build_patches: backport fix for squashfs build with gcc 10
This patch is already included in the openwrt-19.07 branch, so our backport can be removed when upgrading to or past OpenWrt 19.07.4. Signed-off-by: Fabian Bläse <fabian@blaese.de> Reviewed-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> [adjust commit title] Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
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From 1bbc1aa884902fd05cc579b53d68b2ba0b18683f Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Sun, 24 May 2020 12:23:31 +0200
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Subject: [PATCH] squashfs: Fix compile with GCC 10
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Fixes the following build error with GCC 10:
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/usr/bin/ld: read_fs.o:(.bss+0x0): multiple definition of `swap'; mksquashfs.o:(.bss+0x1b2a88): first defined here
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And a compile warning.
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Fixes: FS#3104, FS#3119
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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tools/squashfs/patches/140-gcc-10-fix.patch | 25 +++++++++++++++++++++
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1 file changed, 25 insertions(+)
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create mode 100644 tools/squashfs/patches/140-gcc-10-fix.patch
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diff --git a/tools/squashfs/patches/140-gcc-10-fix.patch b/tools/squashfs/patches/140-gcc-10-fix.patch
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new file mode 100644
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index 00000000000..a02641f3072
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--- /dev/null
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+++ b/tools/squashfs/patches/140-gcc-10-fix.patch
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@@ -0,0 +1,25 @@
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+Fixes the following build error with GCC 10:
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+ /usr/bin/ld: read_fs.o:(.bss+0x0): multiple definition of `swap'; mksquashfs.o:(.bss+0x1b2a88): first defined here
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+And a compile warning.
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+
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+--- a/squashfs-tools/read_fs.c
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++++ b/squashfs-tools/read_fs.c
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+@@ -61,7 +61,7 @@ extern int add_file(long long, long long
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+ fprintf(stderr, s, ## args); \
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+ } while(0)
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+
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+-int swap;
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++static int swap;
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+
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+ int read_block(int fd, long long start, long long *next, unsigned char *block, squashfs_super_block *sBlk)
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+ {
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+--- a/squashfs-tools/mksquashfs.c
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++++ b/squashfs-tools/mksquashfs.c
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+@@ -258,6 +258,7 @@ int read_sort_file(char *filename, int s
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+ void sort_files_and_write(struct dir_info *dir);
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+ struct file_info *duplicate(char *(get_next_file_block)(struct duplicate_buffer_handle *, unsigned int), struct duplicate_buffer_handle *file_start, long long bytes, unsigned int **block_list, long long *start, int blocks, struct fragment **fragment, char *frag_data, int frag_bytes);
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+ struct dir_info *dir_scan1(char *, int (_readdir)(char *, char *, struct dir_info *));
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++int dir_scan2(squashfs_inode *inode, struct dir_info *dir_info);
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+
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+ #define MKINODE(A) ((squashfs_inode)(((squashfs_inode) inode_bytes << 16) + (((char *)A) - data_cache)))
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+
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