Hello Michael, Here is my patch for dealing with race between 2 jobs of primary Makefile: >From 697f6ffa0d67b676fc2d75f65541c6e12108829d Mon Sep 17 00:00:00 2001 From: Noam Camus <noamc@xxxxxxxxxx> Date: Fri, 16 Nov 2012 15:12:48 +0200 Subject: [PATCH] Makefile: solve race between make jobs. Fix occasionally compilation failures when source tree is distcleaned. The compilation is failing over file scripts/mod/empty.c The error is because empty.o depends on some headers from: arch/<arch>/include/generated/asm/ I see that there is a race between two targets in main Makefile (j=2): 1) asm-generic 2) scripts_basic asm-generic: generates all wrappers in atch/<arch>/include/generated/asm/ scripts_basic: calls scripts/Makefile.build --> performs target __build --> depends on targets defined at variable $(always) --> compile scripts/mod/empty.c Occasionally compilation of empty.c starts before all its required headers created by asm-generic are available. This dependency will make sure that this situation can not happen. Signed-off-by: Noam Camus <noamc@xxxxxxxxxx> --- Makefile | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/Makefile b/Makefile index 5be2ee8..00330a1 100644 --- a/Makefile +++ b/Makefile @@ -415,7 +415,7 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ # Basic helpers built in scripts/ PHONY += scripts_basic -scripts_basic: +scripts_basic: asm-generic $(Q)$(MAKE) $(build)=scripts/basic $(Q)rm -f .tmp_quiet_recordmcount -- 1.7.1 Please comment. Noam Camus -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
