diff options
| -rw-r--r-- | src/config/Config.lb | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/config/Config.lb b/src/config/Config.lb index eb37b1e5c2..43d6ecdeb0 100644 --- a/src/config/Config.lb +++ b/src/config/Config.lb @@ -162,9 +162,16 @@ makerule documentation action "doxygen corebootDoc.config" end +# Yes, the rule doesn't seem to make sense, but multiple images could try to +# create a romcc binary at the same time, clobbering each other. +# Our makefile architecture won't allow us to easily have the romcc target +# in the main makefile, so keep it here and move the race condition winner +# in place. That way, romcc may get compiled twice, but the binary will always +# be in a correct and valid state if it exists because the move is atomic. makerule ../romcc depends "$(TOP)/util/romcc/romcc.c" - action "$(HOSTCC) -g $(HOSTCFLAGS) $< -o $@" + action "$(HOSTCC) -g $(HOSTCFLAGS) $< -o romcc.tmpfile" + action "mv romcc.tmpfile $@" end makerule build_opt_tbl |