Граф коммитов

5646 Коммитов

Автор SHA1 Сообщение Дата
Cosmin Sabou b8fd79f461 Backed out 5 changesets (bug 1644624, bug 1671555) for windows shippable bustage.
Backed out changeset fee83fc16940 (bug 1644624)
Backed out changeset afb2a7ff532c (bug 1671555)
Backed out changeset 609ac687f7e3 (bug 1644624)
Backed out changeset d91db0801099 (bug 1644624)
Backed out changeset ce09ad625b53 (bug 1644624)
2020-10-20 06:52:09 +03:00
Mike Hommey 7e240e7af2 Bug 1644624 - Pass LLVM flags from PROFILE_GEN_CFLAGS to the rust compiler. r=firefox-build-system-reviewers,dmajor
Differential Revision: https://phabricator.services.mozilla.com/D93729
2020-10-16 15:45:54 +00:00
Mike Hommey 5afb69830c Bug 1670156 - Use the same prefix/suffix for rust libraries on mingw builds. r=firefox-build-system-reviewers,dmajor
Rustc >= 1.44 changed the file names of the static libraries it
produces with -windows-gnu targets, to match that of mingw clang/gcc.

Considering we still build on 1.43, the best fix would be to derive the
prefix/suffix based on the version of rust, but that actually turns into
a hard-to-solve problem because of configure tests for bindgen also
depending on the prefix/suffix value to be known.

On the other hand, we're soon due to an update to 1.47, so the simpler
solution is to just push mingw builds to require 1.44 (settling for the
smallest upgrade possible for now) and to remove the split between C and
rust library prefix/suffixes.

Differential Revision: https://phabricator.services.mozilla.com/D93726
2020-10-16 16:06:19 +00:00
Narcis Beleuzu d493d96032 Merge autoland to mozilla-central. a=merge 2020-10-20 00:37:32 +03:00
Mozilla Releng Treescript 1319f81f81 Update configs. IGNORE BROKEN CHANGESETS CLOSED TREE NO BUG a=release ba=release 2020-10-19 16:39:05 +00:00
Paulo Matias 4dd77eeb91 Bug 1671695 - Fix system icu build; r=zbraniecki
Differential Revision: https://phabricator.services.mozilla.com/D93847
2020-10-19 11:54:20 +00:00
Ricky Stewart 362abcf949 Bug 1670357 - Remove `make` targets for cleaning: `clean`, `realclean`, `clobber`, `distclean`, `clobber_all`, `everything` r=firefox-build-system-reviewers,mhentges
The `clobber` targets are superseded by `mach clobber`, so we don't need them for any reason. The `clean` target is meant to get you to a post-`configure` state, but it doesn't really work, and if it's necessary for you to be in that state for some reason you can just clobber and re-`configure`, so it doesn't seem worth it to get it working again. Instead, delete all of them. Also delete `everything` which is not useful when `clobber` doesn't exist.

Differential Revision: https://phabricator.services.mozilla.com/D93514
2020-10-15 20:37:18 +00:00
Razvan Maries 5fa72e54df Backed out 2 changesets (bug 1440203) for causing bug 1670277. CLOSED TREE
Backed out changeset 0b10bf76fe35 (bug 1440203)
Backed out changeset 468878422866 (bug 1440203)
2020-10-10 03:39:33 +03:00
Jed Davis 3680ce4b19 Bug 1440203 - Support memfd_create in IPC shared memory. r=glandium
This commit also allows `memfd_create` in the seccomp-bpf policy for all
process types.

`memfd_create` is an API added in Linux 3.17 (and adopted by FreeBSD
for the upcoming version 13) for creating anonymous shared memory
not connected to any filesystem.  Supporting it means that sandboxed
child processes on Linux can create shared memory directly instead of
messaging a broker, which is unavoidably slower, and it should avoid
the problems we'd been seeing with overly small `/dev/shm` in container
environments (which were causing serious problems for using Firefox for
automated testing of frontend projects).

`memfd_create` also introduces the related operation of file seals:
irrevocably preventing types of modifications to a file.  Unfortunately,
the most useful one, `F_SEAL_WRITE`, can't be relied on; see the large
comment in `SharedMemory:ReadOnlyCopy` for details.  So we still use
the applicable seals as defense in depth, but read-only copies are
implemented on Linux by using procfs (and see the comments on the
`ReadOnlyCopy` function in `shared_memory_posix.cc` for the subtleties
there).

There's also a FreeBSD implementation, using `cap_rights_limit` for
read-only copies, if the build host is new enough to have the
`memfd_create` function.

Differential Revision: https://phabricator.services.mozilla.com/D90605
2020-10-08 02:25:20 +00:00
Mike Hommey cd3a2d5a79 Bug 1669633 - Remove MOZ_BUILD_ROOT. r=firefox-build-system-reviewers,andi,rstewart
It is only really used in js/src/devtools/rootAnalysis/Makefile.in,
and even there, the way it is used seems wrong, so fix that at the
same time (binaries have been linked into $DIST/bin directly for a
while).

Differential Revision: https://phabricator.services.mozilla.com/D92721
2020-10-07 17:57:38 +00:00
Mike Hommey 228e721068 Bug 1669442 - Fix dependency between libxul and mozgtk after bug 1573566. r=andi,dmajor
Bug 1573566 moved libxul from toolkit/library to toolkit/library/build,
and that should be reflected in config/recurse.mk.

It's amazing the race condition hasn't caused problems earlier than now.

Differential Revision: https://phabricator.services.mozilla.com/D92708
2020-10-07 12:17:56 +00:00
Razvan Maries 75a5750a87 Backed out 5 changesets (bug 1662564, bug 1664922, bug 1440203) for Valgrind bustages. CLOSED TREE
Backed out changeset 9366b15ee97c (bug 1440203)
Backed out changeset bb512f5fdeda (bug 1440203)
Backed out changeset be90d6aec690 (bug 1664922)
Backed out changeset f6527a1d0f14 (bug 1662564)
Backed out changeset 3a2941fa7d4b (bug 1662564)
2020-10-07 08:38:13 +03:00
Jed Davis c4968e6653 Bug 1440203 - Support memfd_create in IPC shared memory. r=glandium
This commit also allows `memfd_create` in the seccomp-bpf policy for all
process types.

`memfd_create` is an API added in Linux 3.17 (and adopted by FreeBSD
for the upcoming version 13) for creating anonymous shared memory
not connected to any filesystem.  Supporting it means that sandboxed
child processes on Linux can create shared memory directly instead of
messaging a broker, which is unavoidably slower, and it should avoid
the problems we'd been seeing with overly small `/dev/shm` in container
environments (which were causing serious problems for using Firefox for
automated testing of frontend projects).

`memfd_create` also introduces the related operation of file seals:
irrevocably preventing types of modifications to a file.  Unfortunately,
the most useful one, `F_SEAL_WRITE`, can't be relied on; see the large
comment in `SharedMemory:ReadOnlyCopy` for details.  So we still use
the applicable seals as defense in depth, but read-only copies are
implemented on Linux by using procfs (and see the comments on the
`ReadOnlyCopy` function in `shared_memory_posix.cc` for the subtleties
there).

There's also a FreeBSD implementation, using `cap_rights_limit` for
read-only copies, if the build host is new enough to have the
`memfd_create` function.

Differential Revision: https://phabricator.services.mozilla.com/D90605
2020-10-06 19:20:29 +00:00
Christian Holler 0215dcbfc4 Bug 1659392 - Only enable rust fuzzing code with libFuzzer. r=truber
Differential Revision: https://phabricator.services.mozilla.com/D87228
2020-08-18 13:32:15 +00:00
Mozilla Releng Treescript 5aa7b6ef9e Update configs. IGNORE BROKEN CHANGESETS CLOSED TREE NO BUG a=release ba=release 2020-09-21 14:12:25 +00:00
Nico Grunbaum b6b3c20d6f Bug 1654189 - Move sipcc SDP to third_party;r=dminor
Differential Revision: https://phabricator.services.mozilla.com/D89943
2020-09-11 20:19:42 +00:00
Mike Hommey 8d261dbd4e Bug 1663850 - Remove unused variables in config/config.mk. r=firefox-build-system-reviewers,rstewart
Differential Revision: https://phabricator.services.mozilla.com/D89551
2020-09-09 23:50:38 +00:00
Mike Hommey a34742d98f Bug 1620133 - Allow generated file rules to run in parallel in a given directory. r=firefox-build-system-reviewers,rstewart
Bug 1645986 solved the problem for most generated files by moving their
rules to the top-level, but we're going to add rules that will end up in
subdirectories, so we have to solve the same problem again, in the
subdirectories.

Differential Revision: https://phabricator.services.mozilla.com/D88389
2020-08-28 01:58:48 +00:00
Cosmin Sabou 3dbaa1483b Merge mozilla-central to autoland. CLOSED TREE 2020-08-25 01:10:32 +03:00
Mozilla Releng Treescript ccbc59dff5 Update configs. IGNORE BROKEN CHANGESETS CLOSED TREE NO BUG a=release ba=release 2020-08-24 14:18:41 +00:00
Nathan Froyd 527a3cabb9 Bug 1660828 - move `HAVE_AS_X86_64_UNWIND_SECTION_TYPE` to be x86-64 Unix-specific; r=firefox-build-system-reviewers,rstewart
Somehow we have had it be a general define, but it has not mattered...at
least it won't matter until we upgrade to clang 11, at which point the
compiler will start to complain at us about the codepaths this define
activates.

Differential Revision: https://phabricator.services.mozilla.com/D88056
2020-08-24 19:31:43 +00:00
Mike Hommey ff764980c5 Bug 1659066 - Move base C/C++ compiler flags for cc-rs to CFLAGS_*/CXXFLAGS_. r=firefox-build-system-reviewers,rstewart
Differential Revision: https://phabricator.services.mozilla.com/D87051
2020-08-22 22:46:12 +00:00
Razvan Maries 60aa2d1349 Backed out 3 changesets (bug 1659066) for build bustages. CLOSED TREE
Backed out changeset e8fdf9f3a551 (bug 1659066)
Backed out changeset 0d9c38d87d51 (bug 1659066)
Backed out changeset bdecbe65a90e (bug 1659066)
2020-08-23 01:39:26 +03:00
Mike Hommey c47d050d59 Bug 1659066 - Move base C/C++ compiler flags for cc-rs to CFLAGS_*/CXXFLAGS_. r=firefox-build-system-reviewers,rstewart
Differential Revision: https://phabricator.services.mozilla.com/D87051
2020-08-21 20:18:22 +00:00
Mike Hommey 81f76824b7 Bug 1659906 - Upgrade libffi to version 3.3. r=froydnj
All the patches previously applied, except the one from bug 1279096,
are either irrelevant (as pertaining to changes to the upstream build
system we don't use anymore), were applied upstream, or the issue they
fixed were fixed differently upstream.

Two additional patches, sent upstream as
https://github.com/libffi/libffi/pull/579 and
https://github.com/libffi/libffi/pull/580, are needed to fix our build
with, respectively, mingw-clang and GCC.

Our build system is adjusted according to upstream's configure.ac
and configure.host.

Differential Revision: https://phabricator.services.mozilla.com/D87824
2020-08-22 22:02:22 +00:00
Bogdan Tara 50dacc36d7 Backed out 2 changesets (bug 1659906) for asan failures CLOSED TREE
Backed out changeset 40edcd06d482 (bug 1659906)
Backed out changeset 08a1c02d93e4 (bug 1659906)
2020-08-22 09:26:23 +03:00
Mike Hommey d27ed90b47 Bug 1659906 - Upgrade libffi to version 3.3. r=froydnj
All the patches previously applied, except the one from bug 1279096,
are either irrelevant (as pertaining to changes to the upstream build
system we don't use anymore), were applied upstream, or the issue they
fixed were fixed differently upstream.

Two additional patches, sent upstream as
https://github.com/libffi/libffi/pull/579 and
https://github.com/libffi/libffi/pull/580, are needed to fix our build
with, respectively, mingw-clang and GCC.

Our build system is adjusted according to upstream's configure.ac
and configure.host.

Differential Revision: https://phabricator.services.mozilla.com/D87824
2020-08-21 21:54:32 +00:00
Ricky Stewart 9719a9a5a9 Bug 1636797 - In `hash.py`, enumerate files from the VCS rather than searching the filesystem directly r=ahal
This resolves a long-standing issue in development where `mach artifact` (and therefore `mach bootstrap`) would fail unpredictably if you had dirty, but ignored, files in your checkout. Resolving this problem often required unwieldy `hg purge`/`git ignore` incantations that are easy to get wrong.

This patch addresses the problem by doing what we "should" have been doing all along, and consulting the VCS to list tracked files rather than listing EVERY file on disk and applying heuristics to determine whether they should be included in the hash.

Differential Revision: https://phabricator.services.mozilla.com/D86780
2020-08-17 15:19:34 +00:00
Mike Hommey 4661c85ec0 Bug 1657863 - Skip adding manifests automatically on mingw builds. r=froydnj
This wasn't happening before bug 1656141 and apparently causes problems.
So until we can sort them out...

Differential Revision: https://phabricator.services.mozilla.com/D86638
2020-08-11 13:42:24 +00:00
Mike Hommey 748bff0a39 Bug 1658434 - Replace replace_malloc.mk with a mozbuild file. r=nalexander
Differential Revision: https://phabricator.services.mozilla.com/D86639
2020-08-11 00:05:38 +00:00
Mike Hommey 527e667296 Bug 1537703 - Use llvm-rc instead of rc.exe. r=mhentges,froydnj
This makes us use one less tool from MSVC, and removes one more use of wine
in cross builds.

We replace the call to either rc/llvm-rc or windres with a wrapper script.
While the script is not strictly needed for the latter, we use a wrapper
in that case anyway because it's one step towards fixing bug 1498414.
For llvm-rc, however, we need a wrapper because llvm-rc doesn't preprocess
on its own, so the wrapper does that too.

The wrapper script also allows to deal with the default flags passed to
llvm-rc or windres, rather than inherit them from old-configure.

We also need to explicitly pass the codepage to llvm-rc, which was not
necessary with rc (presumably, llvm-rc has a different default).

While here, remove the unused WINDRES subst from js/src/old-configure.in.
Also, while here, we remove --use-temp-file, because as described in the
linked bug and in the windres manual page, it was used to work around bugs
on Windows 98 and earlier.

Differential Revision: https://phabricator.services.mozilla.com/D86312
2020-08-08 21:02:04 +00:00
Mike Hommey cb9be65521 Bug 1656141 - Stop using MT to insert manifests in binaries. r=firefox-build-system-reviewers,rstewart
We are currently relying on two different ways to insert side-by-side
manifests in binaries on Windows: through resource files, or through
the use of MT. The latter is not supported on mingw builds, which is
not great.

Link.exe has options to add a manifest at link time without relying on
either method above, but that's not supported on mingw either.

So the best we can do is to move everything to using resource files.
This also avoids using MT, which, on cross builds, requires using wine.

Ideally, the manifests would be declared in moz.build, but that
complicates things for cases like TestDllInterceptor, where there are
multiple binaries in the same directory, but only one of them needs the
manifest. This keeps the status quo of getting the manifest
automatically from the source directory.

Differential Revision: https://phabricator.services.mozilla.com/D85382
2020-08-07 00:55:16 +00:00
Mike Hommey e26b1ff8ab Bug 1656141 - Remove support for manifests on host programs. r=firefox-build-system-reviewers,rstewart
We're currently not using the feature, and host programs ought only
to be used during the build, so I don't expect the feature to ever
be necessary.

Differential Revision: https://phabricator.services.mozilla.com/D86167
2020-08-06 22:51:49 +00:00
Mike Hommey 5919ab86af Bug 1656141 - Create res and rc files based on the name of the binary they are linked into. r=firefox-build-system-reviewers,rstewart
This will allow creating separate res files for e.g. SIMPLE_PROGRAMS.

Differential Revision: https://phabricator.services.mozilla.com/D86155
2020-08-07 00:50:50 +00:00
Mike Hommey 5a5a1edd0e Bug 1656141 - Remove RESFILE. r=firefox-build-system-reviewers,rstewart
The resource file is always generated so being able to configure its name
is not useful. On the other hand, the way things are currently implemented,
the lack of RESFILE also makes RCFILE ignored, which we fix at the same
time.

And remove a spurious RESFILE in widget/windows/moz.build, where no binary
is produced, which means RESFILE had no meaning.

Differential Revision: https://phabricator.services.mozilla.com/D86154
2020-08-06 22:51:59 +00:00
Mike Hommey 22179736a6 Bug 1656141 - Rename version_win.py to create_rc.py. r=firefox-build-system-reviewers,mhentges,rstewart
Because while the original perl script was added to add version info
to Windows binaries, it does more and will do even more with upcoming
changes.

Differential Revision: https://phabricator.services.mozilla.com/D86153
2020-08-06 22:52:01 +00:00
Mike Hommey ee6a08868d Bug 1656141 - Remove EMBED_MANIFEST_AT. r=froydnj
It was only ever set to the same value as its default, except in
comm-central, where it is unset, but in directories that now don't link
anything (they did back when binary components were a thing).

Differential Revision: https://phabricator.services.mozilla.com/D85381
2020-08-06 22:52:08 +00:00
Mihai Alexandru Michis c4e805857f Backed out 9 changesets (bug 1656141) for causing multiple failures.
CLOSED TREE

Backed out changeset 9033b0400339 (bug 1656141)
Backed out changeset e43dd57dc61a (bug 1656141)
Backed out changeset eb450457a9b7 (bug 1656141)
Backed out changeset 194a994cf9c9 (bug 1656141)
Backed out changeset ce6831acb5e3 (bug 1656141)
Backed out changeset 29653ea85d49 (bug 1656141)
Backed out changeset 704f28486bda (bug 1656141)
Backed out changeset de8899453150 (bug 1656141)
Backed out changeset 4b133eda46aa (bug 1656141)
2020-08-07 01:48:45 +03:00
Mike Hommey dc4ee999b0 Bug 1656141 - Stop using MT to insert manifests in binaries. r=firefox-build-system-reviewers,rstewart
We are currently relying on two different ways to insert side-by-side
manifests in binaries on Windows: through resource files, or through
the use of MT. The latter is not supported on mingw builds, which is
not great.

Link.exe has options to add a manifest at link time without relying on
either method above, but that's not supported on mingw either.

So the best we can do is to move everything to using resource files.
This also avoids using MT, which, on cross builds, requires using wine.

Ideally, the manifests would be declared in moz.build, but that
complicates things for cases like TestDllInterceptor, where there are
multiple binaries in the same directory, but only one of them needs the
manifest. This keeps the status quo of getting the manifest
automatically from the source directory.

Differential Revision: https://phabricator.services.mozilla.com/D85382
2020-08-06 16:00:40 +00:00
Mike Hommey b8f0039ca8 Bug 1656141 - Remove support for manifests on host programs. r=firefox-build-system-reviewers,rstewart
We're currently not using the feature, and host programs ought only
to be used during the build, so I don't expect the feature to ever
be necessary.

Differential Revision: https://phabricator.services.mozilla.com/D86167
2020-08-06 15:52:47 +00:00
Mike Hommey 63984026bb Bug 1656141 - Create res and rc files based on the name of the binary they are linked into. r=firefox-build-system-reviewers,rstewart
This will allow creating separate res files for e.g. SIMPLE_PROGRAMS.

Differential Revision: https://phabricator.services.mozilla.com/D86155
2020-08-06 15:57:42 +00:00
Mike Hommey afe0ac845a Bug 1656141 - Remove RESFILE. r=firefox-build-system-reviewers,rstewart
The resource file is always generated so being able to configure its name
is not useful. On the other hand, the way things are currently implemented,
the lack of RESFILE also makes RCFILE ignored, which we fix at the same
time.

And remove a spurious RESFILE in widget/windows/moz.build, where no binary
is produced, which means RESFILE had no meaning.

Differential Revision: https://phabricator.services.mozilla.com/D86154
2020-08-06 15:59:02 +00:00
Mike Hommey d6565296c3 Bug 1656141 - Rename version_win.py to create_rc.py. r=firefox-build-system-reviewers,mhentges,rstewart
Because while the original perl script was added to add version info
to Windows binaries, it does more and will do even more with upcoming
changes.

Differential Revision: https://phabricator.services.mozilla.com/D86153
2020-08-06 15:59:09 +00:00
Mike Hommey afec638391 Bug 1656141 - Remove EMBED_MANIFEST_AT. r=froydnj
It was only ever set to the same value as its default, except in
comm-central, where it is unset, but in directories that now don't link
anything (they did back when binary components were a thing).

Differential Revision: https://phabricator.services.mozilla.com/D85381
2020-08-06 07:05:36 +00:00
Mike Hommey 53979f7c8a Bug 1657420 - Use single quotes instead of double quotes for the version_win.py command. r=dmajor
On Windows, with the double quotes, the command goes through the msys
shell, which then alters the command line such that empty arguments are
transformed into \ when they reach python.

With the single quotes, make invokes the command directly, without going
through the msys shell, and empty arguments are preserved.

Differential Revision: https://phabricator.services.mozilla.com/D86097
2020-08-05 22:48:45 +00:00
Mike Hommey cd31cb1f77 Bug 1116553 - Rewrite version_win.pl in Python. r=firefox-build-system-reviewers,rstewart
This is not a feature-for-feature rewrite. The python version removes
unused things, and simplifies some others:

- Only two command line arguments are taken in, and all the others are
  dropped and the corresponding values are gotten from the buildconfig
  module instead. The command line arguments are also taken as
  positional arguments rather than going with a full argument parser.

- Variable expansion in module.ver used to be limited to one specific
  variable to expand for a given value, which is now replaced with the
  possibility to expand any of the variables that are allowed in
  module.ver.

- The perl version was adding a RT_MANIFEST entry on its own if a
  manifest file existed in the objdir for the given binary, but if such
  a file existed, the build would fail after linking from the changes in
  bug 1613799.

- The perl version was defaulting the module name to the binary name in
  a branch that was never taken because the module name was assigned to
  an empty string before that.

The output from the new script has been validated to being identical to
the output from the perl script, except for one extra whitespace at the
end of a comment.

Differential Revision: https://phabricator.services.mozilla.com/D85817
2020-08-04 22:21:01 +00:00
Nathan Froyd 623f837bed Bug 1655929 - run `cargo update` and `mach vendor rust` for rlbox + lucet updates; r=firefox-build-system-reviewers,rstewart
As the commit title suggests, this is a manual update, but we need to also
update `config/rules.mk` for the changed location of the wasi bindings.

Depends on D85408

Differential Revision: https://phabricator.services.mozilla.com/D85409
2020-07-30 15:54:20 +00:00
Jeff Walden 1de5dca426 Bug 1654927 - Move js.msg and js::GetErrorMessage into a new js/public/friend directory so users of them don't have to depend on all of jsfriendapi.h. r=mgaudet
Differential Revision: https://phabricator.services.mozilla.com/D84756
2020-07-29 04:44:50 +00:00
Mike Hommey 2e54d6bcc3 Bug 1655583 - Don't close fds in run-and-prefix.py. r=firefox-build-system-reviewers,rstewart
run-and-prefix.py is used as a wrapper of MAKE in moz-automation.mk, so
that the output is more clearly attributed to what part of the build is
happening, for everything that is post-build (e.g. package, upload,
etc.)

Ever since the switch to python 3, when it re-invokes MAKE, the
jobserver file descriptors would be closed and the sub-make wouldn't be
able to use it.

Differential Revision: https://phabricator.services.mozilla.com/D85051
2020-07-27 21:51:13 +00:00
Mike Hommey 2a4eb30ed4 Bug 1654465 - Set -Cembed-bitcode=yes instead of CARGO_PROFILE_RELEASE_LTO. r=firefox-build-system-reviewers,rstewart
It turns out setting CARGO_PROFILE_RELEASE_LTO has unwanted side
effects.

First it's not actually strictly equivalent to using `cargo rustc --
-Clto`. For instance, it apparently also enables cross-language LTO in
newer versions of cargo.

Second, it changes the rust computed hash for all the dependencies of
the crate being built with the variable set, which makes them diverge
from when the same dependencies are built through another crate in the
tree that is not LTOed. This effectively makes us build a _lot_ of
crates twice, many of which are not cacheable.

Since the original problem is that cargo >= 1.45 passes extra flags (`-C
embed-bitcode=no`) to rustc that are incompatible with `-Clto`, and while
it knows to adjust based on the `lto` setting in the build profile
(which CARGO_PROFILE_RELEASE_LTO overrides the default of), cargo
ignores flags passed via `cargo rustc -- ...` when making those
adjustments.

So, we need to override with `-C embed-bitcode=yes` on our own at the
same time we pass `-Clto`. But doing that through `cargo rustc -- ...`
is not enough because all the dependencies of the crate built with
`-Clto` need to be built with `-C embed-bitcode=yes`. So we need to
override with `RUSTFLAGS`, which will affect all the dependencies.
But we also need to do this consistently across all crates, not only the
dependencies of crates built with `-Clto`, otherwise we'd still end up
building crates twice (once with and once without the override).

Unfortunately, the `-C embed-bitcode=*` flag is also not supported in
versions older than 1.45, so we have to avoid adding it on older
versions.

We unfortunately support a large range of versions of rustc (albeit only
for tools/crashreporter), but we actually need to upgrade the smaller
supported version because rustc < 1.38 doesn't support our top-level
Cargo.lock. This makes the version check slightly less awful.

Differential Revision: https://phabricator.services.mozilla.com/D84652
2020-07-27 21:23:57 +00:00