ocamlfind 1.8.1 doesn't build

[Khady]

$ esy
info esy 0.6.7 (using package.json)
info checking https://github.com/ocaml/opam-repository for updates...
info checking https://github.com/esy-ocaml/esy-opam-override for updates...
info resolving esy packages: done                         
info solving esy constraints: done         
info resolving npm packages: done
info fetching: done                                                                                                       
info installing: done                                                                                                                
info building @opam/ocamlbuild@opam:0.14.0@6ac75d03
info building @opam/ocamlfind@opam:1.8.1@ff07b0f9
info building @opam/stdio@opam:v0.14.0@a624e254
error: build failed with exit code: 1
  build log:
    # esy-build-package: building: @opam/ocamlfind@opam:1.8.1
    # esy-build-package: pwd: /home/louis/.esy/3/b/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db
    # esy-build-package: running: 'bash' '-c' 'true'
    # esy-build-package: running: './configure' '-bindir' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/bin' '-sitelib' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/lib' '-mandir' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/man' '-config' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/lib/findlib.conf' '-no-custom' '-no-topfind'
    Welcome to findlib version 1.8.1
    Configuring core...
    Checking for #remove_directory...
    Testing threading model...
    systhread_supported: true
    Testing DLLs...
    Testing whether ppxopt can be supported...
    Checking for ocamlc -opaque...
    Configuring libraries...
    native dynlink: found
    labltk: not present
    ocamlbuild: not present
    camlp4: not present (normal since OCaml-4.02)
    compiler-libs: found
    dbm: not present (normal since OCaml-4.00)
    num: not present (normal since OCaml-4.06)
    bytes: found, installing fake library
    spacetime: found
    graphics: not found
    Configuration for dynlink written to site-lib-src/dynlink/META
    Configuration for str written to site-lib-src/str/META
    Configuration for threads written to site-lib-src/threads/META
    Configuration for unix written to site-lib-src/unix/META
    Configuration for stdlib written to site-lib-src/stdlib/META
    Configuration for bigarray written to site-lib-src/bigarray/META
    Configuration for ocamldoc written to site-lib-src/ocamldoc/META
    Configuration for compiler-libs written to site-lib-src/compiler-libs/META
    Configuration for bytes written to site-lib-src/bytes/META
    Configuration for raw_spacetime written to site-lib-src/raw_spacetime/META
    Detecting compiler arguments: (extractor built) FAILED (see the file ocargs.log for details)
    error: command failed: './configure' '-bindir' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/bin' '-sitelib' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/lib' '-mandir' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/man' '-config' '/home/louis/.esy/3____________________________________________________________________/s/opam__s__ocamlfind-opam__c__1.8.1-3ed6d6db/lib/findlib.conf' '-no-custom' '-no-topfind' (exited with 1)
    esy-build-package: exiting with errors above...
    
  building @opam/ocamlfind@opam:1.8.1
esy: exiting due to errors above

Can reproduce on https://github.com/Khady/modern-ocaml/tree/ocaml-411

[Khady]

no error with ocaml 4.11.0, only with 4.11.1000.

[glennsl]

Getting same error with 4.10.1002. Contents of ocargs.log is:

ocamlc -o extract_args str.cma extract_args.ml
tools/extract_args/extract_args: line 2: syntax error near unexpected token `$'\001\001C''
tools/extract_args/extract_args: line 2: `T�W%.7@IR[gt}���c(C'

[glennsl]

I can't easily upgrade to 4.11.0, but downgrading to 4.10.0 also worked.

[ManasJayanth]

@glennsl The fix can be found in the nightly release