Makefile dependencies issue

[kyechou]

Environment

• BAP 1.6.0
• OCaml 4.05.0
• GCC 9.2.0

Problem

$ git clone https://github.com/BinaryAnalysisPlatform/bap-bindings.git
$ cd bap-bindings/
$ autoconf && ./configure
$ make -j
ocamlc -g -c bap/stub/init.c
~/.opam/4.05.0/bin/ocamlfind opt -c -o _build/bap/lib/bindings.cmx -I _build/bap/generated -I _build/bap/lib -package bap,bap.plugins,ctypes.stubs,ctypes.foreign,findlib.dynload bap/lib/bindings.ml
~/.opam/4.05.0/bin/ocamlfind opt -c -o _build/bap/stub_generator/generate.cmx -I _build/bap/generated -I _build/bap/lib -package bap,bap.plugins,ctypes.stubs,ctypes.foreign,findlib.dynload bap/stub_generator/generate.ml
~/.opam/4.05.0/bin/ocamlfind opt -c -o _build/bap/lib/apply_bindings.cmx -I _build/bap/generated -I _build/bap/lib -package bap,bap.plugins,ctypes.stubs,ctypes.foreign,findlib.dynload bap/lib/apply_bindings.ml
mv init.o _build/bap/stub/init.o
File "bap/lib/apply_bindings.ml", line 1, characters 22-34:
Error: Unbound module Bap_bindings
File "bap/stub_generator/generate.ml", line 9, characters 22-35:
Error: Unbound module Bindings
make: *** [Makefile:75: _build/bap/lib/apply_bindings.cmx] Error 2
make: *** Waiting for unfinished jobs....
make: *** [Makefile:75: _build/bap/stub_generator/generate.cmx] Error 2

It seems that there are some dependencies between built files unspecified in the makefile, since it works fine without the -j option.

[ivg]

Indeed, the dependencies between OCaml modules are not specified. In particular, the generate.ml is not having bindings.ml as a dependency and it all starts the chain of failures.