From c883122acc0d97648d8b8f4726709017674e4420 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 13 Aug 2012 10:23:02 -0400 Subject: [PATCH] perf tools: 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: Borislav Petkov Signed-off-by: Steven Rostedt Acked-by: Steven Rostedt Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20120815163923.GD15989@aftab.osrc.amd.com Signed-off-by: Arnaldo Carvalho de Melo --- 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),)