclared variable 'tree'. Perhaps 'free' as in "void free(void *)" ["/usr/include/stdlib.h", line 173] was intended.
            RETVAL = add_data(tree, word, data);
                              ^^^^              
Error 172: "LetterTree.c", line 92 # Undeclared variable 'Node'.
            Node *  tree;
            ^^^^         
Error 419: "LetterTree.c", line 99 # 'Node' is used as a type, but has not been defined as a type.
                tree = INT2PTR(Node *,tmp);
                       ^^^^^^^             
Error 403: "LetterTree.c", line 99 # Undeclared variable 'tree'. Perhaps 'free' as in "void free(void *)" ["/usr/include/stdlib.h", line 173] was intended.
                tree = INT2PTR(Node *,tmp);
                ^^^^                       
Error 403: "LetterTree.c", line 104 # Undeclared variable 'tree'. Perhaps 'free' as in "void free(void *)" ["/usr/include/stdlib.h", line 173] was intended.
            RETVAL = has_word(tree, word);
                              ^^^^        
Error 699: "LetterTree.c", line 104 # Error limit reached; halting compilation.
            RETVAL = has_word(tree, word);
                              ^^^^        
make: *** [LetterTree.o] Error 2