Linux: Fix GNU ld detection for pck_embed linker script

platform/linuxbsd/detect.py

@@ -387,7 +387,9 @@ def configure(env):
         import subprocess
         import re
 
-        linker_version_str = subprocess.check_output([env.subst(env["LINK"]), "-Wl,--version"]).decode("utf-8")
+        linker_version_str = subprocess.check_output(
+            [env.subst(env["LINK"]), "-Wl,--version"] + env.subst(env["LINKFLAGS"])
+        ).decode("utf-8")
         gnu_ld_version = re.search("^GNU ld [^$]*(\d+\.\d+)$", linker_version_str, re.MULTILINE)
         if not gnu_ld_version:
             print(