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Editorial Team
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Asked: 2026-05-23T21:46:50+00:00

I am trying to build and use SpiderMonkey I compiled (for my academic research)

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I am trying to build and use SpiderMonkey I compiled (for my academic research) with firefox 5 on a windows machine, but when I try to run firefox I get “missing JS_InitCTypesClass function in mozjs.dll” error.

I downloaded SpiderMonkey code and I built it (without any changes) using MozillaBuild.
Than I copied to new DLL to the firefox directory (renaming the DLL name to mozjs.dll) and tried to execute firefox. At this point I got the error I wrote.

Also, checking using exported function viewer I noticed that the original mozjs.dll has 777 exported functions, while the one I compiled has only 771 functions, so I guess the function is really missing.

Any ideas how can I build a custom SpiderMonkey and use it with FF5 ?

Thanks a lot for your help!

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1 Answer

  1. Editorial Team

    You probably just want to make sure that the way you configure SpiderMonkey matches what happens at http://hg.mozilla.org/mozilla-central/file/a0372b031aac/configure.in#l9484

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