These are potentially computed from inside each subdir, and in addition
due to what appears to be a regression in GNU make 4.4, where it is
reevaluating variables that contain $(shell) functions, many times (in
the order of thousands, this was slowing down the build, were on the
Debian amd64 build daemons it went from 5m with GNU make 4.3 to 2h40m
with GNU make 4.4. Although the bulk of the slow down has been fixed
with previous commits, the remaining optimizations are only to avoid
this potentially happening again in the future, and to reduce useless
duplicate work.
Instead of trying to cache the values from within make itself, where
programming this there is extremely painful, and does not seem to be
able to greatly reduce the number of calls, because the build system
is going to be called multiple times for different targets. Simply
externalize the generation into several shell scripts, that we call
to generate a make fragment that then we include from the various
Makefiles.
For a Debian build with GNU make 4.3, this reduces the amount of total
pkg-config calls from around ~1600 to 128, for dpkg-buildflags from
~1100 down to 6, and for dpkg-parsechangelog from ~56 to 17, but the
slow down is not as significant there anyway.
For a Debian build with GNU make 4.4, this reduces the amount of total
pkg-config calls from around ~2600 to 128, for dpkg-buildflags from
~2800 down to 6, and for dpkg-parsechangelog from ~350 to 21.
For a Debian build with GNU make 4.4, this reduces the build time
on this system from 2m10s to ~ 1m30s.
Change-Id: I427d0ea5106dc6ed1ff9e664ccdba2fa0725b7d0
This variable is unknown to dpkg-buildflags. This also reduces the
amount of global calls generated with GNU make 4.4 (which has a
regression causing massive amounts of shell calls to be generated).
Change-Id: Ia9d7099228bf5e181df4725939ed4f76f1e63dc9
Starting with GNU make 4.4, build time have massively regressed
where before they would take 5m on amd64 now can take 2h40m. While this
seems clearly broken, the release notes are filled with notices for
breaking changes, and in particular the one for passing all make
variables down to the invoked programs executed via the «shell» GNU make
function, so it is not clear what is expected breakage and what is not.
This has been reported in Debian, but not yet upstream, and while it
seems like a clear regression, it's not clear what will be the upstream
take on it. For now apply workarounds that do not change semantics, and
which do not regress with older GNU make versions.
Use the GNU make «origin» function instead of «?=» which defaults to
defining a variable as a recursive one. Coerce already defined variables
into simple ones to avoid GNU make re-evaluating these variables for
each «shell» function invocation.
Ref: https://bugs.debian.org/1092051
Change-Id: I076fc05dd616918473a22e7e942fecfdc9851d47
Don't just check for the existence of liburing during compilation, but
also check for the version, as we require at least version 2.3 and
builds fail with an older version.
Change-Id: If04d532a847c717fd80f326e46376cbbdc663086
We rely on dpkg-buildflags to set -O2, but that may not be available on
the target system. Explicitly set -O3, and also enable LTO.
Change-Id: I593ec7ead08cb0a47922ba4db684b0292647f2bc
Whilst working on the Reproducible Builds effort [0], we noticed that
rtpengine could not be built reproducibly.
This is because the manpages generated by pandoc contained the current
build date.
An (upstreamable) patch is attached that uses the value from the
SOURCE_DATE_EPOCH environment variable if available.
[0] https://reproducible-builds.org/
Change-Id: I2eb22dc5f57af69d217fb06c1c126e7e40dbd451
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1012766
> Whilst working on the Reproducible Builds effort [0] we noticed that
> rtpengine could not be built reproducibly.
>
> Whilst it did use the value from debian/changelog, the RELEASE_DATE
> variable changed due to underlying system timezone setting. A patch
> is attached that passes -u/--utc to the call to date(1).
>
> [0] https://reproducible-builds.org/
If the CFLAGS already contain -O0, skip adding the hardening flags, as
they force inclusion of -O2
Change-Id: I12ab0a61fff169954c73f3a714e563234c841483
also eliminate `` in makefiles
document external bcg729 requirement for Debian building
closes#460
Change-Id: Iadecbc6df81c2fe876acc20c25c8be0e85391779
Richard Fuchs
Guillem Jover
Chris Lamb