<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Unison Hackers:<div class=""><br class=""></div><div class="">Was wondering if anyone out there could provide some Unison build help? I'm trying to get Unison 2.51 running on both macOS (High Sierra, 10.13) and Raspberry Pi (Raspbian / Debain 9.13).</div><div class=""><br class=""></div><div class="">So the latest version of Unison on macOS Brew is:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">$ unison -version</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">unison version 2.51.2 (ocaml 4.08.1)</span></div></div></blockquote><div class=""><br class=""></div><div class="">So I installed OCaml on Raspbian (apt-get install ocaml), downloaded the latest Unison source code (2.51.2) from this page:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><span style="font-family: Arial, sans-serif; background-color: rgb(255, 255, 255);" class=""><a href="https://github.com/bcpierce00/unison/releases" class="">https://github.com/bcpierce00/unison/releases</a></span></div></blockquote><div class=""><span style="font-family: Arial, sans-serif; background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class="">and was able to successfully compile and install Unison 2.51.2 on Raspbian:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">$</span> unison -version</div></div></blockquote><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">unison version 2.51.2 (ocaml 4.02.3)</span></div></div></blockquote><div class=""><br class=""></div><div class="">However, when I try to sync between macOS and Raspbian, I receive the following error:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Fatal error: Server: Fatal error during unmarshaling (input_value: ill-formed message),</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">possibly because client and server have been compiled with differentversions of the OCaml compiler.</span></div></div></blockquote><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class="">So assuming that is an accurate message -- and not a red herring -- it appears that now not only the versions if Unison have to match, but also the same version of OCaml!</div><div class=""><br class=""></div><div class="">So I download OCaml 4.08 to Raspbian, and successfully built and installed it:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""># ocaml -version</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">The OCaml toplevel, version 4.08.0</span></div></div></blockquote><div class=""><br class=""></div><div class="">I then went back to Unison 2.51, and did a:</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""># make clean</span></div></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""># make</span></div></blockquote><div class=""><br class=""></div><div class="">but whereas with OCaml 4.02 I just received a bunch of warnings, I now receive a fatal error when compiling Unison with OCaml 4.08 (to match the version that Unison on Brew was built with):</div><div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">ocamlopt: system.mli ---> system.cmi</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">ocamlopt -g -unsafe-string -I lwt -I ubase -I system -I fsmonitor -I fsmonitor/linux -I fsmonitor/windows -I system/generic -I lwt/generic -c /opt/unison-2.51.2/src/system.mli</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">ocamlopt: system.ml ---> system.cmx</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">ocamlopt -g -unsafe-string -I lwt -I ubase -I system -I fsmonitor -I fsmonitor/linux -I fsmonitor/windows -I system/generic -I lwt/generic -c /opt/unison-2.51.2/src/system.ml</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><b class="">File "/opt/unison-2.51.2/src/system.ml", line 1</b>:</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #c33720" class=""><b class="">Error</b></span><span style="font-variant-ligatures: no-common-ligatures" class="">: The implementation /opt/unison-2.51.2/src/system.ml</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> does not match the interface system.cmi:</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> Values do not match:</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> val link : ?follow:bool -> string -> string -> unit</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> is not included in</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> val link : fspath -> fspath -> unit</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> <b class="">File "/opt/unison-2.51.2/src/system/system_intf.ml", line 70, characters 0-35</b>:</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> Expected declaration</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> <b class="">File "/opt/unison-2.51.2/src/system/system_generic.ml", line 50, characters 4-8</b>:</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> Actual declaration</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Makefile.OCaml:422: recipe for target 'system.cmx' failed</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">make[1]: *** [system.cmx] Error 2</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">make[1]: Leaving directory '/opt/unison-2.51.2/src'</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Makefile:6: recipe for target 'text' failed</span></div></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">make: *** [text] Error 2</span></div></div></blockquote><div class=""><br class=""></div><div class="">Unfortunately, I don't know anything about OCaml to know exactly what this means or how to fix it.</div><div class=""><br class=""></div><div class="">Any ideas on how to fix this? The Brew version of OCaml for macOS is actually 4.0.9.</div><div class=""><br class=""></div><div class="">BTW - I have been using Unison 2.40 on macOS + Raspbian + CentOS Linux for many years, but have decided it is probably time for an upgrade.</div><div class=""><br class=""></div><div class="">Any help would be appreciated.</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">Dave.</div><div class=""><br class=""></div></body></html>