kbuild: initramfs fix dependency checking for compressed target
When using initramfs compression, the data file compression suffix
gets quotes pulled in from Kconfig, e.g., initramfs_data.cpio".gz"
which make does not match a target and causes rebuild.
Fix this by filtering out quotes from the Kconfig string.
Fixes: 35e669e1a254 ("initramfs: select builtin initram compression algorithm on KConfig instead of Makefile")
Reviewed-by: Francisco Blas Izquierdo Riera (klondike) <klondike@klondike.es>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/usr/Makefile b/usr/Makefile
index 17a5132..746c3fd 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -5,7 +5,7 @@
klibcdirs:;
PHONY += klibcdirs
-suffix_y = $(CONFIG_INITRAMFS_COMPRESSION)
+suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
# Generate builtin.o based on initramfs_data.o