numam-dpdk/lib/librte_efd/Makefile
Olivier Matz feb9f680cd mk: optimize directory dependencies
Before this patch, the management of dependencies between directories
had several issues:

- the generation of .depdirs, done at configuration is slow: it can take
  more than one minute on some slow targets (usually ~10s on a standard
  PC without -j).

- for instance, it is possible to express a dependency like:
  - app/foo depends on lib/librte_foo
  - and lib/librte_foo depends on app/bar
  But this won't work because the directories are traversed with a
  depth-first algorithm, so we have to choose between doing 'app' before
  or after 'lib'.

- the script depdirs-rule.sh is too complex.

- we cannot use "make -d" for debug, because the output of make is used for
  the generation of .depdirs.

This patch moves the DEPDIRS-* variables in the upper Makefile, making
the dependencies much easier to calculate. A DEPDIRS variable is still
used to process library dependencies in LDLIBS.

After this commit, "make config" is almost immediate.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Tested-by: Robin Jarry <robin.jarry@6wind.com>
Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-03-27 23:28:43 +02:00

51 lines
2.0 KiB
Makefile

# BSD LICENSE
#
# Copyright(c) 2016-2017 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
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# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
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#
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
include $(RTE_SDK)/mk/rte.vars.mk
# library name
LIB = librte_efd.a
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
EXPORT_MAP := rte_efd_version.map
LIBABIVER := 1
# all source are stored in SRCS-y
SRCS-$(CONFIG_RTE_LIBRTE_EFD) := rte_efd.c
# install this header file
SYMLINK-$(CONFIG_RTE_LIBRTE_EFD)-include := rte_efd.h
include $(RTE_SDK)/mk/rte.lib.mk