[klibc] Never clean files in quilt status directory
The top-level "distclean" and "mrproper" targets delete zero-size
files in the source, perhaps assumed to be stamp files. This is fine
for actual source direcgtories, but disastrous for a quilt status
directory.
For each patch, quilt stores the previous versions of the modified
files in a subdirectory of .pc. If the patch creates a file, this
file will be empty. Removing it effectively removes the file creation
from the patch.
The .git directory is already excluded from the clean rules for
a similar reason, so do the same for .pc.
Link: https://www.zytor.com/pipermail/klibc/2018-July/003999.html
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
diff --git a/Makefile b/Makefile
index dc10fc5..cd15149 100644
--- a/Makefile
+++ b/Makefile
@@ -158,7 +158,7 @@
###
# clean: remove generated files
# mrproper does a full cleaning including .config and linux symlink
-FIND_IGNORE := \( -name .git \) -prune -o
+FIND_IGNORE := \( -name .git -o -name .pc \) -prune -o
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),RM $(wildcard $(rm-files)))
cmd_rmfiles = rm -f $(rm-files)
clean:
