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extern crate cc;
extern crate bindgen;
extern crate glob;
use std::env;
use std::fs;
use std::path::PathBuf;
fn link(name: &str, bundled: bool) {
use std::env::var;
let target = var("TARGET").unwrap();
let target: Vec<_> = target.split('-').collect();
if target.get(2) == Some(&"windows") {
println!("cargo:rustc-link-lib=dylib={}", name);
if bundled && target.get(3) == Some(&"gnu") {
let dir = var("CARGO_MANIFEST_DIR").unwrap();
println!("cargo:rustc-link-search=native={}/{}", dir, target[0]);
}
}
}
fn fail_on_empty_directory(name: &str) {
if fs::read_dir(name).unwrap().count() == 0 {
println!(
"The `{}` directory is empty, did you forget to pull the submodules?",
name
);
println!("Try `git submodule update --init --recursive`");
panic!();
}
}
fn bindgen_rocksdb() {
let bindings = bindgen::Builder::default()
.header("rocksdb/include/rocksdb/c.h")
.blacklist_type("max_align_t") // https://github.com/rust-lang-nursery/rust-bindgen/issues/550
.ctypes_prefix("libc")
.generate()
.expect("unable to generate rocksdb bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("unable to write rocksdb bindings");
}
fn build_rocksdb() {
let mut config = cc::Build::new();
config.include("rocksdb/include/");
config.include("rocksdb/");
config.include("rocksdb/third-party/gtest-1.7.0/fused-src/");
if cfg!(feature = "snappy") {
config.define("SNAPPY", Some("1"));
config.include("snappy/");
}
if cfg!(feature = "lz4") {
config.define("LZ4", Some("1"));
config.include("lz4/lib/");
}
if cfg!(feature = "zstd") {
config.define("ZSTD", Some("1"));
config.include("zstd/lib/");
config.include("zstd/lib/dictBuilder/");
}
if cfg!(feature = "zlib") {
config.define("ZLIB", Some("1"));
config.include("zlib/");
}
if cfg!(feature = "bzip2") {
config.define("BZIP2", Some("1"));
config.include("bzip2/");
}
config.include(".");
config.define("NDEBUG", Some("1"));
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let mut lib_sources = include_str!("rocksdb_lib_sources.txt")
.split(" ")
.collect::<Vec<&'static str>>();
// We have a pregenerated a version of build_version.cc in the local directory
lib_sources = lib_sources
.iter()
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.cloned()
.filter(|file| *file != "util/build_version.cc")
.collect::<Vec<&'static str>>();
if cfg!(target_os = "macos") {
config.define("OS_MACOSX", Some("1"));
config.define("ROCKSDB_PLATFORM_POSIX", Some("1"));
config.define("ROCKSDB_LIB_IO_POSIX", Some("1"));
}
if cfg!(target_os = "linux") {
config.define("OS_LINUX", Some("1"));
config.define("ROCKSDB_PLATFORM_POSIX", Some("1"));
config.define("ROCKSDB_LIB_IO_POSIX", Some("1"));
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// COMMON_FLAGS="$COMMON_FLAGS -fno-builtin-memcmp"
}
if cfg!(target_os = "freebsd") {
config.define("OS_FREEBSD", Some("1"));
config.define("ROCKSDB_PLATFORM_POSIX", Some("1"));
config.define("ROCKSDB_LIB_IO_POSIX", Some("1"));
}
if cfg!(target_os = "windows") {
link("rpcrt4", false);
link("shlwapi", false);
config.define("OS_WIN", Some("1"));
// Remove POSIX-specific sources
lib_sources = lib_sources
.iter()
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.cloned()
.filter(|file| match *file {
"port/port_posix.cc" |
"env/env_posix.cc" |
"env/io_posix.cc" => false,
_ => true,
})
.collect::<Vec<&'static str>>();
// Add Windows-specific sources
lib_sources.push("port/win/port_win.cc");
lib_sources.push("port/win/env_win.cc");
lib_sources.push("port/win/env_default.cc");
lib_sources.push("port/win/win_logger.cc");
lib_sources.push("port/win/io_win.cc");
lib_sources.push("port/win/win_thread.cc");
}
if cfg!(target_env = "msvc") {
config.flag("-EHsc");
} else {
config.flag("-std=c++11");
// this was breaking the build on travis due to
// > 4mb of warnings emitted.
config.flag("-Wno-unused-parameter");
}
for file in lib_sources {
let file = "rocksdb/".to_string() + file;
config.file(&file);
}
config.file("build_version.cc");
config.cpp(true);
config.compile("librocksdb.a");
}
fn build_snappy() {
let mut config = cc::Build::new();
config.include("snappy/");
config.include(".");
config.define("NDEBUG", Some("1"));
if cfg!(target_env = "msvc") {
config.flag("-EHsc");
} else {
config.flag("-std=c++11");
}
config.file("snappy/snappy.cc");
config.file("snappy/snappy-sinksource.cc");
config.file("snappy/snappy-c.cc");
config.cpp(true);
config.compile("libsnappy.a");
}
fn build_lz4() {
let mut compiler = cc::Build::new();
compiler
.file("lz4/lib/lz4.c")
.file("lz4/lib/lz4frame.c")
.file("lz4/lib/lz4hc.c")
.file("lz4/lib/xxhash.c");
compiler.opt_level(3);
match env::var("TARGET").unwrap().as_str()
{
"i686-pc-windows-gnu" => {
compiler.flag("-fno-tree-vectorize");
},
_ => {}
}
compiler.compile("liblz4.a");
}
fn build_zstd() {
let mut compiler = cc::Build::new();
compiler.include("zstd/lib/");
compiler.include("zstd/lib/common");
compiler.include("zstd/lib/legacy");
let globs = &[
"zstd/lib/common/*.c",
"zstd/lib/compress/*.c",
"zstd/lib/decompress/*.c",
"zstd/lib/dictBuilder/*.c",
"zstd/lib/legacy/*.c",
];
for pattern in globs {
for path in glob::glob(pattern).unwrap() {
let path = path.unwrap();
compiler.file(path);
}
}
compiler.opt_level(3);
compiler.define("ZSTD_LIB_DEPRECATED", Some("0"));
compiler.compile("libzstd.a");
}
fn build_zlib() {
let mut compiler = cc::Build::new();
let globs = &[
"zlib/*.c"
];
for pattern in globs {
for path in glob::glob(pattern).unwrap() {
let path = path.unwrap();
compiler.file(path);
}
}
compiler.opt_level(3);
compiler.compile("libz.a");
}
fn build_bzip2() {
let mut compiler = cc::Build::new();
compiler
.file("bzip2/blocksort.c")
.file("bzip2/bzlib.c")
.file("bzip2/compress.c")
.file("bzip2/crctable.c")
.file("bzip2/decompress.c")
.file("bzip2/huffman.c")
.file("bzip2/randtable.c");
compiler
.define("_FILE_OFFSET_BITS", Some("64"))
.define("BZ_NO_STDIO", None);
compiler.opt_level(3);
compiler.compile("libbz2.a");
}
fn try_to_find_and_link_lib(lib_name: &str) -> bool {
if let Ok(lib_dir) = env::var(&format!("{}_LIB_DIR", lib_name)) {
println!("cargo:rustc-link-search=native={}", lib_dir);
let mode = match env::var_os(&format!("{}_STATIC", lib_name)) {
Some(_) => "static",
None => "dylib",
};
println!("cargo:rustc-link-lib={}={}", mode, lib_name.to_lowercase());
return true;
}
false
}
fn main() {
println!("cargo:rerun-if-changed=build.rs");
println!("cargo:rerun-if-changed=rocksdb/");
println!("cargo:rerun-if-changed=snappy/");
println!("cargo:rerun-if-changed=lz4/");
println!("cargo:rerun-if-changed=zstd/");
println!("cargo:rerun-if-changed=zlib/");
println!("cargo:rerun-if-changed=bzip2/");
fail_on_empty_directory("rocksdb");
fail_on_empty_directory("snappy");
fail_on_empty_directory("lz4");
fail_on_empty_directory("zstd");
fail_on_empty_directory("zlib");
fail_on_empty_directory("bzip2");
bindgen_rocksdb();
if !try_to_find_and_link_lib("ROCKSDB") {
build_rocksdb();
}
if cfg!(feature = "snappy") && !try_to_find_and_link_lib("SNAPPY") {
build_snappy();
}
if cfg!(feature = "lz4") && !try_to_find_and_link_lib("LZ4") {
build_lz4();
}
if cfg!(feature = "zstd") && !try_to_find_and_link_lib("ZSTD") {
build_zstd();
}
if cfg!(feature = "zlib") && !try_to_find_and_link_lib("ZLIB") {
build_zlib();
}
if cfg!(feature = "bzip2") && !try_to_find_and_link_lib("BZIP2") {
build_bzip2();
}
}