odt2txt is a utility to extract text out of Open Office documents. The extracted text can be useful if you want to find out if the text in two documents differ. Well, that's what I was looking to do.
But, it didn't build on OSX; maybe there was a way to do this by passing arguments to make–I don't know–I had to add the following to the Makefile to get it to recognize my Macports.
ifeq ($(UNAME_S),Darwin) CFLAGS += -DICONV_CHAR="const char" -I/opt/local/include LDFLAGS += -L/opt/local/lib LIBS += -liconv endif
It built fine after that.