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authorDaniel Mentz <danielmentz@google.com>2022-04-13 16:36:49 -0700
committerMasahiro Yamada <masahiroy@kernel.org>2022-05-08 03:16:59 +0900
commit1e8ca62b79dec20aeded4fe283f4890e5016767a (patch)
tree38a427028e79a962d72b53c3984ca3e383b8c41c /kernel/gen_kheaders.sh
parentc77d06e70d59cbc6e3c22bf644bb0b197a5fc182 (diff)
kheaders: Have cpio unconditionally replace files
For out-of-tree builds, this script invokes cpio twice to copy header files from the srctree and subsequently from the objtree. According to a comment in the script, there might be situations in which certain files already exist in the destination directory when header files are copied from the objtree: "The second CPIO can complain if files already exist which can happen with out of tree builds having stale headers in srctree. Just silence CPIO for now." GNU cpio might simply print a warning like "newer or same age version exists", but toybox cpio exits with a non-zero exit code unless the command line option "-u" is specified. To improve compatibility with toybox cpio, add the command line option "-u" to unconditionally replace existing files in the destination directory. Signed-off-by: Daniel Mentz <danielmentz@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'kernel/gen_kheaders.sh')
-rwxr-xr-xkernel/gen_kheaders.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/gen_kheaders.sh b/kernel/gen_kheaders.sh
index 1966a749e0d9..0c78e64f747d 100755
--- a/kernel/gen_kheaders.sh
+++ b/kernel/gen_kheaders.sh
@@ -74,7 +74,7 @@ fi
# of tree builds having stale headers in srctree. Just silence CPIO for now.
for f in $dir_list;
do find "$f" -name "*.h";
-done | cpio --quiet -pd $cpio_dir >/dev/null 2>&1
+done | cpio --quiet -pdu $cpio_dir >/dev/null 2>&1
# Remove comments except SDPX lines
find $cpio_dir -type f -print0 |