[Larceny-users] building git version for flat1 (latin1)

[Sven Hartrumpf]

Thanks for the helpful answers, Will.

WC wrote, 2016-01-11:
> Good to hear from you, Sven.
> 
>> For older projects, I still need Latin-1, so I decided to build
>> the git version using the flat1 option.
>> I followed the file doc/HOWTO-BUILD and used Larceny 0.98 as the
>> host system. Steps 1 and 2 went smoothly.
>> For step 3, there was no ./larceny.bin in the top-level git directory,
>> but only in src/Rts/.
>> I used:
>> > cd src/Rts/
>> > ./larceny.bin -stopcopy -- src/Build/iasn-larceny-heap.fasl
>> 
>> Is this correct?
> 
> That might work, but I think larceny.bin is supposed to be
> copied out of src/Rts into the root directory.  It could be
> that our autobuild scripts do that but our HOWTO-BUILD file
> neglects to mention that step.

This made me reconsider my build and I started with a fresh
git repo and Larceny 0.98 as host system. This time it went
smoothly! (./larceny and ./larceny.bin exist in the git directory
at the right place.)

>> At what step should I change the environment variable LARCENY_ROOT
>> from pointing to Larceny 0.98 to the build git version?
> 
> I *think* LARCENY_ROOT is used only by the larceny and twobit
> shell scripts, so you should change LARCENY_ROOT after you've
> built larceny.bin and the heap files and before you start to
> use the larceny shell script to run the newly built system.
> In particular, you'll want to change LARCENY_ROOT before you
> compile the R7RS libraries.  The larceny script will itself
> set LARCENY_ROOT to a reasonable default if LARCENY_ROOT isn't
> already defined, but a prior definition of LARCENY_ROOT would
> prevent the newly built system from running.

Hence, I decided not to set LARCENY_ROOT in my shell.
Instead I try to get the right directory in my PATH variable.
And this worked, as said above.

A tiny refinement to HOWTO-BUILD:
At the beginning of 4., it might be better to write
./larceny (not larceny) in order to make sure the built system
(and not the host system) is called.

Greetings
Sven