X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=scripts%2FKbuild.include;h=914ea5eb16a8ceb6f7b5ebb53e784a7c92ba5ced;hb=refs%2Fheads%2Faccepted%2Ftizen_8.0_unified;hp=cdec22088423e42fc1a82357ef5f5fe41a0807be;hpb=21f577b0f48fd3a8871ca4116dad0e9c41ec42b2;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index cdec220..914ea5e 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -96,8 +96,29 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),\
  quiet_redirect :=
 silent_redirect := exec >/dev/null;
 
+# Delete the target on interruption
+#
+# GNU Make automatically deletes the target if it has already been changed by
+# the interrupted recipe. So, you can safely stop the build by Ctrl-C (Make
+# will delete incomplete targets), and resume it later.
+#
+# However, this does not work when the stderr is piped to another program, like
+#  $ make >&2 | tee log
+# Make dies with SIGPIPE before cleaning the targets.
+#
+# To address it, we clean the target in signal traps.
+#
+# Make deletes the target when it catches SIGHUP, SIGINT, SIGQUIT, SIGTERM.
+# So, we cover them, and also SIGPIPE just in case.
+#
+# Of course, this is unneeded for phony targets.
+delete-on-interrupt = \
+	$(if $(filter-out $(PHONY), $@), \
+		$(foreach sig, HUP INT QUIT TERM PIPE, \
+			trap 'rm -f $@; trap - $(sig); kill -s $(sig) $$$$' $(sig);))
+
 # printing commands
-cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(cmd_$(1))
+cmd = @set -e; $(echo-cmd) $($(quiet)redirect) $(delete-on-interrupt) $(cmd_$(1))
 
 ###
 # if_changed      - execute command if any prerequisite is newer than