main: disable compression if data checksums also disabled

src/ntfs2btrfs.cpp

@@ -3973,37 +3973,42 @@ Convert an NTFS filesystem to Btrfs.
  return 0;
  }
 
+ if (nocsum && compression != btrfs_compression::none) {
+ compression = btrfs_compression::none;
+ fmt::print("Disabling compression as it requires checksums to be enabled.\n");
+ } else {
 #ifndef WITH_ZLIB
- if (compression == btrfs_compression::zlib)
- throw runtime_error("Zlib compression not compiled in.");
+  if (compression == btrfs_compression::zlib)
+  throw runtime_error("Zlib compression not compiled in.");
 #endif
 
 #ifndef WITH_LZO
- if (compression == btrfs_compression::lzo)
- throw runtime_error("LZO compression not compiled in.");
+  if (compression == btrfs_compression::lzo)
+  throw runtime_error("LZO compression not compiled in.");
 #endif
 
 #ifndef WITH_ZSTD
- if (compression == btrfs_compression::zstd)
- throw runtime_error("Zstd compression not compiled in.");
+  if (compression == btrfs_compression::zstd)
+  throw runtime_error("Zstd compression not compiled in.");
 #endif
 
- switch (compression) {
- case btrfs_compression::zlib:
- fmt::print("Using Zlib compression.\n");
- break;
+  switch (compression) {
+  case btrfs_compression::zlib:
+  fmt::print("Using Zlib compression.\n");
+  break;
 
- case btrfs_compression::lzo:
- fmt::print("Using LZO compression.\n");
- break;
+  case btrfs_compression::lzo:
+  fmt::print("Using LZO compression.\n");
+  break;
 
- case btrfs_compression::zstd:
- fmt::print("Using Zstd compression.\n");
- break;
+  case btrfs_compression::zstd:
+  fmt::print("Using Zstd compression.\n");
+  break;
 
- case btrfs_compression::none:
- fmt::print("Not using compression.\n");
- break;
+ case btrfs_compression::none:
+ fmt::print("Not using compression.\n");
+ break;
+ }
  }
 
  switch (csum_type) {