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- From fe2f5da4b0f8994169c53e84b7cb8a0feefc97b5 Mon Sep 17 00:00:00 2001
- From: Sergei Trofimovich <slyfox@gentoo.org>
- Date: Sun, 26 Jan 2020 18:35:13 +0000
- Subject: [PATCH] squashfs-tools: fix build failure against gcc-10
- MIME-Version: 1.0
- Content-Type: text/plain; charset=UTF-8
- Content-Transfer-Encoding: 8bit
-
- On gcc-10 (and gcc-9 -fno-common) build fails as:
-
- ```
- cc ... -o mksquashfs
- ld: read_fs.o:(.bss+0x0):
- multiple definition of `fwriter_buffer'; mksquashfs.o:(.bss+0x400c90): first defined here
- ld: read_fs.o:(.bss+0x8):
- multiple definition of `bwriter_buffer'; mksquashfs.o:(.bss+0x400c98): first defined here
- ```
-
- gcc-10 will change the default from -fcommon to fno-common:
- https://gcc.gnu.org/PR85678.
-
- The error also happens if CFLAGS=-fno-common passed explicitly.
-
- Reported-by: Toralf Förster
- Bug: https://bugs.gentoo.org/706456
- Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
- ---
- squashfs-tools/mksquashfs.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
- --- a/squashfs-tools/mksquashfs.h
- +++ b/squashfs-tools/mksquashfs.h
- @@ -143,7 +143,7 @@ struct append_file {
- #endif
-
- extern struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
- -struct cache *bwriter_buffer, *fwriter_buffer;
- +extern struct cache *bwriter_buffer, *fwriter_buffer;
- extern struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
- *to_frag, *locked_fragment, *to_process_frag;
- extern struct append_file **file_mapping;
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