Add tcs; it compiles in my world, but I haven't tried it in Russ's yet.
diff --git a/src/cmd/tcs/font/hdr.h b/src/cmd/tcs/font/hdr.h
new file mode 100644
index 0000000..e401dc0
--- /dev/null
+++ b/src/cmd/tcs/font/hdr.h
@@ -0,0 +1,11 @@
+typedef Bitmap *readbitsfn(char *, int, long *, int, uchar *, int **);
+typedef void mapfn(int, int, long *);
+
+extern Bitmap *kreadbits(char *file, int nc, long *chars, int size, uchar *bits, int **);
+extern void kmap(int from, int to, long *chars);
+extern Bitmap *breadbits(char *file, int nc, long *chars, int size, uchar *bits, int **);
+extern void bmap(int from, int to, long *chars);
+extern Bitmap *greadbits(char *file, int nc, long *chars, int size, uchar *bits, int **);
+extern void gmap(int from, int to, long *chars);
+extern Bitmap *qreadbits(char *file, int nc, long *chars, int size, uchar *bits, int **);
+extern Subfont *bf(int n, int size, Bitmap *b, int *);