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ocamlbuild -use-ocamlfind does not work together with -ocamlc switch #6300

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vicuna opened this issue Jan 20, 2014 · 1 comment

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commented Jan 20, 2014

Original bug ID: 6300
Reporter: nbb
Assigned to: @gasche
Status: closed (set by @xavierleroy on 2016-12-07T10:34:31Z)
Resolution: fixed
Priority: normal
Severity: minor
OS: OS X
OS Version: 10.9
Target version: 4.02.1+dev
Fixed in version: 4.02.0+dev
Category: -for ocamlbuild use https://github.com/ocaml/ocamlbuild/issues
Monitored by: @gasche

Bug description

it appears to be impossible to specify for example ocamlcp as the bytecode compiler when also ocamlfind is used

Steps to reproduce

cat "let _ = 3" > test.ml
ocamlbuild -ocamlc ocamlcp test.byte # succeeds
ocamlbuild -use-ocamlfind -ocamlc ocamlcp test.byte

compiles silently with ocamlc instead of ocamlcp

Additional information

in the trivial test, findlib is not needed, but in the real example it was.

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commented Aug 19, 2014

Comment author: @gasche

Fixed in 4.02@15114.

"ocamlbuild -use-ocamlfind -ocamlc FOO" now invokes "ocamlfind FOO" instead of "ocamlfind ocamlc" -- similarly for all -ocamlfoo flags that correspond to ocamlfind subcommands.

There is a subtlety in the timing of when various options are taken into accounts to set these things -- read the commit message for more details. The take-away is that if you want to set use_ocamlfind through the myocamlbuild.ml rather than through the command-line, you should do this at the Before_options dispatch time rather than later. This means that users may be able to override this setting using -no-ocamlfind (the plugin cannot override the command-line option if it's passed), but I don't think that is problematic.

@vicuna vicuna closed this Dec 7, 2016

@vicuna vicuna added the ocamlbuild label Mar 14, 2019

@vicuna vicuna added this to the 4.02.1 milestone Mar 14, 2019

@vicuna vicuna added the bug label Mar 20, 2019

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