feat: Implement cross compilation for MSVC toolchain
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2 changed files with 156 additions and 27 deletions
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@ -3,7 +3,7 @@ name = "luajit2-sys"
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version = "0.0.2"
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description = "LuaJIT-2.1 FFI Bindings"
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authors = ["Aaron Loucks <aloucks@cofront.net>"]
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edition = "2018"
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edition = "2021"
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keywords = ["lua", "luajit", "script"]
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license = "MIT OR Apache-2.0"
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readme = "README.md"
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@ -16,5 +16,5 @@ libc = "0.2"
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[build-dependencies]
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bindgen = "0.64.0"
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cc = "1.0.40"
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cc = "1"
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fs_extra = "1.1.0"
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179
build.rs
179
build.rs
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@ -1,3 +1,4 @@
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use cc::Build;
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use fs_extra::dir;
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use fs_extra::dir::CopyOptions;
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use std::env;
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@ -6,38 +7,101 @@ use std::process::{Command, Stdio};
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const LIB_NAME: &str = "luajit";
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const LUAJIT_HEADERS: [&str; 4] = ["lua.h", "lualib.h", "lauxlib.h", "luajit.h"];
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const LUAJIT_SRC: [&str; 69] = [
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// LJCORE_O
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// The MSVC toolchain cannot compile this assembler file,
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// as it contains GNU-specific directives
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// "lj_vm.S",
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"lj_assert.c",
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"lj_gc.c",
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"lj_err.c",
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"lj_char.c",
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"lj_bc.c",
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"lj_obj.c",
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"lj_buf.c",
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"lj_str.c",
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"lj_tab.c",
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"lj_func.c",
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"lj_udata.c",
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"lj_meta.c",
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"lj_debug.c",
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"lj_prng.c",
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"lj_state.c",
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"lj_dispatch.c",
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"lj_vmevent.c",
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"lj_vmmath.c",
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"lj_strscan.c",
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"lj_strfmt.c",
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"lj_strfmt_num.c",
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"lj_serialize.c",
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"lj_api.c",
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"lj_profile.c",
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"lj_lex.c",
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"lj_parse.c",
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"lj_bcread.c",
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"lj_bcwrite.c",
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"lj_load.c",
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"lj_ir.c",
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"lj_opt_mem.c",
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"lj_opt_fold.c",
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"lj_opt_narrow.c",
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"lj_opt_dce.c",
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"lj_opt_loop.c",
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"lj_opt_split.c",
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"lj_opt_sink.c",
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"lj_mcode.c",
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"lj_snap.c",
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"lj_record.c",
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"lj_crecord.c",
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"lj_ffrecord.c",
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"lj_asm.c",
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"lj_trace.c",
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"lj_gdbjit.c",
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"lj_ctype.c",
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"lj_cdata.c",
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"lj_cconv.c",
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"lj_ccall.c",
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"lj_ccallback.c",
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"lj_carith.c",
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"lj_clib.c",
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"lj_cparse.c",
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"lj_lib.c",
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"lj_alloc.c",
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// LJLIB_O
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"lib_aux.c",
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"lib_base.c",
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"lib_math.c",
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"lib_bit.c",
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"lib_string.c",
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"lib_table.c",
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"lib_io.c",
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"lib_os.c",
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"lib_package.c",
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"lib_debug.c",
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"lib_jit.c",
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"lib_ffi.c",
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"lib_buffer.c",
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"lib_init.c",
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];
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fn main() {
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let luajit_dir = format!("{}/luajit", env!("CARGO_MANIFEST_DIR"));
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let out_dir = env::var("OUT_DIR").unwrap();
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let src_dir = format!("{}/luajit/src", out_dir);
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let lib_path = format!("{}/lib{}.a", &src_dir, LIB_NAME);
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dbg!(&luajit_dir);
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dbg!(&out_dir);
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dbg!(&src_dir);
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dbg!(&lib_path);
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let mut copy_options = CopyOptions::new();
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copy_options.overwrite = true;
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dir::copy(&luajit_dir, &out_dir, ©_options).expect("Failed to copy LuaJIT source");
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fn build_gcc(src_dir: &str) {
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let mut buildcmd = Command::new("make");
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buildcmd.current_dir(&src_dir);
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buildcmd.stderr(Stdio::inherit());
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buildcmd.arg("BUILDMODE=static");
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buildcmd.arg("--no-silent");
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// We do need to cross-compile even here, so that `lj_vm.o` is created
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// for the correct architecture.
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if env::var("CARGO_CFG_WINDOWS").is_ok() {
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buildcmd.arg("TARGET_SYS=Windows");
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buildcmd.arg("CROSS=x86_64-w64-mingw32-");
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}
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if cfg!(target_pointer_width = "32") {
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buildcmd.env("HOST_CC", "gcc -m32");
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buildcmd.arg("HOST_CC='gcc -m32'");
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buildcmd.arg("-e");
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} else {
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buildcmd.env("HOST_CC", "gcc");
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buildcmd.arg("HOST_CC='gcc'");
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}
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let mut child = buildcmd.spawn().expect("failed to run make");
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@ -50,11 +114,66 @@ fn main() {
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{
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panic!("Failed to build luajit");
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}
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}
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fn build_msvc(src_dir: &str, out_dir: &str) {
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let mut cc = Build::new();
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// cc can't handle many of the `cland-dl`-specific flags, so
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// we need to port them manually from a `make -n` run.
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cc.out_dir(out_dir)
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// `llvm-as` (which the clang-based toolchain for MSVC would use to compile `lj_vm.S`
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// assembler) doesn't support some of the GNU-specific directives.
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// However, the previous host-targeted compilation already created the
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// object, so we simply link that.
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.object(format!("{src_dir}/lj_vm.o"))
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.define("_FILE_OFFSET_BITS", "64")
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.define("_LARGEFILE_SOURCE", None)
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.define("LUA_MULTILIB", "\"lib\"")
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.define("LUAJIT_UNWIND_EXTERNAL", None)
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.flag("-fcolor-diagnostics")
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// Disable warnings
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.flag("/W0")
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.flag("/U _FORTIFY_SOURCE")
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// Link statically
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.flag("/MT")
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// Omit frame pointers
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.flag("/Oy");
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for f in LUAJIT_SRC {
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cc.file(format!("{src_dir}/{f}"));
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}
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cc.compile(LIB_NAME);
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}
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fn main() {
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let luajit_dir = format!("{}/luajit", env!("CARGO_MANIFEST_DIR"));
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let out_dir = env::var("OUT_DIR").unwrap();
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let src_dir = format!("{}/luajit/src", out_dir);
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dbg!(&luajit_dir);
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dbg!(&out_dir);
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dbg!(&src_dir);
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let mut copy_options = CopyOptions::new();
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copy_options.overwrite = true;
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dir::copy(&luajit_dir, &out_dir, ©_options).expect("Failed to copy LuaJIT source");
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// The first run builds with and for the host architecture.
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// This also creates all the tools and generated sources that a compilation needs.
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build_gcc(&src_dir);
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// Then, for cross-compilation, we can utilize those generated
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// sources to re-compile just the library.
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if env::var("CARGO_CFG_WINDOWS").is_ok() {
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build_msvc(&src_dir, &out_dir);
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}
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println!("cargo:lib-name={}", LIB_NAME);
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println!("cargo:include={}", src_dir);
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println!("cargo:rustc-link-search=native={}", src_dir);
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println!("cargo:rustc-link-lib=static={}", LIB_NAME);
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println!("cargo:rustc-link-search={}", out_dir);
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println!("cargo:rustc-link-lib={}", LIB_NAME);
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let mut bindings = bindgen::Builder::default();
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@ -74,14 +193,24 @@ fn main() {
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.ctypes_prefix("libc")
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.impl_debug(true)
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.use_core()
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.clang_arg("-Iluajit/src")
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.detect_include_paths(true)
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// Make it pretty
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.rustfmt_bindings(true)
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.sort_semantically(true)
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.merge_extern_blocks(true)
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.parse_callbacks(Box::new(bindgen::CargoCallbacks))
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.generate()
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.expect("Failed to generate bindings");
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.parse_callbacks(Box::new(bindgen::CargoCallbacks));
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let bindings = if env::var("CARGO_CFG_WINDOWS").is_ok() {
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bindings
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.clang_arg("-I/xwin/sdk/include/ucrt")
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.clang_arg("-I/xwin/sdk/include/um")
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.clang_arg("-I/xwin/sdk/include/shared")
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.clang_arg("-I/xwin/crt/include")
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.generate()
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.expect("Failed to generate bindings")
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} else {
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bindings.generate().expect("Failed to generate bindings")
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};
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let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
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bindings
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