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Allow building from source

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This commit is contained in:
Bradlee Speice 2024-12-30 17:51:10 -05:00
parent 4b4f1a93b7
commit 9edd9fb7b6
6 changed files with 350 additions and 28 deletions
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6
.gitignore vendored
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@ -1,6 +1,4 @@
debug/
target/
Cargo.lock
.cargo/ .cargo/
.idea/
.vscode/ .vscode/
target/

3
.gitmodules vendored Normal file
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@ -0,0 +1,3 @@
[submodule "slang-sys/slang"]
path = slang-sys/slang
url = https://github.com/shader-slang/slang.git

312
Cargo.lock generated Normal file
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@ -0,0 +1,312 @@
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4
slang-sys/Cargo.toml
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@ -4,7 +4,7 @@ version = "0.1.0"
edition = "2021" edition = "2021"
license = "MIT OR Apache-2.0" license = "MIT OR Apache-2.0"
publish = false publish = false
build = "build.rs"
[build-dependencies] [build-dependencies]
bindgen = "0.69.4" bindgen = "0.71"
cmake = "0.1"

52
slang-sys/build.rs
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@ -1,19 +1,38 @@
extern crate bindgen; extern crate bindgen;
use std::env; use std::env;
use std::path::{Path, PathBuf}; use std::path::PathBuf;
fn do_link_env() -> Option<PathBuf> {
println!("cargo:rerun-if-env-changed=SLANG_DIR");
Some(env::var("SLANG_DIR").ok()?.into())
}
fn do_link_cmake() -> Option<PathBuf> {
let cmake_output = cmake::Config::new("./slang")
// https://github.com/shader-slang/slang/issues/5832#issuecomment-2533324982
.define("CMAKE_SKIP_INSTALL_RULES", "ON")
.build_target("slang")
.build();
for build_type in ["Debug", "Release"] {
let slang_dir = cmake_output.join("build").join(build_type);
if slang_dir.exists() {
return Some(slang_dir);
}
}
None
}
fn main() { fn main() {
println!("cargo:rerun-if-env-changed=SLANG_DIR"); println!("cargo:rerun-if-changed=build.rs");
let slang_dir = env::var("SLANG_DIR").map(PathBuf::from).expect(
"Environment variable `SLANG_DIR` should be set to the directory of a Slang installation.",
);
let out_dir = env::var("OUT_DIR") let slang_dir = do_link_env()
.map(PathBuf::from) .or_else(do_link_cmake)
.expect("Couldn't determine output directory."); .expect("Unable to locate slang");
println!("cargo:rustc-link-lib=dylib=slang");
link_libraries(&slang_dir); println!("cargo:rustc-link-search=native={}", slang_dir.join("lib").display());
bindgen::builder() bindgen::builder()
.header(slang_dir.join("include/slang.h").to_str().unwrap()) .header(slang_dir.join("include/slang.h").to_str().unwrap())
@ -40,21 +59,10 @@ fn main() {
.derive_copy(true) .derive_copy(true)
.generate() .generate()
.expect("Couldn't generate bindings.") .expect("Couldn't generate bindings.")
.write_to_file(out_dir.join("bindings.rs")) .write_to_file(format!("{}/bindings.rs", env::var("OUT_DIR").unwrap()))
.expect("Couldn't write bindings."); .expect("Couldn't write bindings.");
} }
fn link_libraries(slang_dir: &Path) {
let lib_dir = slang_dir.join("lib");
if !lib_dir.is_dir() {
panic!("Couldn't find the `lib` subdirectory in the Slang installation directory.")
}
println!("cargo:rustc-link-search=native={}", lib_dir.display());
println!("cargo:rustc-link-lib=dylib=slang");
}
#[derive(Debug)] #[derive(Debug)]
struct ParseCallback {} struct ParseCallback {}

1
slang-sys/slang Submodule

@ -0,0 +1 @@
Subproject commit 4003d337a7e9b84a8c0609bb8069460f82f5d673