I got the following error when compiling compcert 2.6 on 64bit macos
$./configure ia32-macosx
...
$make
...
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f Makefile.extr ccomp
ocamlfind: Package `menhirLib' not found
OCAMLOPT driver/Version.ml
ocamlopt.opt: unknown option '-3'.
Usage: ocamlopt <options> <files>
Options are:
...
make[2]: *** [driver/Version.cmx] Error 2
make[1]: *** [ccomp] Error 2
make: *** [all] Error 2
I installed both coq and menhir thru opam but somehow ocamlfind cannot find "menhirlib".
Versions Coq 8.4.pl6; Ocaml 4.02.2; opam 1.2.2; Menhir 20160303