Files
llgo/chore/_xtool/llcppsymg/dylib/dylib.go
2024-10-21 18:48:56 +08:00

78 lines
2.0 KiB
Go

package dylib
import (
"fmt"
"os"
"path/filepath"
"strings"
"github.com/goplus/llgo/xtool/nm"
)
// ParseDylibSymbols parses symbols from dynamic libraries specified in the lib string.
// It handles multiple libraries (e.g., -L/opt/homebrew/lib -llua -lm) and returns
// symbols if at least one library is successfully parsed. Errors from inaccessible
// libraries (like standard libs) are logged as warnings.
//
// Returns symbols and nil error if any symbols are found, or nil and error if none found.
func ParseDylibSymbols(lib string) ([]*nm.Symbol, error) {
fmt.Printf("parse dylib symbols from config lib:%s\n", lib)
dylibPaths, err := GenDylibPaths(lib)
if err != nil {
fmt.Printf("Warning: failed to generate some dylib paths: %v\n", err)
}
var symbols []*nm.Symbol
var parseErrors []string
for _, dylibPath := range dylibPaths {
if _, err := os.Stat(dylibPath); err != nil {
fmt.Printf("Warning: Failed to access dylib %s: %v\n", dylibPath, err)
continue
}
files, err := nm.New("").List(dylibPath)
if err != nil {
parseErrors = append(parseErrors, fmt.Sprintf("Failed to list symbols in dylib %s: %v", dylibPath, err))
continue
}
for _, file := range files {
symbols = append(symbols, file.Symbols...)
}
}
if len(symbols) > 0 {
if len(parseErrors) > 0 {
fmt.Printf("Warning: Some libraries could not be parsed: %v\n", parseErrors)
}
return symbols, nil
}
return nil, fmt.Errorf("no symbols found in any dylib. Errors: %v", parseErrors)
}
func GenDylibPaths(lib string) ([]string, error) {
parts := strings.Fields(lib)
var libPath, libName string
var dylibPaths []string
for _, part := range parts {
if strings.HasPrefix(part, "-L") {
libPath = part[2:]
} else if strings.HasPrefix(part, "-l") {
libName = part[2:]
if libPath != "" && libName != "" {
dylibPaths = append(dylibPaths, filepath.Join(libPath, "lib"+libName+".dylib"))
}
}
}
if len(dylibPaths) == 0 {
return nil, fmt.Errorf("failed to parse pkg-config output: %s", lib)
}
return dylibPaths, nil
}