Re: [dpdk-dev] [PATCH v7 0/6] Reproducible build

[Stephen Hemminger <stephen@networkplumber.org>]

On Tue,  5 Sep 2017 21:51:53 +0100
luca.boccassi@gmail.com wrote:

> From: Luca Boccassi <luca.boccassi@gmail.com>
> 
> 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
> anyway.
> 
> [1] https://reproducible-builds.org/
> [2] https://reproducible-builds.org/tools/
> [3] https://wiki.debian.org/ReproducibleBuilds/ExperimentalToolchain#Us
> 
> 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                                              | 7 ++++++-
>  mk/rte.sdkdoc.mk                                           | 2 +-
>  mk/rte.shared.mk                                           | 4 ++--
>  18 files changed, 26 insertions(+), 21 deletions(-)
> 

How does this interact with propose new build process.
Hate to have do everything twice.