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use crate::error::*;
use crate::types::AndroidTarget;
use std::path::{Path, PathBuf};
use std::process::Command;
#[derive(Debug)]
pub struct AndroidNdk {
ndk_path: PathBuf,
}
impl AndroidNdk {
pub fn from_env(sdk_path: Option<&Path>) -> Result<Self> {
let ndk_path = {
let ndk_path = std::env::var("ANDROID_NDK_ROOT")
.ok()
.or_else(|| std::env::var("ANDROID_NDK_PATH").ok())
.or_else(|| std::env::var("ANDROID_NDK_HOME").ok())
.or_else(|| std::env::var("NDK_HOME").ok());
if ndk_path.is_none()
&& sdk_path.is_some()
&& sdk_path.as_ref().unwrap().join("ndk-bundle").exists()
{
sdk_path.unwrap().join("ndk-bundle")
} else {
PathBuf::from(ndk_path.ok_or(AndroidError::AndroidNdkNotFound)?)
}
};
Ok(Self { ndk_path })
}
pub fn ndk_path(&self) -> &Path {
&self.ndk_path
}
pub fn toolchain_dir(&self) -> Result<PathBuf> {
let host_os = std::env::var("HOST").ok();
let host_contains = |s| host_os.as_ref().map(|h| h.contains(s)).unwrap_or(false);
let arch = if host_contains("linux") {
"linux"
} else if host_contains("macos") {
"darwin"
} else if host_contains("windows") {
"windows"
} else if cfg!(target_os = "linux") {
"linux"
} else if cfg!(target_os = "macos") {
"darwin"
} else if cfg!(target_os = "windows") {
"windows"
} else {
return match host_os {
Some(host_os) => Err(AndroidError::UnsupportedHost(host_os)),
_ => Err(AndroidError::UnsupportedTarget),
}?;
};
let mut toolchain_dir = self
.ndk_path
.join("toolchains")
.join("llvm")
.join("prebuilt")
.join(format!("{}-x86_64", arch));
if !toolchain_dir.exists() {
toolchain_dir.set_file_name(arch);
}
if !toolchain_dir.exists() {
return Err(Error::PathNotFound(toolchain_dir));
}
Ok(toolchain_dir)
}
pub fn clang(&self, target: AndroidTarget, platform: u32) -> Result<(PathBuf, PathBuf)> {
#[cfg(target_os = "windows")]
let ext = ".cmd";
#[cfg(not(target_os = "windows"))]
let ext = "";
let bin_name = format!("{}{}-clang", target.ndk_llvm_triple(), platform);
let bin_path = self.toolchain_dir()?.join("bin");
let clang = bin_path.join(format!("{}{}", &bin_name, ext));
if !clang.exists() {
return Err(Error::PathNotFound(clang));
}
let clang_pp = bin_path.join(format!("{}++{}", &bin_name, ext));
if !clang_pp.exists() {
return Err(Error::PathNotFound(clang_pp));
}
Ok((clang, clang_pp))
}
pub fn toolchain_bin(&self, bin: &str, build_target: AndroidTarget) -> Result<PathBuf> {
#[cfg(target_os = "windows")]
let ext = ".exe";
#[cfg(not(target_os = "windows"))]
let ext = "";
let bin = self.toolchain_dir()?.join("bin").join(format!(
"{}-{}{}",
build_target.ndk_triple(),
bin,
ext
));
if !bin.exists() {
return Err(Error::PathNotFound(bin));
}
Ok(bin)
}
pub fn readelf(&self, build_target: AndroidTarget) -> Result<Command> {
let readelf_path = self.toolchain_bin("readelf", build_target)?;
Ok(Command::new(readelf_path))
}
pub fn sysroot_lib_dir(&self, build_target: AndroidTarget) -> Result<PathBuf> {
let sysroot_lib_dir = self
.toolchain_dir()?
.join("sysroot")
.join("usr")
.join("lib")
.join(build_target.ndk_triple());
if !sysroot_lib_dir.exists() {
return Err(Error::PathNotFound(sysroot_lib_dir));
}
Ok(sysroot_lib_dir)
}
pub fn sysroot_platform_lib_dir(
&self,
build_target: AndroidTarget,
min_sdk_version: u32,
) -> Result<PathBuf> {
let sysroot_lib_dir = self.sysroot_lib_dir(build_target)?;
let mut tmp_platform = min_sdk_version;
while tmp_platform > 1 {
let path = sysroot_lib_dir.join(tmp_platform.to_string());
if path.exists() {
return Ok(path);
}
tmp_platform += 1;
}
let mut tmp_platform = min_sdk_version;
while tmp_platform < 100 {
let path = sysroot_lib_dir.join(tmp_platform.to_string());
if path.exists() {
return Ok(path);
}
tmp_platform += 1;
}
Err(AndroidError::PlatformNotFound(min_sdk_version).into())
}
}