bbd4a4a500
* Enable copy-on-write heap initialization by default This commit enables the `Config::memfd` feature by default now that it's been fuzzed for a few weeks on oss-fuzz, and will continue to be fuzzed leading up to the next release of Wasmtime in early March. The documentation of the `Config` option has been updated as well as adding a CLI flag to disable the feature. * Remove ubiquitous "memfd" terminology Switch instead to forms of "memory image" or "cow" or some combination thereof. * Update new option names
24 lines
825 B
Rust
24 lines
825 B
Rust
use std::env;
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fn main() {
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println!("cargo:rerun-if-changed=src/helpers.c");
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cc::Build::new()
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.warnings(true)
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.define(
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&format!("CFG_TARGET_OS_{}", env::var("CARGO_CFG_TARGET_OS").unwrap()),
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None,
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)
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.file("src/helpers.c")
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.compile("wasmtime-helpers");
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// Check to see if we are on Unix and the `memory-init-cow` feature is
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// active. If so, enable the `memory_init_cow` rustc cfg so
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// `#[cfg(memory_init_cow)]` will work.
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let family = env::var("CARGO_CFG_TARGET_FAMILY").unwrap();
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let memory_init_cow = env::var("CARGO_FEATURE_MEMORY_INIT_COW").is_ok();
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let is_uffd = env::var("CARGO_FEATURE_UFFD").is_ok();
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if &family == "unix" && memory_init_cow && !is_uffd {
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println!("cargo:rustc-cfg=memory_init_cow");
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}
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}
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