Crafter.Build/project.cpp

// SPDX-License-Identifier: LGPL-3.0-only
// SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®

import std;
import Crafter.Build;
#include "lint-rules.h"
namespace fs = std::filesystem;
using namespace Crafter;

extern "C" Configuration CrafterBuildProject(std::span<const std::string_view> args) {
    std::vector<std::string> depArgs(args.begin(), args.end());
    Configuration* math = GitProject({
        .source = { "https://forgejo.catcrafts.net/Catcrafts/Crafter.Math.git" },
        .args = depArgs,
    });
    Configuration* asset = GitProject({
        .source = { "https://forgejo.catcrafts.net/Catcrafts/Crafter.Asset.git" },
        .args = depArgs,
    });

    static auto CrafterBuildLib = std::make_unique<Configuration>();
    CrafterBuildLib->path = "./";
    CrafterBuildLib->name = "crafter.build-lib";
    CrafterBuildLib->outputName = "crafter-build";
    ApplyStandardArgs(*CrafterBuildLib, args);
    // Windows builds (native msvc via build.cmd or cross-compiled mingw from
    // Linux) need a DLL + import lib + launcher exe so LoadProject can
    // compile project.cpp against a stable ABI boundary. Linux is monolithic.
    CrafterBuildLib->type = (CrafterBuildLib->target == "x86_64-w64-mingw32" || CrafterBuildLib->target == "x86_64-pc-windows-msvc")
        ? ConfigurationType::LibraryDynamic
        : ConfigurationType::LibraryStatic;

    CrafterBuildLib->dependencies = { math, asset };
    CrafterBuildLib->defines.push_back({"CRAFTER_BUILD_HAS_ASSET", ""});
    // Crafter.Build-Lint includes libclang's clang-c/Index.h. glibc distros
    // keep it in /usr/include; Alpine keeps LLVM under /usr/lib/llvmNN, so ask
    // llvm-config and add the dir when it is not already on the default path
    // (never /usr/include itself: that breaks libc++'s #include_next).
    if (CrafterBuildLib->target.ends_with("-linux-gnu") || CrafterBuildLib->target.ends_with("-linux-musl")) {
        auto llvmInc = RunCommandWithTimeout("llvm-config --includedir 2>/dev/null", std::chrono::seconds(10));
        std::string incDir = llvmInc.output;
        while (!incDir.empty() && (incDir.back() == '\n' || incDir.back() == '\r')) incDir.pop_back();
        if (llvmInc.exitCode == 0 && !incDir.empty() && incDir != "/usr/include") {
            CrafterBuildLib->compileFlags.push_back(std::format("-I{}", incDir));
        }
    }
    {
        std::array<fs::path, 11> interfaces = {
            "interfaces/Crafter.Build",
            "interfaces/Crafter.Build-Shader",
            "interfaces/Crafter.Build-Platform",
            "interfaces/Crafter.Build-Interface",
            "interfaces/Crafter.Build-Implementation",
            "interfaces/Crafter.Build-External",
            "interfaces/Crafter.Build-Clang",
            "interfaces/Crafter.Build-Test",
            "interfaces/Crafter.Build-Lint",
            "interfaces/Crafter.Build-Progress",
            "interfaces/Crafter.Build-Asset",
        };
        std::array<fs::path, 10> implementations = {
            "implementations/Crafter.Build-Shader",
            "implementations/Crafter.Build-Platform",
            "implementations/Crafter.Build-Interface",
            "implementations/Crafter.Build-Implementation",
            "implementations/Crafter.Build-External",
            "implementations/Crafter.Build-Clang",
            "implementations/Crafter.Build-Test",
            "implementations/Crafter.Build-Lint",
            "implementations/Crafter.Build-Progress",
            "implementations/Crafter.Build-Asset",
        };
        CrafterBuildLib->GetInterfacesAndImplementations(interfaces, implementations);
    }
    ExternalDependency& glslang = CrafterBuildLib->externalDependencies.emplace_back();
    glslang.name = "glslang";
    glslang.source.url = "https://github.com/KhronosGroup/glslang.git";
    glslang.source.branch = "main";
    glslang.builder = ExternalBuilder::CMake;
    glslang.options = { "-DENABLE_OPT=OFF" };
    // mingw cross-build: skip the standalone executable. We only consume the
    // libraries, and glslang.exe pulls in libgcc_eh which needs pthread that
    // mingw-w64 doesn't link by default.
    if (CrafterBuildLib->target == "x86_64-w64-mingw32") {
        glslang.options.push_back("-DENABLE_GLSLANG_BINARIES=OFF");
    }
    glslang.includeDirs = { "" };
    glslang.libs = { "SPIRV", "GenericCodeGen", "glslang", "OSDependent", "MachineIndependent", "glslang-default-resource-limits" };

    Configuration cfg;
    cfg.path = "./";
    cfg.name = "crafter.build-exe";
    cfg.outputName = "crafter-build";
    ApplyStandardArgs(cfg, args);
    cfg.type = ConfigurationType::Executable;
    cfg.dependencies = { CrafterBuildLib.get() };
    {
        std::array<fs::path, 0> interfaces = {};
        std::array<fs::path, 1> implementations = { "implementations/main" };
        cfg.GetInterfacesAndImplementations(interfaces, implementations);
    }
    // Linux hosts, glibc or musl (Alpine): -ldl is a libc stub on musl, harmless.
    const bool linuxTarget = cfg.target.ends_with("-linux-gnu") || cfg.target.ends_with("-linux-musl");
    if (linuxTarget) {
        cfg.linkFlags.push_back("-Wl,--export-dynamic");
        cfg.linkFlags.push_back("-ldl");
    }
    if (cfg.target == "x86_64-w64-mingw32" || cfg.target == "x86_64-pc-windows-msvc") {
        // winsock for the -r wasm port probe (bind/WSAStartup).
        CrafterBuildLib->linkFlags.push_back("-lws2_32");
    }

    // Self-tests link the local crafter-build library and exercise it in
    // process. The harness (whichever crafter-build invokes `test`) compiles
    // these against the *installed* share/crafter-build .cppm files, then
    // links each test exe against CrafterBuildLib built from the local
    // sources — so the code under test is whatever's in this checkout.
    // Mirrors how downstream consumers link their own libraries into tests.
    if (linuxTarget) {
        cfg.AddTest("HelloWorld").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("StaticLib").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("ModuleInterface").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("DependencyLink").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("IncrementalInterfaceChange").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("TransitiveInterfaceChange").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("IncrementalHeaderChange").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("CompilerWarning").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("CleanProject").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("ShaderCompile").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("StandardArgs").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("TestRunnerSpec").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("VariantId").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("WasiBrowserRuntime").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("WasmVariants").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("RunSingleTestExit").Dependencies({ CrafterBuildLib.get() });
        // LoadProject dlopens the synthesized project.so, which references
        // Crafter:: symbols (HostTarget, Configuration ctors) that have to be
        // visible from the test exe — same wiring crafter-build itself uses
        // for project.so.
        cfg.AddTest("ConcurrentCacheRace").Dependencies({ CrafterBuildLib.get() })
            .LinkFlag("-Wl,--export-dynamic").LinkFlag("-ldl");
        // Same LoadProject wiring as ConcurrentCacheRace above.
        cfg.AddTest("HostCacheSourceStamp").Dependencies({ CrafterBuildLib.get() })
            .LinkFlag("-Wl,--export-dynamic").LinkFlag("-ldl");
        cfg.AddTest("ConcurrentDependencyReset").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("Lint").Dependencies({ CrafterBuildLib.get() });
        cfg.AddTest("HouseRules").Dependencies({ CrafterBuildLib.get() });
    }

    // Dogfood: this repo's house-style rules (see lint-rules.h). Report
    // rules gate `crafter-build lint`; transform rules also auto-fix under
    // `crafter-build format`.
    ProjectLint::AddProjectLintRules(cfg);

    return cfg;
}