On Wed, Aug 15, 2012 at 11:59:35AM -0300, Arnaldo Carvalho de Melo wrote: > Of course! Those are the ultimate kernel killers!
Haha, this is what I'm answering next time I'm asked about what I do for a living :-). How about this? -- From: Steven Rostedt <[email protected]> Date: Mon, 13 Aug 2012 10:23:02 -0400 Subject: [PATCH] perf: Let O= makes handle relative paths When I did a compile of perf using a relative path for the output directory, the build failed when it tried to compile libtraceevent. This is because it continues to use the same relative path when the new working directory is in a different path. SUBDIR ../lib/traceevent/ /bin/sh: line 0: cd: ../../../nobackup/perf/: No such file or directory Makefile:74: *** output directory "../../../nobackup/perf/" does not exist. Stop. make: *** [../../../nobackup/perf///libtraceevent.a] Error 2 Make the path used an absolute path when building perf with O=. Boris: Teach Makefile to check whether the supplied O= directory exists and bail out if not. Reportedly, kernel dudes are idiots and need to be guarded so as not to shoot themselves in the foot when playing in the sandbox. Signed-off-by: Steven Rostedt <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> --- tools/scripts/Makefile.include | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index bde8521d56bb..96ce80a3743b 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -1,6 +1,8 @@ ifeq ("$(origin O)", "command line") - OUTPUT := $(O)/ - COMMAND_O := O=$(O) + dummy := $(if $(shell test -d $(O) || echo $(O)),$(error O=$(O) does not exist),) + ABSOLUTE_O := $(shell cd $(O) ; pwd) + OUTPUT := $(ABSOLUTE_O)/ + COMMAND_O := O=$(ABSOLUTE_O) endif ifneq ($(OUTPUT),) -- 1.7.11.rc1 -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
