I set both CPPFLAGS and LDFLAGS with ./configure, but the header fst.h is still not found. Though it is located in the indicated in the CPPFLAGS directory.
./configure CPPFLAGS=-I/Users/username/Downloads/openfst-1.5.1/src/include LDFLAGS=-L/Users/username/Downloads/openfst-1.5.1/src/lib
...
checking for stdint.h... yes
checking for unistd.h... yes
checking fst/fst.h usability... no
checking fst/fst.h presence... no
checking for fst/fst.h... no
configure: error: Required file fst/fst.h not found -- aborting
What am I missing?