build: compatible spaces in path outputted from pkg-config

xtool/env/env.go

@@ -22,6 +22,8 @@ import (
 	"os/exec"
 	"regexp"
 	"strings"
+
+	"github.com/goplus/llgo/internal/safesplit"
 )
 
 var (
@@ -29,6 +31,10 @@ var (
 	reFlag   = regexp.MustCompile(`[^ \t\n]+`)
 )
 
+func ExpandEnvToArgs(s string) []string {
+	return safesplit.SplitPkgConfigFlags(expandEnvWithCmd(s))
+}
+
 func ExpandEnv(s string) string {
 	return expandEnvWithCmd(s)
 }