Note that static analysis was the only remaining user of the 32-bit toolchain, so I've removed win32-clang-cl (or rather, renamed it to win32-clang-cl-st-an).
--HG--
rename : build/build-clang/clang-win32.json => build/build-clang/clang-win32-st-an.json
rename : build/build-clang/clang-win64.json => build/build-clang/clang-win64-st-an.json
rename : taskcluster/scripts/misc/build-clang32-windows.sh => taskcluster/scripts/misc/build-clang32-st-an-windows.sh
rename : taskcluster/scripts/misc/build-clang64-windows.sh => taskcluster/scripts/misc/build-clang64-st-an-windows.sh
I was able to reproduce the failure to apply llvm-dsymutil on the last
mozilla-central revision before debug info was temporarily disabled for
rust, and validated that the problem was gone in clang 4.
After some bisection, r289565 was identified as having fixed the
problem, which, reading the commit message, makes sense.
It was however not possible to simply cherry-pick, because of multiple
code changes between 3.9 and 4. However, apart from the volume of
conflicting changes, it was more or less straightforward to backport.
Interestingly, the patch for r313872 was relying on changes from
r289565, which is why it required a variant specifically for 3.9, but
now we can use the same patch as for other versions. Well, except
there's a small difference in the context, and build-clang.py doesn't
allow fuzz, so we manually edit the patch to remove that line from the
context.
--HG--
extra : rebase_source : de0ab262d401c37c0e9300b0ef7923a07c009d87
I was able to reproduce the failure to apply llvm-dsymutil on the last
mozilla-central revision before debug info was temporarily disabled for
rust, and validated that the problem was gone in clang 4.
After some bisection, r289565 was identified as having fixed the
problem, which, reading the commit message, makes sense.
It was however not possible to simply cherry-pick, because of multiple
code changes between 3.9 and 4. However, apart from the volume of
conflicting changes, it was more or less straightforward to backport.
Interestingly, the patch for r313872 was relying on changes from
r289565, which is why it required a variant specifically for 3.9, but
now we can use the same patch as for other versions. Well, except
there's a small difference in the context, and build-clang.py doesn't
allow fuzz, so we manually edit the patch to remove that line from the
context.
--HG--
extra : rebase_source : cda077132ee499a8ffdc4c88a1160cfa5fd86a97
Before, the build root was not in a Docker cache or volume. With
current Docker works, that meant AUFS. We know AUFS is slow under
I/O load and can cause random failures due to missing data after
writes.
This commit changes the build root to a known Docker volume, which
will be backed by EXT4 and won't have the problems of AUFS.
MozReview-Commit-ID: 6WOH0yednAv
--HG--
extra : rebase_source : bbff0f00f55acdbe068fdf617a7903b8a303c397
32-bit clang-cl.exe was looking specifically for HostX86\x86\link.exe, which doesn't exist in our automation package. Make it look in HostX64\x86 instead.
This is an ugly hack and it would be preferable to just use a 64-bit compiler (bug 1414287).
In a proper VS install, the path to cl.exe looks like:
...\VC\Tools\MSVC\14.11.25503\bin\HostX64\x64\cl.exe
In our automation, the path is just:
...\VC\bin\HostX64\x64\cl.exe
Clang tries to do some sanity-checking to make sure that the cl.exe it finds is the Microsoft compiler and not some other program. But the checks are a little too strict for us, so just look for "bin\Host*\*\cl.exe".
Ideally, we'd backport it to the clang 4 toolchain too, but that results
in silently(!) missing crash symbols for libxul.
--HG--
extra : rebase_source : a3024abf720ea6e9dc0e3271a5aa2ebfae9bebee
Using /home/worker is the build directory has a 30% talos performance
loss, because test machines has a /home mount directory.
MozReview-Commit-ID: 554IPMRWgzK
--HG--
extra : rebase_source : 00827d3f6bd705419bc801eb05b543af1ddc274f
shutil.copy2() will fail if the destination directory doesn't exist.
Switch to copy_tree() instead so we don't need to worry about the
error cases of copy2() and copytree().
MozReview-Commit-ID: 3kHfgL57KfX
--HG--
extra : rebase_source : c7335b0c2854d53699dda0f0d2bd9d17b57c4e5d
We're soon going to build multiple versions of clang and gcc for linux,
and we need to differentiate them. Furthermore, there is a need for the
base-toolchains builds to use a fixed version of clang and gcc. So
rename the clang and gcc toolchain jobs to include their version, add
aliases to satisfy all existing jobs, and adjust the base-toolchains
jobs to use the explicit version.
--HG--
rename : build/build-clang/clang-linux64.json => build/build-clang/clang-3.9-linux64.json
rename : taskcluster/scripts/misc/build-gcc-linux.sh => taskcluster/scripts/misc/build-gcc-4.9-linux.sh
Using /home/worker is the build directory has a 30% talos performance
loss, because test machines has a /home mount directory.
MozReview-Commit-ID: zehcGJrUQX
--HG--
extra : source : feedcde68c2a54da210f03eb287ab5c862fc982b
extra : intermediate-source : 485d1af7805ad9fa0e701c3571fc1291fbfc6850
The return-empty-string-non-mangled.patch apparently landed in r249437
upstream, so we don't need to carry around our own version. The patch
is still nominally used for building clang on Mac, so I have not removed
it from version control.
Instead of relying on the assumption that a previous run of CMake was
using the same arguments, remove the CMake cache file and re-run it.
This way the script is robust no matter what kind of build directory
existed from before.
Since individual config files have different source repos declared,
it's better to deal with each individual source directory separately.
Also make sure to revert any of the existing changes in each directory
so that attempts to apply patches to the source directory or import
our static analysis checks into clang-tidy are guaranteed to always
succeed.
This revision fixes a clang devirtualization bug and also includes
support for -fbuiltin-module-map, which is useful in making ffmpeg
compile correctly.
clang-cl would normally derive its MSVC emulation bits from the
installed MSVC version, but we don't have an installed MSVC in this
scenario, so we have to use command-line options instead. We use
similar options for Gecko builds.
In a taskcluster world, we cannot used fixed directories, since we don't
know the absolute path of the directory we're building in ahead of time.
(We could pass it in to the build script, or discover it in the script
itself, but that wouldn't really solve the next problem.) This change
does make the builds not reproducible, but as we're using clang-cl
purely for secondary purposes on Windows, rather than for shipping
Firefox binaries (as we would on Mac, say), I don't feel bad about
punting the reproducibility issue down the road a bit.
We cannot depend on a fixed location for cl.exe in a taskcluster world.
We therefore need to make our build-clang.py script accomodate relative
path names for cc/cxx and assume those are binaries that should be
looked up on PATH.
We also need to modify the Linux build script so that the virtualenv is
used to look up the new 'which' package.
We need to rebuild clang with libc++ to get compatible headers for cross
builds. libc++abi is a dependency of libc++, as the build instructions
says [0].
[0] http://libcxx.llvm.org/docs/BuildingLibcxx.html
Ideally, we'd use the tarballs from
http://llvm.org/releases/download.html but I didn't feel like modifying
the script more than I already did to make it work at all (bug 1262735).
The new tarball for Linux was built on
https://tools.taskcluster.net/task-inspector/#LCUn8aEgTBeRJ11a3qTlDQ/0
The new tarball for Mac was built on a loaner, after installing cmake
and ninja, as well as building ld64 127.2 from source because the
installed version would assert while building clang. The latter required
manually adding some missing headers to /usr/include. TSAN was also
disabled because it requires APIs that are not available on the OSX
version on the build slaves (e.g. pthread_introspection_hook_install).
Building clang also required using a mac clang from tooltool, the system
one lacking support for atomics.
Both point to the same path for cc and cxx, but not for gcc_dir, which
makes no sense. That's the only significant difference between both, so
just merge them both, and use the merged file in the taskcluster build
script.
Instead, copy libgcc from the GCC used to build clang at each stage.
When passing --gcc-toolchain, the flag ends up appearing in the output
of llvm-config, and completely defeats the purpose of copying libgcc in
clang/lib/gcc.
Since build-clang.py requires a gcc_dir to be set, and we're using GCC
from there to build clang, we might as well copy libgcc from there
instead of building a fresh GCC. On the taskcluster job building clang,
GCC comes from a tooltool package that is already the result of
build-gcc anyways.
When passing -DCMAKE_C_COMPILER="gcc -flags" to CMake, ninja then tries
to literally call "gcc -flags", not "gcc" "-flags", and a "gcc -flags"
file obviously doesn't exist, so the build fails.
This fixes a regression from bug 1042132. Hopefully, this also doesn't
regress bug 1042132 itself.
David Major
Jesse Schwartzentruber
Nathan Froyd
Andi-Bogdan Postelnicu
Mike Hommey
Andreea Pavel
Ciure Andrei
Ryan VanderMeulen
Marco Castelluccio
Christian Holler
Gregory Szorc
Sylvestre Ledru
Boris Zbarsky
Wander Lairson Costa
Ting-Yu Chou
Wes Kocher
Ehsan Akhgari
Iris Hsiao
Phil Ringnalda