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[Qemu-devel] [PATCH] fix tool/libuser makefile race
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH] fix tool/libuser makefile race |
Date: |
Fri, 18 Dec 2009 11:40:32 +0100 |
I just had this race happen on me while building qemu. The problematic
file in my case was cutils.o. I'm using GNU make's order-only
dependencies to avoid that "make recurse-all" builds the tools as well.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
Makefile | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/Makefile b/Makefile
index d555bb2..373a861 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,10 @@ romsubdir-%:
ALL_SUBDIRS=$(TARGET_DIRS) $(patsubst %,pc-bios/%, $(ROMS))
-recurse-all: $(SUBDIR_RULES) $(ROMSUBDIR_RULES)
+# Some files are shared between the tools and the emulators. So there
+# can be a race when the main makefile starts building xyz.o, while
+# the recursive make sees a partially built xyz.o and ar(1) fails.
+recurse-all: $(SUBDIR_RULES) $(ROMSUBDIR_RULES) | $(TOOLS)
#######################################################################
# QObject
--
1.6.5.2
- [Qemu-devel] [PATCH] fix tool/libuser makefile race,
Paolo Bonzini <=
[Qemu-devel] [PATCH] Use vpath directive, Paolo Bonzini, 2009/12/21