Re: Build for Alpine Linux

[Hans Hagen <j.hagen@xs4all.nl>]

On 4/11/2018 10:08 PM, Brian Hunt wrote:
> So here's what I've got for a TODO so far to get ConTeXt working on 
> Alpine Linux with musl (subject to item #6, mtx-context.lua not being 
> found):
> 
> 1. Add the musl test to first-setup.sh
> 2. Add the same musl test to tex/setuptex

no problem adding a robust test there

> 3. Add texlua (and texluac?) to
>    a. the setup rsync bin/ directories
>    b. the tex/texmf-linuxmusl(|-ppc|-64)

we don't use texluac, don't need texlua on windows and on linux texlua 
is just a symlink

if musl needs different bin then there should be a different initial 
download i think because basically we're now talking of: windows, osx, 
linux, linuxmusl (a different species)

> 4. Update mtxrun
> 
> Here's code that ought to work for detecting musl in mtxrun.  Around 
> line 3721 of the mtxrun add:
> 
>      if find(architecture,"x86_64",1,true) then
>        platform="linux-64"
>      elseif find(architecture,"ppc",1,true) then
>        platform="linux-ppc"
>      else
>        platform="linux"
>      end
> +   if resultof("ldd --version 2>&1"):find("musl") ~= nil then
> +     platform = platform:gsub("linux", "linuxmusl")
> +   end

that's not going to happen, some system call 9each run) in order to 
determine what linux species we run ... (there are a few calls but these 
are never used becasue we use HOSTTYPE (if needed we can set one 
ourselves on these platforms)

isn't there some magic env var that tels if musl is used? do programs 
and scripts really have to jumpo through such loops

> 5. Note that in tex/setuptex, there's evidently no way to get the 
> current script so one has to explicitly provide the TeX directory 
> (appears to be a BusyBox bug).
> 6. `context` is unable to locate `mtx-context.lua`.  Some tracker output 
> sheds some light:
>    i. context --trackers=resolvers.expansions is identical
>    ii. context --trackers=resolvers.details,resolvers.details differs, 
> with the output attached.  Note that to keep the comparison short I 
> removed lines that differed only because `linux` had been changed to 
> `linuxmusl`.
> 
> Will keep plugging away to see if I can determine why `mtx-context.lua` 
> cannot be found on Alpine Linux.
hm, so musl is far from a drop=in for glib or do i get it wrong

Hans

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                                           Hans Hagen | PRAGMA ADE
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