显式库路径配置优先于系统默认搜索

README.md

@@ -104,4 +104,8 @@ The `/pkg` directory contains the Go files converted by c-for-go and the manuall
 
 - `/opt/mxdriver/lib/libmxsml.so`
 - `/opt/maca/lib/libmxsml.so`
-- `/opt/mxn100/lib/libmxsml.so`
+- `/opt/mxn100/lib/libmxsml.so`
+
+For custom container layouts, you can also point the loader to a specific file
+or directory with `MXSML_LIBRARY_PATH`, or provide `MACA_HOME` and let the
+loader resolve `lib/libmxsml.so` underneath it.

gen/License

@@ -1,12 +1,12 @@
-                               LICENSE
-
-Copyright © 2026 MetaX Integrated Circuits (Shanghai) Co., Ltd.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
-1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
-3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
+                               LICENSE
+
+Copyright © 2026 MetaX Integrated Circuits (Shanghai) Co., Ltd.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+

pkg/lib/lib.go

@@ -15,8 +15,6 @@ import (
 // #include <stdlib.h>
 import "C"
 
-const mxsmlLibName = "libmxsml.so"
-
 var g_mxsmlLib = newMxsmlLib()
 
 type library struct {
@@ -45,24 +43,22 @@ func Load() error {
 	libName := C.CString(mxsmlLibName)
 	defer C.free(unsafe.Pointer(libName))
 
-	runtime.LockOSThread()
-	handle := C.dlopen(libName, C.int(g_mxsmlLib.flag))
-	runtime.UnlockOSThread()
+	var handle unsafe.Pointer
+	if !hasExplicitLibraryPathConfig() {
+		runtime.LockOSThread()
+		handle = C.dlopen(libName, C.int(g_mxsmlLib.flag))
+		runtime.UnlockOSThread()
 
-	if handle != nil {
-		g_mxsmlLib.handle = handle
-		g_mxsmlLib.loaded = true
-		return nil
+		if handle != nil {
+			g_mxsmlLib.handle = handle
+			g_mxsmlLib.loaded = true
+			return nil
+		}
 	}
 
 	var installPath string
-	// check lib path
-	libPathList := []string{
-		"/opt/mxdriver/lib/" + mxsmlLibName,
-		"/opt/maca/lib/" + mxsmlLibName,
-		"/opt/mxn100/lib/" + mxsmlLibName,
-	}
-	for _, path := range libPathList {
+	attemptedPaths := candidateLibraryPaths()
+	for _, path := range attemptedPaths {
 		if _, err := os.Stat(path); err == nil {
 			installPath = path
 			break

pkg/lib/lib_test.go

@@ -0,0 +1,75 @@
+package lib
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestCandidateLibraryPathsUsesEnvFile(t *testing.T) {
+	t.Setenv("MXSML_LIBRARY_PATH", "/custom/libmxsml.so")
+	t.Setenv("MACA_HOME", "")
+
+	paths := candidateLibraryPaths()
+	if len(paths) != 1 || paths[0] != "/custom/libmxsml.so" {
+		t.Fatalf("expected env file path first, got %v", paths)
+	}
+}
+
+func TestCandidateLibraryPathsUsesEnvDirectory(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("MXSML_LIBRARY_PATH", dir)
+	t.Setenv("MACA_HOME", "")
+
+	paths := candidateLibraryPaths()
+	want := filepath.Join(dir, mxsmlLibName)
+	if len(paths) != 1 || paths[0] != want {
+		t.Fatalf("expected env directory to resolve to %s, got %v", want, paths)
+	}
+}
+
+func TestCandidateLibraryPathsUsesMacaHome(t *testing.T) {
+	t.Setenv("MXSML_LIBRARY_PATH", "")
+	t.Setenv("MACA_HOME", "/opt/custom-maca")
+
+	paths := candidateLibraryPaths()
+	want := filepath.Join("/opt/custom-maca", "lib", mxsmlLibName)
+	if len(paths) != 1 || paths[0] != want {
+		t.Fatalf("expected only explicit MACA_HOME path %s, got %v", want, paths)
+	}
+}
+
+func TestCandidateLibraryPathsSkipsDuplicates(t *testing.T) {
+	t.Setenv("MXSML_LIBRARY_PATH", filepath.Join("/opt/maca/lib", mxsmlLibName))
+	t.Setenv("MACA_HOME", "/opt/maca")
+
+	paths := candidateLibraryPaths()
+	seen := map[string]struct{}{}
+	for _, path := range paths {
+		if _, ok := seen[path]; ok {
+			t.Fatalf("found duplicate path %s in %v", path, paths)
+		}
+		seen[path] = struct{}{}
+	}
+}
+
+func TestCandidateLibraryPathsHandlesMissingEnvDirAsFile(t *testing.T) {
+	missing := filepath.Join(os.TempDir(), "missing-libmxsml.so")
+	t.Setenv("MXSML_LIBRARY_PATH", missing)
+	t.Setenv("MACA_HOME", "")
+
+	paths := candidateLibraryPaths()
+	if len(paths) == 0 || paths[0] != missing {
+		t.Fatalf("expected missing env path to be preserved, got %v", paths)
+	}
+}
+
+func TestCandidateLibraryPathsFallsBackToDefaultsWithoutExplicitConfig(t *testing.T) {
+	t.Setenv("MXSML_LIBRARY_PATH", "")
+	t.Setenv("MACA_HOME", "")
+
+	paths := candidateLibraryPaths()
+	if len(paths) != 3 {
+		t.Fatalf("expected default paths, got %v", paths)
+	}
+}

pkg/lib/search_paths.go

@@ -0,0 +1,51 @@
+package lib
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const mxsmlLibName = "libmxsml.so"
+
+func hasExplicitLibraryPathConfig() bool {
+	return strings.TrimSpace(os.Getenv("MXSML_LIBRARY_PATH")) != "" ||
+		strings.TrimSpace(os.Getenv("MACA_HOME")) != ""
+}
+
+func candidateLibraryPaths() []string {
+	paths := []string{}
+	appendUnique := func(path string) {
+		if path == "" {
+			return
+		}
+		for _, existing := range paths {
+			if existing == path {
+				return
+			}
+		}
+		paths = append(paths, path)
+	}
+
+	if value := strings.TrimSpace(os.Getenv("MXSML_LIBRARY_PATH")); value != "" {
+		info, err := os.Stat(value)
+		if err == nil && info.IsDir() {
+			appendUnique(filepath.Join(value, mxsmlLibName))
+		} else {
+			appendUnique(value)
+		}
+	}
+
+	if value := strings.TrimSpace(os.Getenv("MACA_HOME")); value != "" {
+		appendUnique(filepath.Join(value, "lib", mxsmlLibName))
+	}
+
+	if hasExplicitLibraryPathConfig() {
+		return paths
+	}
+
+	appendUnique("/opt/mxdriver/lib/" + mxsmlLibName)
+	appendUnique("/opt/maca/lib/" + mxsmlLibName)
+	appendUnique("/opt/mxn100/lib/" + mxsmlLibName)
+	return paths
+}