diff options
Diffstat (limited to 'kernel/tools/perf/Makefile')
| -rw-r--r-- | kernel/tools/perf/Makefile | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/kernel/tools/perf/Makefile b/kernel/tools/perf/Makefile new file mode 100644 index 000000000..d31a7bbd7 --- /dev/null +++ b/kernel/tools/perf/Makefile @@ -0,0 +1,90 @@ +# +# 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) + +# +# The clean target is not really parallel, don't print the jobs info: +# +clean: + $(make) + +# +# The build-test target is not really parallel, don't print the jobs info: +# +build-test: + @$(MAKE) -f tests/make --no-print-directory + +# +# All other targets get passed through: +# +%: + $(print_msg) + $(make) + +.PHONY: tags TAGS |