[dpdk-dev] [PATCH v8 0/6] Reproducible build

luca.boccassi at gmail.com luca.boccassi at gmail.com
Thu Oct 12 15:15:48 CEST 2017

From: Luca Boccassi <bluca at debian.org>

In the past couple of years a concerted effort among almost all Linux
distros has been striving toward achieving reproducible builds. [1]
This involves changes to the toolchain, new tools and CI systems. [2]

v1 fixed the documentation, examples and linker script generation.
v2 fixes all problems, which were caused by unstable order of headers
inclusion, source files listing and object file listing when passing
them to the compiler.
DPDK's build, at least with the default configuration, is fully
reproducible with this patch series as tested by the Reproducible
Builds developers experimental toolchain. [3]

v3 restores the first patch, which was eaten by git send-email.

v4 drops the patch that reorders rebuilds, and adds a patch to make
the inclusion of headers deterministic with regards to GCC embedding
the full file path when expading __FILE__ and when writing the
directory listing in the DWARF objects.
It also drops the first 2 patches which have already been merged.

v5 adds the -I$(SRCDIR) workaround to librte_eal linuxapp's and
librte_gro's Makefiles.

v6 fixes copypasta added in v5 - librte-gro's Makefile should have used
$(SRCDIR) rather than $(SRCDIR)/include.

v7 dropped the big patch to change the CFLAGS in all libraries Makefiles
and instead uses a much simpler approach suggested by Ferruh (thanks!),
which consists in installing the library public headers symlinks before
building. Although the drawback is that the DWARF directory listing
will always include the user configured build output directory, it is
a much smaller patch that will be rendered obsolete by the move to Meson

v8 fixes a missing dependency problem in rte.lib.mk from the build target
to the _preinstall target, which could have caused race conditions in
parallel builds. Spotted by Thomas. Thanks!

Luca Boccassi (6):
  mk: sort list of shared objects in linker script
  mk: sort list of files in examples.dox
  mk: sort headers before wildcard inclusion
  mk: sort source files before passing them to the compiler
  mk: sort object files when building deps lists
  mk: install symlinks before build step

 drivers/net/cxgbe/Makefile                                 | 2 +-
 drivers/net/e1000/Makefile                                 | 2 +-
 drivers/net/fm10k/Makefile                                 | 2 +-
 drivers/net/i40e/Makefile                                  | 2 +-
 drivers/net/ixgbe/Makefile                                 | 2 +-
 drivers/net/qede/Makefile                                  | 2 +-
 drivers/net/sfc/Makefile                                   | 2 +-
 drivers/net/thunderx/Makefile                              | 2 +-
 examples/ip_pipeline/Makefile                              | 2 +-
 examples/multi_process/client_server_mp/mp_server/Makefile | 2 +-
 examples/server_node_efd/server/Makefile                   | 2 +-
 lib/librte_eal/common/Makefile                             | 2 +-
 mk/rte.app.mk                                              | 4 ++--
 mk/rte.combinedlib.mk                                      | 2 +-
 mk/rte.hostapp.mk                                          | 4 ++--
 mk/rte.lib.mk                                              | 8 +++++++-
 mk/rte.sdkdoc.mk                                           | 2 +-
 mk/rte.shared.mk                                           | 4 ++--
 18 files changed, 27 insertions(+), 21 deletions(-)


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