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bearssl-rs
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bearssl-sys: break-up `build.rs` 

The `build.rs` is destined to get more cluttered as the autodetection
gets more optimial and Windows/non-amd64 arches are handled better.
main
Aydin Mercan 2022-10-06 20:20:12 +03:00
parent 70495f7fdc
commit ebd9663752
Signed by: jaiden
SSH Key Fingerprint: SHA256:vy6hjzotbn/MWZAbjzURNk3NL62EPkjoHsJ5xr/s7nk
9 changed files with 110 additions and 111 deletions
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4
Cargo.lock generated
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@ -278,9 +278,9 @@ checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
[[package]]
name = "proc-macro2"
version = "1.0.43"
version = "1.0.44"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
checksum = "7bd7356a8122b6c4a24a82b278680c73357984ca2fc79a0f9fa6dea7dced7c58"
dependencies = [
"unicode-ident",
]

1
bearssl-sys/Cargo.toml
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@ -5,6 +5,7 @@ version = "0.0.5-pre.0"
authors = ["Aydin Mercan <aydin@mercan.dev>"]
license = "BSD-3-Clause"
readme = "README.md"
build = "build/main.rs"
categories = ["cryptography", "no-std", "external-ffi-bindings"]
keywords = ["bearssl", "crypto", "tls", "ssl"]
edition = "2021"

109
bearssl-sys/build.rs
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@ -1,109 +0,0 @@
use std::env;
use std::path::PathBuf;
#[cfg(not(feature = "bundled"))]
static HEADER_PATH: &str = "wrapper.h";
#[cfg(feature = "bundled")]
static HEADER_PATH: &str = "bundled/inc/bearssl.h";
#[cfg(feature = "dont-assume-size_t-equals-uintptr_t")]
static CTYPES_PREFIX: &str = "::libc";
#[cfg(not(feature = "dont-assume-size_t-equals-uintptr_t"))]
static CTYPES_PREFIX: &str = "::core::ffi";
#[cfg(not(feature = "bundled"))]
fn bearssl_handle_linkage() {
#[cfg(not(unix))]
panic!("linking dynamically is currently supported in only unix targets");
println!("cargo:rustc-link-search=/lib");
println!("cargo:rustc-link-search=/usr/lib");
println!("cargo:rustc-link-search=/usr/local/lib");
println!("cargo:rustc-link-lib=dylib=bearssl");
}
#[cfg(feature = "bundled")]
#[cfg(target_arch = "x86_64")]
fn build_configure_arch_specific(build: &mut cc::Build) {
let compiler = build.get_compiler();
build.define("BR_64", "1");
if compiler.is_like_gnu() || compiler.is_like_clang() {
build.define("BR_INT128", "1");
} else if compiler.is_like_msvc() {
build.define("BR_UMUL128", "1");
}
#[cfg(target_feature = "sse2")]
build.define("BR_SSE2", "1");
#[cfg(target_feature = "aes")]
build.define("BR_AES_X86NI", "1");
}
#[cfg(feature = "bundled")]
#[cfg(not(target_arch = "x86_64"))]
fn build_configure_arch_specific(build: &mut cc::Build) {
#[cfg(target_pointer_width = 64)]
build.define("BR_64", "1");
}
#[cfg(feature = "bundled")]
#[cfg(unix)]
fn build_configure_os_specific(build: &mut cc::Build) {
build.define("BR_USE_UNIX_TIME", "1").define("BR_USE_URANDOM", "1");
}
#[cfg(feature = "bundled")]
#[cfg(windows)]
fn build_configure_os_specific(build: &mut cc::Build) {
build.define("BR_USE_WIN32_RAND", "1").define("BR_USE_WIN32_TIME", "1");
}
#[cfg(feature = "bundled")]
fn bearssl_handle_linkage() {
let mut build = cc::Build::new();
build_configure_os_specific(&mut build);
build_configure_arch_specific(&mut build);
build
.include("bundled/inc")
.files(
std::fs::read_dir("bundled/src")
.expect("failed to get bundled source path")
.map(|e| e.expect("failed to read get file entry").path()),
)
.static_flag(true)
.compile("bearssl");
println!("cargo:lib_dir={}", env::var("OUT_DIR").unwrap());
println!("cargo:rustc-link-lib=static=bearssl");
}
fn main() {
bearssl_handle_linkage();
let bindings = bindgen::builder()
.use_core()
.ctypes_prefix(CTYPES_PREFIX)
.header(HEADER_PATH)
.default_macro_constant_type(bindgen::MacroTypeVariation::Signed)
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
.allowlist_type("(br|BR)_.*")
.allowlist_var("(br|BR)_.*")
.allowlist_function("(br|BR)_.*")
.blocklist_type("__.*_t")
.blocklist_type("size_t")
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}

11
bearssl-sys/build/linkage.rs Normal file
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@ -0,0 +1,11 @@
#[cfg(not(feature = "bundled"))]
mod dynamichost;
#[cfg(feature = "bundled")]
mod bundled;
#[cfg(feature = "bundled")]
pub use bundled::{configure, HEADER_PATH};
#[cfg(not(feature = "bundled"))]
pub use dynamichost::{configure, HEADER_PATH};

24
bearssl-sys/build/linkage/bundled.rs Normal file
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@ -0,0 +1,24 @@
mod arch;
mod os;
pub static HEADER_PATH: &str = "bundled/inc/bearssl.h";
pub fn configure() {
let mut build = cc::Build::new();
os::configure(&mut build);
arch::configure(&mut build);
build
.include("bundled/inc")
.files(
std::fs::read_dir("bundled/src")
.expect("failed to get bundled source path")
.map(|e| e.expect("failed to read get file entry").path()),
)
.static_flag(true)
.compile("bearssl");
println!("cargo:lib_dir={}", std::env::var("OUT_DIR").unwrap());
println!("cargo:rustc-link-lib=static=bearssl");
}

24
bearssl-sys/build/linkage/bundled/arch.rs Normal file
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@ -0,0 +1,24 @@
#[cfg(target_arch = "x86_64")]
pub fn configure(build: &mut cc::Build) {
let compiler = build.get_compiler();
build.define("BR_64", "1");
if compiler.is_like_gnu() || compiler.is_like_clang() {
build.define("BR_INT128", "1");
} else if compiler.is_like_msvc() {
build.define("BR_UMUL128", "1");
}
#[cfg(target_feature = "sse2")]
build.define("BR_SSE2", "1");
#[cfg(target_feature = "aes")]
build.define("BR_AES_X86NI", "1");
}
#[cfg(not(target_arch = "x86_64"))]
pub fn configure(build: &mut cc::Build) {
#[cfg(target_pointer_width = 64)]
build.define("BR_64", "1");
}

9
bearssl-sys/build/linkage/bundled/os.rs Normal file
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@ -0,0 +1,9 @@
#[cfg(unix)]
pub fn configure(build: &mut cc::Build) {
build.define("BR_USE_UNIX_TIME", "1").define("BR_USE_URANDOM", "1");
}
#[cfg(windows)]
pub fn configure(build: &mut cc::Build) {
build.define("BR_USE_WIN32_RAND", "1").define("BR_USE_WIN32_TIME", "1");
}

11
bearssl-sys/build/linkage/dynamichost.rs Normal file
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@ -0,0 +1,11 @@
pub static HEADER_PATH: &str = "wrapper.h";
pub fn configure() {
#[cfg(not(unix))]
panic!("linking dynamically is currently supported in only unix targets");
println!("cargo:rustc-link-search=/lib");
println!("cargo:rustc-link-search=/usr/lib");
println!("cargo:rustc-link-search=/usr/local/lib");
println!("cargo:rustc-link-lib=dylib=bearssl");
}

28
bearssl-sys/build/main.rs Normal file
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@ -0,0 +1,28 @@
mod linkage;
use std::path::PathBuf;
fn main() {
linkage::configure();
let bindings = bindgen::builder()
.use_core()
.ctypes_prefix("::core::ffi")
.header(linkage::HEADER_PATH)
.default_macro_constant_type(bindgen::MacroTypeVariation::Signed)
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
.allowlist_type("(br|BR)_.*")
.allowlist_var("(br|BR)_.*")
.allowlist_function("(br|BR)_.*")
.blocklist_type("__.*_t")
.blocklist_type("size_t")
.generate_comments(false)
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(std::env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}