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@@ -0,0 +1,607 @@
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package main
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"sort"
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"strings"
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)
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// llamacpp.go — gestion du backend llama.cpp (clone, build, mise à jour).
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//
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// `jean llamacpp install` installe un build neuf, détecte automatiquement
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// l'accélérateur (CUDA / ROCm / Metal / CPU) et la
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// compute capability du GPU, puis pointe BIN dessus.
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// `jean llamacpp update` met à jour le dépôt existant (git pull) et recompile
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// avec la bonne config, sans intervention.
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// `jean llamacpp status` montre le commit courant, le backend détecté et le
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// retard éventuel sur origin.
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const llamacppRepoURL = "https://github.com/ggml-org/llama.cpp.git"
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// buildPlan capture les flags CMake adaptés à la machine courante.
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type buildPlan struct {
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backend string // "cuda" | "hip" | "metal" | "vulkan" | "cpu"
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cudaArch string // ex. "120" ou "86;89" (vide => détection native par CMake)
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cudaCXX string // chemin de nvcc quand backend == cuda
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flags []string // flags -D… passés à `cmake -B build`
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jobs int // parallélisme du build
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}
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func cmdLlamacpp(args []string) error {
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sub := ""
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if len(args) > 0 {
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sub = args[0]
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args = args[1:]
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}
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switch sub {
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case "install":
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return llamacppInstall(args)
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case "update", "upgrade":
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return llamacppUpdate(args)
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case "status", "info", "":
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return llamacppStatus(args)
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default:
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return fmt.Errorf("sous-commande inconnue: %s (install | update | status)", sub)
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}
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}
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// ---------------------------------------------------------------------------
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// Localisation du dépôt
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// ---------------------------------------------------------------------------
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// llamacppRepoDir resolves the llama.cpp checkout: derived from config BIN when
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// possible (so `update` targets whatever build the service actually runs),
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// otherwise the default under $JEAN_HOME/backends/llama.cpp.
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func llamacppRepoDir() string {
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if bin := ReadConfig()["BIN"]; bin != "" {
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if real, err := filepath.EvalSymlinks(bin); err == nil {
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bin = real
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}
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if root := findRepoRoot(bin); root != "" {
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return root
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}
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}
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return defaultRepoDir()
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}
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func defaultRepoDir() string {
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return filepath.Join(JeanHome(), "backends", "llama.cpp")
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}
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// findRepoRoot walks up from a binary path (…/build/bin/llama-server) looking
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// for the llama.cpp source root (a dir holding .git or CMakeLists.txt).
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func findRepoRoot(binPath string) string {
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d := filepath.Dir(binPath)
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for i := 0; i < 6; i++ {
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if isDir(filepath.Join(d, ".git")) || isFile(filepath.Join(d, "CMakeLists.txt")) {
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return d
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}
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parent := filepath.Dir(d)
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if parent == d {
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break
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}
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d = parent
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}
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return ""
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}
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// ---------------------------------------------------------------------------
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// install
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// ---------------------------------------------------------------------------
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func llamacppInstall(args []string) error {
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repo := defaultRepoDir()
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ref := ""
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force := false
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noSwitch := false
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for _, a := range args {
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switch {
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case strings.HasPrefix(a, "--dir="):
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repo = strings.TrimPrefix(a, "--dir=")
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case strings.HasPrefix(a, "--ref="):
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ref = strings.TrimPrefix(a, "--ref=")
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case a == "--force":
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force = true
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case a == "--no-switch":
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noSwitch = true
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default:
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return fmt.Errorf("option inconnue: %s", a)
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}
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}
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if err := requireTools("git", "cmake"); err != nil {
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return err
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}
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// Dépôt déjà présent ? On bascule sur update plutôt que de re-cloner.
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if isDir(filepath.Join(repo, ".git")) {
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if !force {
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fmt.Printf("%s dépôt déjà présent dans %s\n", yellow("[info]"), repo)
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fmt.Printf(" → %s pour le mettre à jour, ou --force pour repartir de zéro\n", bold("jean llamacpp update"))
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return nil
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}
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fmt.Printf("%s --force : suppression de %s\n", yellow("[info]"), repo)
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if err := os.RemoveAll(repo); err != nil {
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return err
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}
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}
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if err := os.MkdirAll(filepath.Dir(repo), 0o755); err != nil {
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return err
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}
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fmt.Printf("%s clone de llama.cpp dans %s\n", cyan("▶"), repo)
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if err := runStep("git clone", "", "git", "clone", "--depth=1", llamacppRepoURL, repo); err != nil {
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return err
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}
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if ref != "" {
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// --depth=1 ne récupère que HEAD ; on approfondit pour atteindre le ref.
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_ = runStep("git fetch", repo, "git", "fetch", "--unshallow", "origin")
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if err := runStep("git checkout", repo, "git", "checkout", ref); err != nil {
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return err
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}
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}
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plan := detectBuildPlan()
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printPlan(plan, repo)
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if err := buildLlamacpp(repo, plan, true); err != nil {
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return err
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}
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bin := filepath.Join(repo, "build", "bin", "llama-server")
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if !isFile(bin) {
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return fmt.Errorf("build terminé mais binaire introuvable: %s", bin)
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}
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fmt.Printf("\n%s binaire compilé : %s\n", green("✓"), bin)
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if noSwitch {
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fmt.Printf("%s --no-switch : config.env inchangée (BIN à régler manuellement)\n", dim("[info]"))
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return nil
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}
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if err := SetConfigKey("BIN", bin); err != nil {
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return fmt.Errorf("build ok mais échec écriture BIN dans config.env: %w", err)
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}
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fmt.Printf("%s BIN mis à jour dans %s\n", green("✓"), confPath())
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fmt.Printf("\nProchaines étapes :\n 1. renseigne MODEL : %s\n 2. démarre : %s\n",
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bold("jean edit"), bold("jean restart"))
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return nil
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}
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// ---------------------------------------------------------------------------
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// update
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// ---------------------------------------------------------------------------
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func llamacppUpdate(args []string) error {
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ref := ""
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clean := false
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noRestart := false
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force := false
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for _, a := range args {
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switch {
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case strings.HasPrefix(a, "--ref="):
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ref = strings.TrimPrefix(a, "--ref=")
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case a == "--clean":
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clean = true
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case a == "--no-restart":
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noRestart = true
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case a == "--force":
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force = true
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default:
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return fmt.Errorf("option inconnue: %s", a)
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}
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}
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if err := requireTools("git", "cmake"); err != nil {
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return err
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}
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repo := llamacppRepoDir()
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if !isDir(filepath.Join(repo, ".git")) {
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return fmt.Errorf("aucun dépôt llama.cpp trouvé (%s).\n → lance d'abord %s", repo, bold("jean llamacpp install"))
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}
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fmt.Printf("%s dépôt : %s\n", cyan("▶"), repo)
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oldCommit := gitOutput(repo, "rev-parse", "--short", "HEAD")
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// Détermine la branche à suivre (master par défaut si HEAD détaché).
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branch := ref
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if branch == "" {
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branch = gitOutput(repo, "rev-parse", "--abbrev-ref", "HEAD")
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if branch == "" || branch == "HEAD" {
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branch = "master"
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}
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}
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if err := runStep("git fetch", repo, "git", "fetch", "origin", "--quiet"); err != nil {
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return err
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}
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// Déjà à jour ? On s'arrête (sauf --clean / --force qui forcent un rebuild).
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localRev := gitOutput(repo, "rev-parse", "HEAD")
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remoteRev := gitOutput(repo, "rev-parse", "origin/"+branch)
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bin := filepath.Join(repo, "build", "bin", "llama-server")
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if localRev != "" && localRev == remoteRev && !clean && !force && isFile(bin) {
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fmt.Printf("%s déjà à jour (%s) — rien à faire\n", green("[ok]"), oldCommit)
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fmt.Printf(" (utilise %s pour forcer une recompilation)\n", dim("--force"))
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return nil
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}
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// Met à jour la source.
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if ref != "" {
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||||
if err := runStep("git checkout", repo, "git", "checkout", ref); err != nil {
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return err
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}
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} else {
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if err := runStep("git pull --ff-only", repo, "git", "pull", "--ff-only", "origin", branch); err != nil {
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return fmt.Errorf("git pull a échoué (modifs locales ? essaie de résoudre à la main): %w", err)
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}
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}
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newCommit := gitOutput(repo, "rev-parse", "--short", "HEAD")
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||||
// On stoppe le service : le binaire en cours d'exécution ne peut pas être
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// réécrit par l'étape de link (« Text file busy »).
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||||
svcWasUp := serviceIsActive()
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||||
if svcWasUp {
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fmt.Printf("%s arrêt du service %s le temps du build…\n", yellow("[info]"), serviceName())
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if err := serviceAction("stop"); err != nil {
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fmt.Printf("%s impossible d'arrêter le service (%v) — le build peut échouer si le binaire est verrouillé\n", yellow("[warn]"), err)
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}
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}
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plan := detectBuildPlan()
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printPlan(plan, repo)
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if err := buildLlamacpp(repo, plan, clean); err != nil {
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||||
// On tente de remettre le service debout même en cas d'échec.
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||||
if svcWasUp && !noRestart {
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_ = serviceAction("start")
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}
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return err
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||||
}
|
||||
if !isFile(bin) {
|
||||
return fmt.Errorf("build terminé mais binaire introuvable: %s", bin)
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}
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fmt.Printf("\n%s mis à jour : %s → %s\n", green("✓"), oldCommit, newCommit)
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|
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if noRestart {
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||||
fmt.Printf("%s --no-restart : pense à lancer %s\n", dim("[info]"), bold("jean restart"))
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||||
return nil
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||||
}
|
||||
if svcWasUp {
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||||
fmt.Printf("%s redémarrage du service…\n", cyan("▶"))
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return serviceAction("start")
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}
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||||
fmt.Printf("%s service non démarré auparavant — lance %s quand tu veux\n", dim("[info]"), bold("jean start"))
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||||
return nil
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||||
}
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||||
// ---------------------------------------------------------------------------
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||||
// status
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||||
// ---------------------------------------------------------------------------
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||||
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||||
func llamacppStatus(args []string) error {
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repo := llamacppRepoDir()
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fmt.Printf("%s\n", bold("llama.cpp"))
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||||
fmt.Printf(" dépôt : %s\n", repo)
|
||||
if !isDir(filepath.Join(repo, ".git")) {
|
||||
fmt.Printf(" %s pas encore installé — %s\n", yellow("état"), bold("jean llamacpp install"))
|
||||
return nil
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||||
}
|
||||
commit := gitOutput(repo, "log", "-1", "--format=%h %ci %s")
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||||
branch := gitOutput(repo, "rev-parse", "--abbrev-ref", "HEAD")
|
||||
fmt.Printf(" branche : %s\n", branch)
|
||||
fmt.Printf(" commit : %s\n", commit)
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||||
|
||||
bin := filepath.Join(repo, "build", "bin", "llama-server")
|
||||
if isFile(bin) {
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||||
fmt.Printf(" binaire : %s\n", green(bin))
|
||||
} else {
|
||||
fmt.Printf(" binaire : %s (pas encore compilé)\n", yellow("absent"))
|
||||
}
|
||||
|
||||
// Retard sur origin (best-effort, sans fetch réseau).
|
||||
if branch != "" && branch != "HEAD" {
|
||||
if behind := gitOutput(repo, "rev-list", "--count", "HEAD..origin/"+branch); behind != "" && behind != "0" {
|
||||
fmt.Printf(" maj : %s commit(s) de retard sur origin/%s — %s\n", yellow(behind), branch, bold("jean llamacpp update"))
|
||||
}
|
||||
}
|
||||
|
||||
plan := detectBuildPlan()
|
||||
fmt.Printf(" backend : %s\n", planLabel(plan))
|
||||
return nil
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Détection matérielle & build
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
// detectBuildPlan probes the machine and returns the CMake flags for the best
|
||||
// available accelerator. Order of preference: CUDA → ROCm/HIP → Metal (macOS)
|
||||
// → Vulkan → CPU.
|
||||
func detectBuildPlan() buildPlan {
|
||||
p := buildPlan{backend: "cpu", jobs: numJobs()}
|
||||
// Flags communs : Release + tuning natif pour la machine de build.
|
||||
// (libcurl est activé d'office par llama.cpp ; LLAMA_CURL est déprécié.)
|
||||
p.flags = []string{
|
||||
"-DCMAKE_BUILD_TYPE=Release",
|
||||
"-DGGML_NATIVE=ON",
|
||||
}
|
||||
|
||||
if runtime.GOOS == "darwin" {
|
||||
// Metal est activé par défaut sur Apple Silicon ; on l'explicite.
|
||||
p.backend = "metal"
|
||||
p.flags = append(p.flags, "-DGGML_METAL=ON")
|
||||
return p
|
||||
}
|
||||
|
||||
// CUDA : nvcc présent ET un GPU NVIDIA visible.
|
||||
if nvcc := findNvcc(); nvcc != "" && hasNvidiaGPU() {
|
||||
p.backend = "cuda"
|
||||
p.cudaCXX = nvcc
|
||||
p.flags = append(p.flags, "-DGGML_CUDA=ON", "-DGGML_CUDA_F16=ON", "-DGGML_CUDA_FA_ALL_QUANTS=ON")
|
||||
if arch := detectCudaArch(); arch != "" {
|
||||
p.cudaArch = arch
|
||||
p.flags = append(p.flags, "-DCMAKE_CUDA_ARCHITECTURES="+arch)
|
||||
}
|
||||
return p
|
||||
}
|
||||
|
||||
// AMD ROCm / HIP.
|
||||
if hasTool("hipcc") || isDir("/opt/rocm") {
|
||||
p.backend = "hip"
|
||||
p.flags = append(p.flags, "-DGGML_HIP=ON")
|
||||
return p
|
||||
}
|
||||
|
||||
// Vulkan (GPU générique) — utile sur Intel/AMD sans ROCm.
|
||||
if hasTool("glslc") && (isFile("/usr/lib/x86_64-linux-gnu/libvulkan.so.1") || hasTool("vulkaninfo")) {
|
||||
p.backend = "vulkan"
|
||||
p.flags = append(p.flags, "-DGGML_VULKAN=ON")
|
||||
return p
|
||||
}
|
||||
|
||||
return p // CPU
|
||||
}
|
||||
|
||||
// buildLlamacpp configures and builds the llama-server target. It handles the
|
||||
// "relocated checkout" gotcha: a build/ whose CMake cache was generated under a
|
||||
// different source path can't reconfigure in place, so we wipe it. `clean`
|
||||
// forces a from-scratch build regardless.
|
||||
func buildLlamacpp(repo string, p buildPlan, clean bool) error {
|
||||
build := filepath.Join(repo, "build")
|
||||
|
||||
if clean || cacheStale(build, repo) {
|
||||
if isDir(build) {
|
||||
fmt.Printf("%s reconfiguration propre (suppression de build/)\n", dim("[info]"))
|
||||
old := build + ".old"
|
||||
_ = os.RemoveAll(old)
|
||||
if err := os.Rename(build, old); err != nil {
|
||||
_ = os.RemoveAll(build) // dernier recours
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// nvcc doit être dans le PATH et exposé via CUDACXX pour la config CMake.
|
||||
env := ""
|
||||
if p.backend == "cuda" && p.cudaCXX != "" {
|
||||
cudaBin := filepath.Dir(p.cudaCXX)
|
||||
env = "CUDACXX=" + p.cudaCXX + "\x00PATH=" + cudaBin + string(os.PathListSeparator) + os.Getenv("PATH")
|
||||
}
|
||||
|
||||
cfgArgs := append([]string{"-B", "build", "-S", "."}, p.flags...)
|
||||
if err := runStepEnv("cmake configure", repo, env, "cmake", cfgArgs...); err != nil {
|
||||
return fmt.Errorf("configuration CMake échouée: %w", err)
|
||||
}
|
||||
|
||||
buildArgs := []string{"--build", "build", "--config", "Release",
|
||||
"-j", fmt.Sprintf("%d", p.jobs), "--target", "llama-server"}
|
||||
if err := runStepEnv("cmake build", repo, env, "cmake", buildArgs...); err != nil {
|
||||
return fmt.Errorf("compilation échouée: %w", err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// cacheStale reports whether build/CMakeCache.txt was generated for a different
|
||||
// source directory than `repo` (the relocated-checkout case).
|
||||
func cacheStale(build, repo string) bool {
|
||||
cache := filepath.Join(build, "CMakeCache.txt")
|
||||
b, err := os.ReadFile(cache)
|
||||
if err != nil {
|
||||
return false // pas de cache => configure neuf, rien à nettoyer
|
||||
}
|
||||
absRepo, _ := filepath.Abs(repo)
|
||||
for _, line := range strings.Split(string(b), "\n") {
|
||||
// CMAKE_HOME_DIRECTORY pointe vers le source dir d'origine.
|
||||
if strings.HasPrefix(line, "CMAKE_HOME_DIRECTORY:") {
|
||||
if i := strings.IndexByte(line, '='); i >= 0 {
|
||||
home := strings.TrimSpace(line[i+1:])
|
||||
return home != "" && home != absRepo
|
||||
}
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Sondes matérielles
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
// findNvcc returns the path to nvcc from PATH or a /usr/local/cuda* install,
|
||||
// preferring the highest version.
|
||||
func findNvcc() string {
|
||||
if p, err := exec.LookPath("nvcc"); err == nil {
|
||||
return p
|
||||
}
|
||||
if p := "/usr/local/cuda/bin/nvcc"; isFile(p) {
|
||||
return p
|
||||
}
|
||||
matches, _ := filepath.Glob("/usr/local/cuda-*/bin/nvcc")
|
||||
if len(matches) > 0 {
|
||||
sort.Strings(matches) // cuda-12.2 < cuda-12.8 lexicographiquement → on prend le dernier
|
||||
return matches[len(matches)-1]
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func hasNvidiaGPU() bool {
|
||||
if !hasTool("nvidia-smi") {
|
||||
return false
|
||||
}
|
||||
out, err := exec.Command("nvidia-smi", "-L").Output()
|
||||
return err == nil && strings.Contains(string(out), "GPU")
|
||||
}
|
||||
|
||||
// detectCudaArch queries every GPU's compute capability via nvidia-smi and
|
||||
// returns them as CMake-style arch codes (e.g. "8.6" → "86"), deduped and
|
||||
// joined with ';'. Empty when the driver is too old to report it (CMake then
|
||||
// falls back to native detection).
|
||||
func detectCudaArch() string {
|
||||
out, err := exec.Command("nvidia-smi", "--query-gpu=compute_cap", "--format=csv,noheader").Output()
|
||||
if err != nil {
|
||||
return ""
|
||||
}
|
||||
seen := map[string]bool{}
|
||||
var archs []string
|
||||
for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
|
||||
cap := strings.TrimSpace(line)
|
||||
if cap == "" || strings.Contains(strings.ToLower(cap), "not supported") {
|
||||
continue
|
||||
}
|
||||
code := strings.ReplaceAll(cap, ".", "") // "12.0" → "120"
|
||||
if code != "" && !seen[code] {
|
||||
seen[code] = true
|
||||
archs = append(archs, code)
|
||||
}
|
||||
}
|
||||
return strings.Join(archs, ";")
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Helpers
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
func numJobs() int {
|
||||
n := runtime.NumCPU()
|
||||
if n < 1 {
|
||||
return 1
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
func isFile(p string) bool {
|
||||
fi, err := os.Stat(p)
|
||||
return err == nil && !fi.IsDir()
|
||||
}
|
||||
|
||||
func isDir(p string) bool {
|
||||
fi, err := os.Stat(p)
|
||||
return err == nil && fi.IsDir()
|
||||
}
|
||||
|
||||
func hasTool(name string) bool {
|
||||
_, err := exec.LookPath(name)
|
||||
return err == nil
|
||||
}
|
||||
|
||||
func requireTools(tools ...string) error {
|
||||
var missing []string
|
||||
for _, t := range tools {
|
||||
if !hasTool(t) {
|
||||
missing = append(missing, t)
|
||||
}
|
||||
}
|
||||
if len(missing) > 0 {
|
||||
return fmt.Errorf("outils manquants: %s — installe-les puis réessaie", strings.Join(missing, ", "))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func serviceIsActive() bool {
|
||||
out, _ := exec.Command("systemctl", "is-active", serviceName()).Output()
|
||||
return strings.TrimSpace(string(out)) == "active"
|
||||
}
|
||||
|
||||
// gitOutput runs a git command in `dir` and returns trimmed stdout (or "").
|
||||
func gitOutput(dir string, args ...string) string {
|
||||
cmd := exec.Command("git", args...)
|
||||
cmd.Dir = dir
|
||||
out, err := cmd.Output()
|
||||
if err != nil {
|
||||
return ""
|
||||
}
|
||||
return strings.TrimSpace(string(out))
|
||||
}
|
||||
|
||||
// runStep runs a command in `dir` streaming output live to the terminal.
|
||||
func runStep(name, dir, bin string, args ...string) error {
|
||||
return runStepEnv(name, dir, "", bin, args...)
|
||||
}
|
||||
|
||||
// runStepEnv is runStep with optional extra env vars (NUL-separated KEY=VAL
|
||||
// pairs in `extraEnv`, which override existing ones).
|
||||
func runStepEnv(name, dir, extraEnv, bin string, args ...string) error {
|
||||
fmt.Printf("\n%s %s %s\n", cyan("▶"), name, dim(strings.Join(args, " ")))
|
||||
cmd := exec.Command(bin, args...)
|
||||
cmd.Dir = dir
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
cmd.Stdin = os.Stdin
|
||||
if extraEnv != "" {
|
||||
env := os.Environ()
|
||||
for _, kv := range strings.Split(extraEnv, "\x00") {
|
||||
if kv == "" {
|
||||
continue
|
||||
}
|
||||
env = upsertEnv(env, kv)
|
||||
}
|
||||
cmd.Env = env
|
||||
}
|
||||
return cmd.Run()
|
||||
}
|
||||
|
||||
// upsertEnv replaces KEY=… in env if present, else appends kv (kv is "KEY=VAL").
|
||||
func upsertEnv(env []string, kv string) []string {
|
||||
key := kv
|
||||
if i := strings.IndexByte(kv, '='); i >= 0 {
|
||||
key = kv[:i]
|
||||
}
|
||||
for i, e := range env {
|
||||
if strings.HasPrefix(e, key+"=") {
|
||||
env[i] = kv
|
||||
return env
|
||||
}
|
||||
}
|
||||
return append(env, kv)
|
||||
}
|
||||
|
||||
func planLabel(p buildPlan) string {
|
||||
switch p.backend {
|
||||
case "cuda":
|
||||
arch := p.cudaArch
|
||||
if arch == "" {
|
||||
arch = "native"
|
||||
}
|
||||
return green("CUDA") + dim(" (arch="+arch+", nvcc="+p.cudaCXX+")")
|
||||
case "hip":
|
||||
return green("ROCm/HIP")
|
||||
case "metal":
|
||||
return green("Metal")
|
||||
case "vulkan":
|
||||
return green("Vulkan")
|
||||
default:
|
||||
return yellow("CPU") + dim(" (aucun accélérateur détecté)")
|
||||
}
|
||||
}
|
||||
|
||||
func printPlan(p buildPlan, repo string) {
|
||||
fmt.Printf("\n%s configuration du build\n", bold("•"))
|
||||
fmt.Printf(" backend : %s\n", planLabel(p))
|
||||
fmt.Printf(" jobs : %d\n", p.jobs)
|
||||
fmt.Printf(" flags : %s\n", dim(strings.Join(p.flags, " ")))
|
||||
}
|
||||
Reference in new issue
Block a user