build: support pkg-config and link args

xtool/clang/check/check.go

@@ -0,0 +1,26 @@
+package check
+
+import (
+	"errors"
+	"os/exec"
+	"runtime"
+	"strings"
+)
+
+func CheckLinkArgs(args string) error {
+	cmdArgs := strings.Split(args, " ")
+	cmd := exec.Command("clang")
+	nul := "/dev/null"
+	if runtime.GOOS == "windows" {
+		nul = "NUL"
+	}
+	cmd.Args = append(cmd.Args, cmdArgs...)
+	cmd.Args = append(cmd.Args, "-x", "c", "-o", nul, "-")
+	src := "int main() {return 0;}"
+	srcIn := strings.NewReader(src)
+	cmd.Stdin = srcIn
+	if out, err := cmd.CombinedOutput(); err != nil {
+		return errors.New(string(out))
+	}
+	return nil
+}