Some scribbles on EFI compression

grub-core/lib/posix_wrap/stdlib.h

@@ -22,6 +22,8 @@
 #include <grub/mm.h>
 #include <grub/misc.h>
 
+#ifndef GRUB_EMBED_DECOMPRESSOR
+
 static inline void 
 free (void *ptr)
 {
@@ -46,6 +48,8 @@ realloc (void *ptr, grub_size_t size)
   return grub_realloc (ptr, size);
 }
 
+#endif
+
 static inline int
 abs (int c)
 {

grub-core/lib/xzembed/xz_private.h

@@ -91,6 +91,10 @@ enum xz_ret xz_dec_bcj_run(struct xz_dec_bcj *s,
 		struct xz_dec_lzma2 *lzma2, struct xz_buf *b);
 
 /* Free the memory allocated for the BCJ filters. */
+#ifndef GRUB_EMBED_DECOMPRESSOR
 #define xz_dec_bcj_end(s) kfree(s)
+#else
+#define xz_dec_bcj_end(s)
+#endif
 
 #endif