Remove cxx and autocxx

Notably this gets rid of the Cargo target directory inside build directories,
in favor of "target/" at workspace root.
This commit is contained in:
Johannes Altmanninger
2024-01-07 21:38:49 +01:00
parent 8a67abfeaa
commit 29bd6eebd0
16 changed files with 29 additions and 970 deletions

View File

@@ -64,69 +64,19 @@ fn main() {
}
let rust_dir = env!("CARGO_MANIFEST_DIR");
let target_dir =
std::env::var("FISH_RUST_TARGET_DIR").unwrap_or(format!("{}/{}", rust_dir, "target/"));
let cpp_fish_src_dir = format!("{}/{}", rust_dir, "src/");
// Where cxx emits its header.
let cxx_include_dir = format!("{}/{}", target_dir, "cxxbridge/rust/");
// If FISH_BUILD_DIR is given by CMake, then use it; otherwise assume it's at build.
let fish_build_dir =
std::env::var("FISH_BUILD_DIR").unwrap_or(format!("{}/{}", rust_dir, "build/"));
println!("cargo:rustc-env=FISH_BUILD_DIR={fish_build_dir}");
// Where autocxx should put its stuff.
let autocxx_gen_dir = std::env::var("FISH_AUTOCXX_GEN_DIR")
.unwrap_or(format!("{}/{}", fish_build_dir, "fish-autocxx-gen/"));
let mut build = cc::Build::new();
// Add to the default library search path
build.flag_if_supported("-L/usr/local/lib/");
rsconf::add_library_search_path("/usr/local/lib");
let mut detector = Target::new_from(build).unwrap();
// Keep verbose mode on until we've ironed out rust build script stuff
// Note that if autocxx fails to compile any rust code, you'll see the full and unredacted
// stdout/stderr output, which will include things that LOOK LIKE compilation errors as rsconf
// tries to build various test files to try and figure out which libraries and symbols are
// available. IGNORE THESE and scroll to the very bottom of the build script output, past all
// these errors, to see the actual issue.
detector.set_verbose(true);
detect_features(detector);
// Emit cxx junk.
// This allows "Rust to be used from C++"
// This must come before autocxx so that cxx can emit its cxx.h header.
let source_files = vec![
"fish-rust/src/fish_key_reader.rs",
"fish-rust/src/fish_indent.rs",
"fish-rust/src/fish.rs",
];
cxx_build::bridges(&source_files)
.flag_if_supported("-std=c++11")
.include(&cpp_fish_src_dir)
.include(&fish_build_dir) // For config.h
.include(&cxx_include_dir) // For cxx.h
.flag("-Wno-comment")
.compile("fish-rust");
// Emit autocxx junk.
// This allows "C++ to be used from Rust."
let include_paths = [&cpp_fish_src_dir, &fish_build_dir, &cxx_include_dir];
let mut builder = autocxx_build::Builder::new("fish-rust/src/ffi.rs", include_paths);
// Use autocxx's custom output directory unless we're being called by `rust-analyzer` and co.,
// in which case stick to the default target directory so code intelligence continues to work.
if std::env::var("RUSTC_WRAPPER").map_or(true, |wrapper| {
!(wrapper.contains("rust-analyzer") || wrapper.contains("intellij-rust-native-helper"))
}) {
// We need this reassignment because of how the builder pattern works
builder = builder.custom_gendir(autocxx_gen_dir.into());
}
let mut b = builder.build().unwrap();
b.flag_if_supported("-std=c++11")
.flag("-Wno-comment")
.compile("fish-rust-autocxx");
rsconf::rebuild_if_paths_changed(&source_files);
}
/// Dynamically enables certain features at build-time, without their having to be explicitly