numam-dpdk/mk/rte.subdir.mk
Ferruh Yigit 8fdb4a9b1e mk: parallelize make config
make config dependency resolving was always running serial,
parallelize it for better performance.

$ time make T=x86_64-native-linuxapp-gcc config
real    0m12.633s

$ time make -j8 T=x86_64-native-linuxapp-gcc config
real    0m1.826s

When config creation done under a single make target, using a for loop,
make has no control on the action, and it needs to run as implemented in
the rule. But if for loop converted into multiple targets, make can
detect independent targets and run them parallel based on -j parameter.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2017-01-30 19:13:35 +01:00

110 lines
3.3 KiB
Makefile

# BSD LICENSE
#
# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# .mk to build subdirectories
#
include $(RTE_SDK)/mk/internal/rte.install-pre.mk
include $(RTE_SDK)/mk/internal/rte.clean-pre.mk
include $(RTE_SDK)/mk/internal/rte.build-pre.mk
CLEANDIRS = $(addsuffix _clean,$(DIRS-y) $(DIRS-n) $(DIRS-))
VPATH += $(SRCDIR)
_BUILD = $(DIRS-y)
_INSTALL = $(INSTALL-FILES-y) $(SYMLINK-FILES-y)
_CLEAN = $(CLEANDIRS)
.PHONY: all
all: install
.PHONY: install
install: build _postinstall
_postinstall: build
.PHONY: build
build: _postbuild
.SECONDEXPANSION:
.PHONY: $(DIRS-y)
$(DIRS-y):
@[ -d $(CURDIR)/$@ ] || mkdir -p $(CURDIR)/$@
@echo "== Build $S/$@"
@$(MAKE) S=$S/$@ -f $(SRCDIR)/$@/Makefile -C $(CURDIR)/$@ all
.PHONY: clean
clean: _postclean
%_clean:
@echo "== Clean $S/$*"
@if [ -f $(SRCDIR)/$*/Makefile -a -d $(CURDIR)/$* ]; then \
$(MAKE) S=$S/$* -f $(SRCDIR)/$*/Makefile -C $(CURDIR)/$* clean ; \
fi
@rm -f $(_BUILD_TARGETS) $(_INSTALL_TARGETS) $(_CLEAN_TARGETS)
#
# include .depdirs and define rules to order priorities between build
# of directories.
#
-include $(RTE_OUTPUT)/.depdirs
define depdirs_rule
$(1): $(sort $(patsubst $(S)/%,%,$(LOCAL_DEPDIRS-$(S)/$(1))))
endef
$(foreach d,$(DIRS-y),$(eval $(call depdirs_rule,$(d))))
DEPDIRS = $(wildcard $(addprefix $(S)/,$(DIRS-y)))
.PHONY: depdirs $(DEPDIRS)
depdirs: $(DEPDIRS)
$(DEPDIRS):
@$(MAKE) S=$@ -f $(RTE_SRCDIR)/$@/Makefile depdirs
.PHONY: depgraph
depgraph:
@for d in $(DIRS-y); do \
echo " \"$(S)\" -> \"$(S)/$$d\"" ; \
if [ -f $(SRCDIR)/$$d/Makefile ]; then \
$(MAKE) S=$S/$$d -f $(SRCDIR)/$$d/Makefile depgraph ; \
fi ; \
done
include $(RTE_SDK)/mk/internal/rte.install-post.mk
include $(RTE_SDK)/mk/internal/rte.clean-post.mk
include $(RTE_SDK)/mk/internal/rte.build-post.mk
.PHONY: FORCE
FORCE: