I'm not sure that I'm understanding your question correctly, so let me
summarize the steps needed to cross-compile a lisp library in more details:
1. Cross-compile ECL itself. You can do this by essentially the same
steps as for iOS/Android detailed in the INSTALL file: first build a
"host ECL" (in your case a version of ECL that runs on Intel Macs), then
run configure with `--host` and `--with-cross-config` options and make
(this will use the host ECL to compile a target ECL, i.e. a version of
ECL which will run on the M1).
2. Start the host ECL built in step 1, set up the compiler paths and
flags as shown in the examples that I linked in my previous email.
3. Call compile-file, c:build-static-library or c:build-shared-library
etc. as usual. This will produce a binary for the target system (in your
case a M1 Mac) which is linked against the target ECL.
Due to that, you can't directly load the fasl's that this
compilation procedure produces into the host ECL. Thus if you have
dependencies between files which necessitate loading files (for instance
if you define a macro in one file and use it in another), the easiest
option is to use the bytecompiler to load files. If this fails, you may
compile fasls using the default configuration of the host ECL (that is
restore all paths and flags set in step 2 to their default values) and
then load that.
I hope this explains how everything works.
Best,
Marius
Am 27.06.21 um 23:00 schrieb Joshua Armenta:
Thanks, Marius.
So for Intel to M1, we’d need the binaries for M1 and use the byte compiler?
Sent from my iPhone
On Jun 27, 2021, at 11:32, Marius Gerbershagen
<marius.gerbersha...@gmail.com> wrote:
Dear Joshua,
it is possible to cross-compile lisp code using ECL. Basically, one
needs to set up paths the compiler and linker binaries as well as paths
to the include and library directories in the host compiler (built in
the first step of cross-compiling ECL itself, see the INSTALL file for
instructions) to point to the ones for the target system.
One can then call `compile-file` as usual, taking care to either load
files with the bytecompiler or compiling twice (once for the target and
once for the host) before loading.
For an example how this works, see the EQL5 project
https://gitlab.com/eql/EQL5-Android/
<https://gitlab.com/eql/EQL5-Android>. You could also look at
https://gitlab.com/spaghettisalat/jffi_repl_example/blob/master/app/src/main/lisp/asdf_libs/compile.lisp
<https://gitlab.com/spaghettisalat/jffi_repl_example/blob/master/app/src/main/lisp/asdf_libs/compile.lisp>
for an example with a basic asdf integration.
Best regards,
Marius Gerbershagen
Am 26.06.21 um 19:43 schrieb Joshua Armenta:
> Is there a flag to set another architecture type during the compilation
> process?
>
> For example I’m on an Intel Mac but I want to make a project build for
> ARM Mac (or a fat binary) to not use Rosetta 2 for that version.
>
> Or, I’m on a Mac but want to cross compile the lisp project/static
> library to windows.
>
> Trying to integrate some code into a CI platform. Thx!
>
> Sent from my iPhone
>
>
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