Re: How do I build Spidermonkey 76 on windows? Can anybody point me in the right direction

On Thu, May 7, 2020 at 8:10 AM Miles <[email protected]> wrote:

> Hi everyone,
>
> We are trying to upgrade our Spidermonkey embedding (from a very old
> version 1.8.5) to the latest version.
> I have tried and failed to do this in the past as I just didn't have
> enough time with other work commitments. The last time I tried was a year
> or so ago, trying to upgrade to Spidermonkey 59 and I cracked a lot of the
> problems.
> Our team has now grown and I now have some help to try this again. In fact
> one of my colleagues has already posted a question here trying to find out
> information on what has changed between Spidermonkey 59 and 76...
>
> So I've downloaded spidermonkey 76 and successfully managed to build it
> and run the tests on Linux. Great start :-)
>
> However I'm completely at a loss as to how to build Spidermonkey on
> windows and I'm hoping someone can point me in the right direction...
>
> I downloaded mozillabuild from
> https://ftp.mozilla.org/pub/mozilla/libraries/win32/MozillaBuildSetup-Latest.exe
> and installed it. I have Visual Studio 2017 installed as well.
>
> In mozillabuild I then run the 'start-shell.bat' file to start the mingw32
> environment and go to the directory where I have extracted the spidermonkey
> source.
> I then do the following to try to build a debug build
> cd js/src
> mkdir obj
> cd obj
> ../configure --prefix=xxxx --enable-debug --disable-optimize
>
> This fails very quickly with
>
> checking for vcs source checkout... no
> checking for a shell... C:/mozilla-build-3.3/msys/bin/sh.exe
> checking for host system type... x86_64-pc-mingw32
> checking for target system type... x86_64-pc-mingw32
> checking whether cross compiling... no
> checking for yasm... c:/mozilla-build-3.3/bin/yasm.exe
> checking yasm version... 1.3.0
> checking for the target C compiler... not found
> DEBUG: _cc: Trying clang-cl
> DEBUG: _cc: Trying gcc
> DEBUG: _cc: Trying clang
> ERROR: Cannot find the target C compiler
>
> I tried adding '--target=x86_64-pc-mingw32 --host=x86_64-pc-mingw32' to
> configure but that didn't help.
>
> How do I get the build environment to find/recognise VS2017?
> Years ago mozillabuild used to have batch files like
> 'start-shell-msvc2013-x64.bat'. The latest mozillabuild just has
> 'start-shell.bat' so I don't understand how it finds the Visual Studio 2017
> compilers (and it clearly doesn't!)
>
> I'm sure I'm being really stupid here and missing something obvious but
> can anybody help?
>

I don't know much about SpiderMonkey in particular, but Firefox uses Clang
to build on Windows now, so I assume it won't work for the JS shell either.
Maybe the generic Firefox build guide for Windows will help you get your
build environment set up correctly.

https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Windows_Prerequisites


> Assuming that I can sort this out, presumably I also need to install Rust
> to compile Spidermonkey. For Linux I installed the standalone Rust 1.43.0
> installer for platform 'x86_64-unknown-linux-gnu' from
> https://forge.rust-lang.org/infra/other-installation-methods.html and it
> all seemed to work.
> Presumably for windows I need platform 'x86_64-pc-windows-msvc'
>
> If anybody can help with this I would be very grateful.
>
> Many thanks in advance.
>
> Miles
> _______________________________________________
> dev-tech-js-engine mailing list
> [email protected]
> https://lists.mozilla.org/listinfo/dev-tech-js-engine
>