forked from M-Labs/artiq-zynq
96 lines
2.9 KiB
Rust
96 lines
2.9 KiB
Rust
fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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llvm_libunwind::compile_cpp();
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llvm_libunwind::compile_c();
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}
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mod llvm_libunwind {
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use std::path::Path;
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fn setup_options(cfg: &mut cc::Build) {
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cfg.no_default_flags(true);
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cfg.warnings(false);
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cfg.flag("-nostdlib");
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cfg.flag("-ffreestanding");
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cfg.flag("-fno-PIC");
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cfg.flag("-Isrc");
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cfg.flag("-isystem../include");
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cfg.flag("-fno-stack-protector");
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cfg.flag("--target=armv7-none-eabihf");
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cfg.flag("-O2");
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cfg.flag("-std=c99");
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cfg.flag("-fstrict-aliasing");
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cfg.flag("-fvisibility=hidden");
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cfg.flag_if_supported("-fvisibility-global-new-delete-hidden");
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cfg.define("_LIBUNWIND_IS_BAREMETAL", Some("1"));
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cfg.define("_LIBUNWIND_NO_HEAP", Some("1"));
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cfg.define("_LIBUNWIND_HAS_NO_THREADS", Some("1"));
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cfg.define("NDEBUG", Some("1"));
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// libunwind expects a __LITTLE_ENDIAN__ macro to be set for LE archs, cf. #65765
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cfg.define("__LITTLE_ENDIAN__", Some("1"));
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cfg.define("_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS", None);
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cfg.flag("-U_FORTIFY_SOURCE");
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cfg.define("_FORTIFY_SOURCE", Some("0"));
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}
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pub fn compile_c() {
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let cfg = &mut cc::Build::new();
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setup_options(cfg);
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cfg.compiler("clang");
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cfg.flag("-funwind-tables");
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let unwind_sources = vec![
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"Unwind-sjlj.c",
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"UnwindLevel1-gcc-ext.c",
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"UnwindLevel1.c",
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"UnwindRegistersRestore.S",
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"UnwindRegistersSave.S",
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];
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let root = Path::new("../llvm_libunwind");
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cfg.include(root.join("include"));
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for src in unwind_sources {
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println!("cargo:rerun-if-changed={}", src);
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cfg.file(root.join("src").join(src));
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}
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cfg.compile("unwind_c");
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}
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/// Compile the libunwind C/C++ source code.
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pub fn compile_cpp() {
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let cfg = &mut cc::Build::new();
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setup_options(cfg);
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cfg.compiler("clang++");
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cfg.cpp(true);
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cfg.cpp_set_stdlib(None);
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// c++ options
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cfg.flag("-std=c++11");
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cfg.flag("-nostdinc++");
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cfg.flag("-fno-exceptions");
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cfg.flag("-fno-rtti");
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cfg.flag("-fstrict-aliasing");
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cfg.flag("-funwind-tables");
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cfg.flag("-fvisibility=hidden");
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cfg.flag_if_supported("-fvisibility-global-new-delete-hidden");
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let unwind_sources = vec![
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"Unwind-EHABI.cpp",
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"Unwind-seh.cpp",
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"libunwind.cpp"
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];
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let root = Path::new("../llvm_libunwind");
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cfg.include(root.join("include"));
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for src in unwind_sources {
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println!("cargo:rerun-if-changed={}", src);
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cfg.file(root.join("src").join(src));
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}
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cfg.compile("unwind_cpp");
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}
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}
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