fix(single-binary): bundle ld.so (#2602)

* debug

* fix copy command/silly muscle memory

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* remove tmate

* Debugging

* Start binary with ld.so if present in libdir

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* small refactor

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

---------

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

.github/workflows/release.yaml

@@ -102,8 +102,9 @@ jobs:
           export PATH=/usr/local/cuda/bin:$PATH
           sudo rm -rf /usr/aarch64-linux-gnu/lib/libstdc++.so.6
           sudo cp -rf /usr/aarch64-linux-gnu/lib/libstdc++.so* /usr/aarch64-linux-gnu/lib/libstdc++.so.6
+          sudo cp /usr/aarch64-linux-gnu/lib/ld-linux-aarch64.so.1 ld.so
           GO_TAGS=p2p \
-          BACKEND_LIBS="./grpc/cmake/cross_build/third_party/re2/libre2.a ./grpc/cmake/cross_build/libgrpc.a ./grpc/cmake/cross_build/libgrpc++.a ./grpc/cmake/cross_build/third_party/protobuf/libprotobuf.a /usr/aarch64-linux-gnu/lib/libc.so.6 /usr/aarch64-linux-gnu/lib/libstdc++.so.6 /usr/aarch64-linux-gnu/lib/libgomp.so.1 /usr/aarch64-linux-gnu/lib/libm.so.6 /usr/aarch64-linux-gnu/lib/libgcc_s.so.1 /usr/aarch64-linux-gnu/lib/libdl.so.2 /usr/aarch64-linux-gnu/lib/libpthread.so.0" \
+          BACKEND_LIBS="./grpc/cmake/cross_build/third_party/re2/libre2.a ./grpc/cmake/cross_build/libgrpc.a ./grpc/cmake/cross_build/libgrpc++.a ./grpc/cmake/cross_build/third_party/protobuf/libprotobuf.a /usr/aarch64-linux-gnu/lib/libc.so.6 /usr/aarch64-linux-gnu/lib/libstdc++.so.6 /usr/aarch64-linux-gnu/lib/libgomp.so.1 /usr/aarch64-linux-gnu/lib/libm.so.6 /usr/aarch64-linux-gnu/lib/libgcc_s.so.1 /usr/aarch64-linux-gnu/lib/libdl.so.2 /usr/aarch64-linux-gnu/lib/libpthread.so.0 ./ld.so" \
           GOOS=linux \
           GOARCH=arm64 \
           CMAKE_ARGS="-DProtobuf_INCLUDE_DIRS=$CROSS_STAGING_PREFIX/include -DProtobuf_DIR=$CROSS_STAGING_PREFIX/lib/cmake/protobuf -DgRPC_DIR=$CROSS_STAGING_PREFIX/lib/cmake/grpc -DCMAKE_TOOLCHAIN_FILE=$CMAKE_CROSS_TOOLCHAIN -DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++" make dist-cross-linux-arm64
@@ -212,8 +213,9 @@ jobs:
           export PATH=/usr/local/cuda/bin:$PATH
           export PATH=/opt/rocm/bin:$PATH
           source /opt/intel/oneapi/setvars.sh
+          sudo cp /lib64/ld-linux-x86-64.so.2 ld.so
           GO_TAGS=p2p \
-          BACKEND_LIBS="/usr/lib/x86_64-linux-gnu/libstdc++.so.6 /usr/lib/x86_64-linux-gnu/libm.so.6 /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 /usr/lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libgomp.so.1" \
+          BACKEND_LIBS="./ld.so /usr/lib/x86_64-linux-gnu/libstdc++.so.6 /usr/lib/x86_64-linux-gnu/libm.so.6 /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 /usr/lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libgomp.so.1" \
           make -j4 dist
       - uses: actions/upload-artifact@v4
         with:

Makefile

@@ -315,7 +315,7 @@ build: prepare backend-assets grpcs ## Build the project
 	$(info ${GREEN}I LD_FLAGS: ${YELLOW}$(LD_FLAGS)${RESET})
 ifneq ($(BACKEND_LIBS),)
 	$(MAKE) backend-assets/lib
-	cp -r $(BACKEND_LIBS) backend-assets/lib/
+	cp $(BACKEND_LIBS) backend-assets/lib/
 endif
 	CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GOCMD) build -ldflags "$(LD_FLAGS)" -tags "$(GO_TAGS)" -o $(BINARY_NAME) ./
 

core/cli/models.go

@@ -57,6 +57,7 @@ func (mi *ModelsInstall) Run(ctx *cliContext.Context) error {
 	if err := json.Unmarshal([]byte(mi.Galleries), &galleries); err != nil {
 		log.Error().Err(err).Msg("unable to load galleries")
 	}
+
 	for _, modelName := range mi.ModelArgs {
 
 		progressBar := progressbar.NewOptions(

pkg/library/dynaload.go

@@ -5,11 +5,20 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+
+	"github.com/rs/zerolog/log"
 )
 
+/*
+	This file contains functions to load libraries from the asset directory to keep the business logic clean.
+*/
+
+// skipLibraryPath checks if LOCALAI_SKIP_LIBRARY_PATH is set
+var skipLibraryPath = os.Getenv("LOCALAI_SKIP_LIBRARY_PATH") != ""
+
+// LoadExtractedLibs loads the extracted libraries from the asset dir
 func LoadExtractedLibs(dir string) {
-	// Skip this if LOCALAI_SKIP_LIBRARY_PATH is set
-	if os.Getenv("LOCALAI_SKIP_LIBRARY_PATH") != "" {
+	if skipLibraryPath {
 		return
 	}
 
@@ -18,9 +27,38 @@ func LoadExtractedLibs(dir string) {
 	}
 }
 
+// LoadLDSO checks if there is a ld.so in the asset dir and if so, prefixes the grpc process with it.
+// In linux, if we find a ld.so in the asset dir we prefix it to run with the libs exposed in
+// LD_LIBRARY_PATH for more compatibility
+// If we don't do this, we might run into stack smash
+// See also: https://stackoverflow.com/questions/847179/multiple-glibc-libraries-on-a-single-host/851229#851229
+// In this case, we expect a ld.so in the lib asset dir.
+// If that's present, we use it to run the grpc backends as supposedly built against
+// that specific version of ld.so
+func LoadLDSO(assetDir string, args []string, grpcProcess string) ([]string, string) {
+	if skipLibraryPath {
+		return args, grpcProcess
+	}
+
+	if runtime.GOOS != "linux" {
+		return args, grpcProcess
+	}
+
+	// Check if there is a ld.so file in the assetDir, if it does, we need to run the grpc process with it
+	ldPath := filepath.Join(assetDir, "backend-assets", "lib", "ld.so")
+	if _, err := os.Stat(ldPath); err == nil {
+		log.Debug().Msgf("ld.so found")
+		// We need to run the grpc process with the ld.so
+		args = append(args, grpcProcess)
+		grpcProcess = ldPath
+	}
+
+	return args, grpcProcess
+}
+
+// LoadExternal sets the LD_LIBRARY_PATH to include the given directory
 func LoadExternal(dir string) {
-	// Skip this if LOCALAI_SKIP_LIBRARY_PATH is set
-	if os.Getenv("LOCALAI_SKIP_LIBRARY_PATH") != "" {
+	if skipLibraryPath {
 		return
 	}
 

pkg/model/initializers.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	grpc "github.com/go-skynet/LocalAI/pkg/grpc"
+	"github.com/go-skynet/LocalAI/pkg/library"
 	"github.com/go-skynet/LocalAI/pkg/xsysinfo"
 	"github.com/klauspost/cpuid/v2"
 	"github.com/phayes/freeport"
@@ -326,8 +327,13 @@ func (ml *ModelLoader) grpcModel(backend string, o *Options) func(string, string
 				return "", fmt.Errorf("failed allocating free ports: %s", err.Error())
 			}
 
-			// Make sure the process is executable
-			if err := ml.startProcess(grpcProcess, o.model, serverAddress); err != nil {
+			args := []string{}
+
+			// Load the ld.so if it exists
+			args, grpcProcess = library.LoadLDSO(o.assetDir, args, grpcProcess)
+
+			// Make sure the process is executable in any circumstance
+			if err := ml.startProcess(grpcProcess, o.model, serverAddress, args...); err != nil {
 				return "", err
 			}
 

pkg/model/process.go

@@ -69,7 +69,7 @@ func (ml *ModelLoader) GetGRPCPID(id string) (int, error) {
 	return strconv.Atoi(p.PID)
 }
 
-func (ml *ModelLoader) startProcess(grpcProcess, id string, serverAddress string) error {
+func (ml *ModelLoader) startProcess(grpcProcess, id string, serverAddress string, args ...string) error {
 	// Make sure the process is executable
 	if err := os.Chmod(grpcProcess, 0700); err != nil {
 		return err
@@ -82,7 +82,7 @@ func (ml *ModelLoader) startProcess(grpcProcess, id string, serverAddress string
 	grpcControlProcess := process.New(
 		process.WithTemporaryStateDir(),
 		process.WithName(grpcProcess),
-		process.WithArgs("--addr", serverAddress),
+		process.WithArgs(append(args, []string{"--addr", serverAddress}...)...),
 		process.WithEnvironment(os.Environ()...),
 	)