Trouble building bsc on Linux

[glennsl]

Get the following error:

ocamlmklib stubs/ext_basic_hash_stubs.o -o bs_hash
/usr/bin/ld: stubs/ext_basic_hash_stubs.o: relocation R_X86_64_PC32 against undefined symbol `caml_hash_mix_string' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Bad value

On Arch Linux, with ocaml 4.02.3+buckle-master.

Steps to reproduce:

git clone https://github.com/bloomberg/bucklescript.git --recursive
cs bucklescript/jscomp
make world
make bin/bsc.exe

[bobzhang]

@glennsl is ArchLinux 32 bit OS?

[glennsl]

No, it's 64-bit. And a rolling release distro, so very up to date.

[bobzhang]

@glennsl so you can run make -C bin bsc.exe but not make bin/bsc.exe correct?
Note for devs,
make -C bin bsc.exe will build bsc.exe from the snapshot single monolithic file
make bin/bsc.exe will reuse compiler-libs and build from all existing sources

[glennsl]

That is correct. So a workaround is make force-snapshotml && make -C bin bsc.exe, just without the niceties of incremental and debug mode compilation?

[bobzhang]

It is a temporary work around, I will investigate why it work that way reply@reply.github.com At: 02/21/17 10:27:30" data-digest="From: reply@reply.github.com At: 02/21/17 10:27:30" style=""> From: reply@reply.github.com At: 02/21/17 10:27:30 To: bucklescript@noreply.github.com Cc: HONGBO ZHANG (BLOOMBERG/ 731 LEX), comment@noreply.github.com Subject: Re: [bloomberg/bucklescript] Trouble building bsc on Linux (#1237) That is correct. So a workaround is make force-snapshotml && make -C bin bsc.exe, just without the niceties of incremental and debug mode compilation? — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

[bobzhang]

according to
http://stackoverflow.com/questions/21224090/gcc-shared-library-failed-linking-to-glibc

would adding -ccopt -fPIC fix it for you?
https://github.com/bloomberg/bucklescript/blob/master/jscomp/Makefile#L97

cc @mransan

[glennsl]

No, still same error.

Steps taken:

# add -ccopt -fPIC to Makefile
make -B world
rm bin/bsc.exe
make bin/bsc.exe

make -B bin/bsc.exe gives a different error:

cppo -D TYPE_FUNCTOR ext/vec.cppo.ml -o ext/resize_array.ml
make: cppo: Command not found

[bobzhang]

@glennsl ah, we have another dev dependency, opam install cppo. so -fPIC does not work? It works on my machine so I don't know how to debug..

[glennsl]

:(

npm ERR! 404 Not found : @opam/ocamlfind
npm ERR! 404 
npm ERR! 404  '@opam/ocamlfind' is not in the npm registry.

I have no idea how to debug it either. But make force-snapshotml && make -C bin bsc.exe works and I'm happy with that for now.

[bobzhang]

@glennsl hmm, to make you life easier, to try ocaml native tools, I would suggest opam switch 4.02.3+local-git-master which works perfect for me ..

[glennsl]

I had to dump opam to get reason-cli working. Could try it again though.

[OvermindDL1]

I had to dump opam to get reason-cli working. Could try it again though.

Uh, that is questionable, you should not need to do that...

[glennsl]

Yea it probably wasn't needed, but it was one of the suggested steps to resolve the issue at the time. Now I'm just being careful to not rock the boat too much :)