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* Toolchain Detector
* Finds available C/C++ compilers on the system
*/
import { execSync } from "node:child_process";
import { existsSync } from "node:fs";
import { join } from "node:path";
import IToolchain from "./types/IToolchain";
/**
* Detects available C/C++ toolchains
*/
class ToolchainDetector {
/**
* Detect the best available toolchain
* Priority: ARM cross-compiler > clang > gcc
*/
static detect(): IToolchain | null {
// Try ARM cross-compiler first (for embedded)
const arm = this.detectArmToolchain();
if (arm) return arm;
// Try clang
const clang = this.detectClang();
if (clang) return clang;
// Try gcc
const gcc = this.detectGcc();
if (gcc) return gcc;
return null;
}
/**
* Detect all available toolchains
*/
static detectAll(): IToolchain[] {
const toolchains: IToolchain[] = [];
const arm = this.detectArmToolchain();
if (arm) toolchains.push(arm);
const clang = this.detectClang();
if (clang) toolchains.push(clang);
const gcc = this.detectGcc();
if (gcc) toolchains.push(gcc);
return toolchains;
}
/**
* Detect ARM cross-compiler (arm-none-eabi-gcc)
*/
private static detectArmToolchain(): IToolchain | null {
const cc = this.findExecutable("arm-none-eabi-gcc");
if (!cc) return null;
const cxx = this.findExecutable("arm-none-eabi-g++") ?? cc;
const version = this.getVersion(cc);
return {
name: "arm-none-eabi-gcc",
cc,
cxx,
cpp: cc, // Use cc with -E flag
version,
isCrossCompiler: true,
target: "arm-none-eabi",
};
}
/**
* Detect clang
*/
private static detectClang(): IToolchain | null {
const cc = this.findExecutable("clang");
if (!cc) return null;
const cxx = this.findExecutable("clang++") ?? cc;
const version = this.getVersion(cc);
return {
name: "clang",
cc,
cxx,
cpp: cc,
version,
isCrossCompiler: false,
};
}
/**
* Detect GCC
*/
private static detectGcc(): IToolchain | null {
const cc = this.findExecutable("gcc");
if (!cc) return null;
const cxx = this.findExecutable("g++") ?? cc;
const version = this.getVersion(cc);
return {
name: "gcc",
cc,
cxx,
cpp: cc,
version,
isCrossCompiler: false,
};
}
/**
* Find an executable in PATH
*/
private static findExecutable(name: string): string | null {
try {
const result = execSync(`which ${name}`, {
encoding: "utf-8",
stdio: ["pipe", "pipe", "pipe"],
}).trim();
if (result && existsSync(result)) {
return result;
}
} catch {
// Not found
}
return null;
}
/**
* Get compiler version string
*/
private static getVersion(compiler: string): string | undefined {
try {
const result = execSync(`${compiler} --version`, {
encoding: "utf-8",
stdio: ["pipe", "pipe", "pipe"],
});
// Extract first line which usually has version info
const firstLine = result.split("\n")[0];
return firstLine?.trim();
} catch {
return undefined;
}
}
/**
* Get default include paths for a toolchain
*/
static getDefaultIncludePaths(toolchain: IToolchain): string[] {
try {
// Ask the compiler for its default include paths
const result = execSync(`echo | ${toolchain.cc} -E -Wp,-v - 2>&1`, {
encoding: "utf-8",
stdio: ["pipe", "pipe", "pipe"],
});
const paths: string[] = [];
let inIncludeSection = false;
for (const line of result.split("\n")) {
if (line.includes("#include <...> search starts here:")) {
inIncludeSection = true;
continue;
}
if (line.includes("End of search list.")) {
break;
}
if (inIncludeSection && line.trim()) {
paths.push(line.trim());
}
}
return paths;
} catch {
return [];
}
}
/**
* Parse PlatformIO environment for include paths
* Looks for platformio.ini in project root
*/
static getPlatformIOIncludePaths(projectRoot: string): string[] {
const paths: string[] = [];
const pioIniPath = join(projectRoot, "platformio.ini");
if (!existsSync(pioIniPath)) {
return paths;
}
try {
// Use pio to get the include paths
const result = execSync("pio project config --json-output", {
cwd: projectRoot,
encoding: "utf-8",
stdio: ["pipe", "pipe", "pipe"],
});
const config = JSON.parse(result) as Record<
string,
{ build_flags?: string[] }
>;
// Extract include directories from build flags
for (const env of Object.values(config)) {
const buildFlags = env.build_flags ?? [];
for (const flag of buildFlags) {
if (flag.startsWith("-I")) {
paths.push(flag.slice(2));
}
}
}
} catch {
// PlatformIO not available or project not configured
}
return paths;
}
}
export default ToolchainDetector;
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