mirror of https://github.com/pyodide/pyodide.git
76 lines
1.7 KiB
Python
76 lines
1.7 KiB
Python
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import subprocess
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from . import common
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def test_emulate_function(tmpdir):
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with tmpdir.as_cwd():
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with open("library.c", "w") as f:
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f.write(
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"""\
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#include <stdio.h>
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void foo() {
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puts("hello from library");
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}"""
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)
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with open("main.c", "w") as f:
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f.write(
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"""\
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#include <stdio.h>
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#include <dlfcn.h>
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int main() {
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puts("hello from main");
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void *f = dlopen("library.wasm", RTLD_NOW);
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if (!f) {
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puts("cannot load side module");
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puts(dlerror());
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return 1;
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}
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typedef void (*voidfunc)();
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voidfunc g = (voidfunc) dlsym(f, "foo");
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if (!g) {
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puts("cannot load side function");
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return 1;
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} else {
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g();
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}
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return 0;
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}
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"""
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)
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subprocess.run(
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[
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"emcc",
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"-s",
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"SIDE_MODULE=1",
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"library.c",
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"-o",
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"library.wasm",
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"-s",
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"EMULATE_FUNCTION_POINTER_CASTS=1",
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"-s",
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"EXPORT_ALL=1",
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],
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check=True,
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env=common.env,
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)
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subprocess.run(
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[
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"emcc",
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"-s",
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"MAIN_MODULE=1",
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"main.c",
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"--embed-file",
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"library.wasm",
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"-s",
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"EMULATE_FUNCTION_POINTER_CASTS=1",
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],
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check=True,
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env=common.env,
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)
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out = subprocess.run(
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["node", "a.out.js"], capture_output=True, check=True, env=common.env
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)
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assert out.stdout == b"hello from main\nhello from library\n"
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