qjsc usage?

[C-Lunn]

Hi,

How do I use qjsc? I've been an on hours-long rabbit hole trying to improve my Typst compile times -- the Pintora JS extension compiles on every document compile and I feel like I could speed that up by precompiling.

I downloaded qjsc for linux and I get ENOENT and feel like I'm going insane -- even running with strace doesn't help as it doesn't tell me what file I'm missing.
I downloaded qjsc for Windows and the program silently exits with no feedback no matter what arguments I use.

https://bellard.org/quickjs/quickjs.html#qjsc-compiler-1 this documentation tells me that the compiler exists, but not how to use it.

Can someone please guide me? Thanks.

[saghul]

Look at the codegen Makefile target as an example.

The first thing it does is compile the repl JS file to a C file that it's then added to the project so the bytecode can be evaluated.

Is this the use case you have?

[guest271314]

permutations.js.zip

[bnoordhuis]

What am I missing here?

You must link against libqjs.a. If you use the cmake build, target_link_libraries(yourexe, qjs) takes care of that.

[guest271314]

@bnoordhuis My understanding was that qjsc is a standalone executable that can be used to compile JavaScript to C and that C is then compiled to an executable. E.g., https://dustin.boston/blog/2404081/.

Evidently QUickJS NG changed the behaviour of qjsc.

I'm just asking for a complete working example - outside of using cmake. However, if QuickJS NG depends on cmake and a Makefile to work, spelling out all of the step somewhere, for example here, wouldn't hurt anything. You can see my failed attempts to get this working above.

[bnoordhuis]

Assuming you already built libqjs.a: qjsc -e -o hello.c hello.js && cc -o hello hello.c libqjs.a - add -I if quickjs.h lives in another directory.

If you don't have libqjs.a prebuilt: cc -o hello hello.c quickjs.c quickjs-libc.c libbf.c libunicode.c cutils.c

[guest271314]

Tried both. Neither works, so far.