da15fc2fa9
The Yocto build system does a 'make clean' when rebuilding due to changed dependencies, and that consistently fails for me (causing the whole BSP build to fail) with errors such as | find: '[...]/perf/1.0-r9/perf-1.0/plugin_mac80211.so': No such file or directory | find: '[...]/perf/1.0-r9/perf-1.0/plugin_mac80211.so': No such file or directory | find: find: '[...]/perf/1.0-r9/perf-1.0/libtraceevent.a''[...]/perf/1.0-r9/perf-1.0/libtraceevent.a': No such file or directory: No such file or directory | [...] | find: cannot delete '/mnt/xfs/devel/pil/yocto/tmp-glibc/work/wandboard-oe-linux-gnueabi/perf/1.0-r9/perf-1.0/util/.pstack.o.cmd': No such file or directory Apparently (despite the comment), 'make clean' ends up launching multiple sub-makes that all want to remove the same things - perhaps this only happens in combination with a O=... parameter. In any case, we don't lose much by explicitly disabling the parallelism for the clean target, and it makes automated builds much more reliable. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180705131527.19749-1-linux@rasmusvillemoes.dk Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
112 lines
2.5 KiB
Makefile
112 lines
2.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# This is a simple wrapper Makefile that calls the main Makefile.perf
|
|
# with a -j option to do parallel builds
|
|
#
|
|
# If you want to invoke the perf build in some non-standard way then
|
|
# you can use the 'make -f Makefile.perf' method to invoke it.
|
|
#
|
|
|
|
#
|
|
# Clear out the built-in rules GNU make defines by default (such as .o targets),
|
|
# so that we pass through all targets to Makefile.perf:
|
|
#
|
|
.SUFFIXES:
|
|
|
|
#
|
|
# We don't want to pass along options like -j:
|
|
#
|
|
unexport MAKEFLAGS
|
|
|
|
#
|
|
# Do a parallel build with multiple jobs, based on the number of CPUs online
|
|
# in this system: 'make -j8' on a 8-CPU system, etc.
|
|
#
|
|
# (To override it, run 'make JOBS=1' and similar.)
|
|
#
|
|
ifeq ($(JOBS),)
|
|
JOBS := $(shell (getconf _NPROCESSORS_ONLN || egrep -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
|
|
ifeq ($(JOBS),0)
|
|
JOBS := 1
|
|
endif
|
|
endif
|
|
|
|
#
|
|
# Only pass canonical directory names as the output directory:
|
|
#
|
|
ifneq ($(O),)
|
|
FULL_O := $(shell readlink -f $(O) || echo $(O))
|
|
endif
|
|
|
|
#
|
|
# Only accept the 'DEBUG' variable from the command line:
|
|
#
|
|
ifeq ("$(origin DEBUG)", "command line")
|
|
ifeq ($(DEBUG),)
|
|
override DEBUG = 0
|
|
else
|
|
SET_DEBUG = "DEBUG=$(DEBUG)"
|
|
endif
|
|
else
|
|
override DEBUG = 0
|
|
endif
|
|
|
|
define print_msg
|
|
@printf ' BUILD: Doing '\''make \033[33m-j'$(JOBS)'\033[m'\'' parallel build\n'
|
|
endef
|
|
|
|
define make
|
|
@$(MAKE) -f Makefile.perf --no-print-directory -j$(JOBS) O=$(FULL_O) $(SET_DEBUG) $@
|
|
endef
|
|
|
|
#
|
|
# Needed if no target specified:
|
|
# (Except for tags and TAGS targets. The reason is that the
|
|
# Makefile does not treat tags/TAGS as targets but as files
|
|
# and thus won't rebuilt them once they are in place.)
|
|
#
|
|
all tags TAGS:
|
|
$(print_msg)
|
|
$(make)
|
|
|
|
ifdef MAKECMDGOALS
|
|
has_clean := 0
|
|
ifneq ($(filter clean,$(MAKECMDGOALS)),)
|
|
has_clean := 1
|
|
endif # clean
|
|
|
|
ifeq ($(has_clean),1)
|
|
rest := $(filter-out clean,$(MAKECMDGOALS))
|
|
ifneq ($(rest),)
|
|
$(rest): clean
|
|
endif # rest
|
|
endif # has_clean
|
|
endif # MAKECMDGOALS
|
|
|
|
#
|
|
# Explicitly disable parallelism for the clean target.
|
|
#
|
|
clean:
|
|
$(make) -j1
|
|
|
|
#
|
|
# The build-test target is not really parallel, don't print the jobs info,
|
|
# it also uses only the tests/make targets that don't pollute the source
|
|
# repository, i.e. that uses O= or builds the tarpkg outside the source
|
|
# repo directories.
|
|
#
|
|
# For a full test, use:
|
|
#
|
|
# make -C tools/perf -f tests/make
|
|
#
|
|
build-test:
|
|
@$(MAKE) SHUF=1 -f tests/make REUSE_FEATURES_DUMP=1 MK=Makefile SET_PARALLEL=1 --no-print-directory tarpkg out
|
|
|
|
#
|
|
# All other targets get passed through:
|
|
#
|
|
%: FORCE
|
|
$(print_msg)
|
|
$(make)
|
|
|
|
.PHONY: tags TAGS FORCE Makefile
|