Fix error exporting to X11 with embedded PCK

Fixes #32513.

platform/x11/detect.py

@@ -331,7 +331,13 @@ def configure(env):
         env.Append(LIBS=['execinfo'])
 
     if not env['tools']:
-        env.Append(LINKFLAGS=['-T', 'platform/x11/pck_embed.ld'])
+        import subprocess
+        import re
+        binutils_version = re.search('\s(\d+\.\d+)', str(subprocess.check_output(['ld', '-v']))).group(1)
+        if float(binutils_version) >= 2.30:
+            env.Append(LINKFLAGS=['-T', 'platform/x11/pck_embed.ld'])
+        else:
+            env.Append(LINKFLAGS=['-T', 'platform/x11/pck_embed.legacy.ld'])
 
     ## Cross-compilation
 

platform/x11/pck_embed.ld

@@ -1,9 +1,9 @@
 SECTIONS
 {
 	/* Add a zero-sized section; the exporter will patch it to enclose the data appended to the executable (embedded PCK) */
-	pck 0 (NOLOAD) :
+	pck 0 (INFO) :
 	{
-		/* Just some content to avoid the linker discarding the section */
+		/* binutils >= 2.30 allow it being zero-sized, but needs something between the braces to keep the section */
 		. = ALIGN(8);
 	}
 }

platform/x11/pck_embed.legacy.ld

@@ -0,0 +1,10 @@
+SECTIONS
+{
+	/* The exporter will patch this section to enclose the data appended to the executable (embedded PCK) */
+	pck 0 (INFO) : AT ( ADDR (.rodata) + SIZEOF (.rodata) )
+	{
+		/* binutils < 2.30 need some actual content for the linker not to discard the section */
+		BYTE(0);
+	}
+}
+INSERT AFTER .rodata;