[vbox-dev] VirtualBox-5.1.20a fails to compile - linux 32-bit

[John Frankish]

> > if readelf -S /usr/src/VirtualBox-5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.r0|grep -q "[cd]tors"; then echo "Found ctors/dtors in > > /usr/src/VirtualBox-5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.r0!"; exit 1; fi
> > /etc/init.d/tc-functions: 72: Syntax error: Bad substitution
> > kmk: *** [/usr/src/VirtualBox-5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.r0] Error 2
> > kmk: *** Deleting file `/usr/src/VirtualBox-5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.r0'
> > kmk: *** [/usr/src/VirtualBox-5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.r0] Deleting file `/usr/src/VirtualBox-
> > 5.1.20/out/linux.x86/release/obj/tstLdrObjR0/tstLdrObjR0.debug'
> >
> > I have not been able to fix the one above.
> >
> you get a lot of
>
> /etc/init.d/tc-functions: 72: Syntax error: Bad substitution
> 
> I could only find out that this file is related to Tiny Core Linux, but 
> not what it does (especially not why the heck it gets executed all the 
> time as part of executing kmk recipes - the SHELL variable should be 
> pointing to kmk_ash, and I wouldn't see why it would look at this file).
> 
> I suspect that this causes a lot of confusion (and it's very obviously 
> totally unrelated to VirtualBox)...
> 
Indeed, the $SHELL variable looks to be the problem:

$ echo $PATH
/usr/src/VirtualBox-5.1.20/tools/linux.x86/bin:/usr/src/VirtualBox-5.1.20/kBuild/bin/linux.x86:/home/tc/.local/bin:/usr/local/sbin:/usr/local/bin:/apps/bin:/usr/sbin:/usr/bin:/sbin:/bin:/etc/sysconfig/tcedir/ondemand

$ which kmk_ash
/usr/src/VirtualBox-5.1.20/kBuild/bin/linux.x86/kmk_ash

$ echo $SHELL
/bin/sh

..but shouldn't "source ./env.sh" take care of that?

What is the best way to set $SHELL, so that "kmk all" works?