lang/rust: Simplify makesum and MASTER_SITES

lang/rust-nightly: Update to 1.42.0.20200118

lang/rust: Add COMPAT_FREEBSD11 canary

This attempts to provide a nicer error message for the subset of
users who build their own kernels without COMPAT_FREEBSD11 and then
attempt to build lang/rust.  The Rust ecosystem currently uses
pre-ino64 syscalls, so building lang/rust without COMPAT_FREEBSD11
is not going to work.

The error message for this is non-obvious and there is a new bug
for this at least every 1-2 months.  Hopefully this will improve
the situation a little.

Cargo and Gecko ports are similarly affected, so add the pre-build
check to them too.

Reviewed by:	jbeich, mikael.urankar@gmail.com
Tested by:	madpilot (negative case)
Approved by:	gecko (jbeich)
Differential Revision:	https://reviews.freebsd.org/D23100

lang/rust: increase build verbosity and produce better build logs

lang/rust: fix powerpc64 elfv2 bootstrap

Apparently there were some issues with the previous one.

PR:		243253
Submitted by:	mikael.urankar@gmail.com
Reported by:	jhibbits, pkubaj
Tested by:	pkubaj

lang/rust: Simplify do-configure and garbage collect files/config.toml

lang/rust: Update to 1.40.0

- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/12/19/Rust-1.40.0.html
Tested by:	mikael.urankar@gmail.com, tobik
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D22843

lang/rust: Respect ONLY_FOR_ARCHS in makesum

lang/rust-nightly does not have powerpc64 in it and unconditionally
running makesum for the powerpc64 ELFv2 bootstraps breaks there.

PR:		242342
Reported by:	jbeich

lang/rust: Remove PPC_ABI kludge after r518658

lang/rust, Mk/Uses/cargo.mk: Drop gmake build dependency for backtrace-sys

The backtrace-sys crate no longer needs gmake since 0.1.20.
sysutils/flowgger still uses backtrace-sys-0.1.14.  Since it is the
only USES=cargo port left that needs it, move the gmake dependency
directly to it instead.

lang/rust currently has backtrace-sys-0.1.30.  It also vendors
jemalloc-sys (which also needs gmake to build) but it is hidden
behind rustc's jemalloc feature which we do not currently activate.
It should be safe to remove gmake in lang/rust too.

PR:		242267
Reported by:	mikael.urankar@gmail.com

lang/rust: Add missing bits for powerpc64 ELFv2 support via PPC_ABI

Submitted by:	Mikael Urankar <mikael.urankar@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D20792

lang/rust{,-nightly}: switch to .tar.xz bootstraps

Decreases total size by ~325 MiB in lang/rust.

Approved by:	tobik (rust)
Differential Revision:	https://reviews.freebsd.org/D22422

lang/rust: Update to 1.39.0

- Force rebuild all consumers to catch regressions early
- Partially apply D20792 in preparation for PPC_ABI support
- Add LibreSSL 3.0.x support [1]

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/11/07/Rust-1.39.0.html
PR:		241411 [1]
Tested by:	mikael.urankar@gmail.com, tobik
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D22240

- Add compat for NOCCACHE -> NO_CCACHE

- Add a CCACHE_BIN variable for simplified use where needed.

lang/rust: Update to 1.38.0

- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/09/26/Rust-1.38.0.html
Tested by:	jbeich, mikael.urankar@gmail.com, tobik
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D21778

lang/rust: Drop unused/unmaintained package-to-bootstraps and related targets

Reviewed by:	mikael.urankar@gmail.com
Differential Revision:	https://reviews.freebsd.org/D21690

lang/rust: Cleanup part 4

- Spell LICENSE_FILE_APACHE20 correctly
- Move gmake to BUILD_DEPENDS directly.  gmake is called during the
  build by some crates but is not the primary build tool.
- Move variables around to be more in line with the recommendations
  in the Porter's Handbook
- Mark port local non-overridable variables as "private"
- Reduce noise of RUST_ARCH_*: only keep the overrides when they
  differ from ${ARCH}
- Drop unused RUST_TARGET plist sub
- Move post-configure-DOCS-* into do-configure

lang/rust: Unbreak on armv6

error: couldn't load codegen backend
"/usr/ports/lang/rust/work/rustc-1.37.0-src/build/armv6-unknown-freebsd/stage1/lib/rustlib/armv6-unknown-freebsd/codegen-backends/librustc_codegen_llvm-llvm.so":
"/usr/ports/lang/rust/work/rustc-1.37.0-src/build/armv6-unknown-freebsd/stage1/lib/rustlib/armv6-unknown-freebsd/codegen-backends/librustc_codegen_llvm-llvm.so:
Undefined symbol \"__clear_cache\""

__clear_cache is implemented in compiler-rt and was dropped upstream with [1]:
https://github.com/rust-lang-nursery/compiler-builtins/commit/aa41e0d25fcb2b11b9b5c269846dd70547f2a787

For some unknown reason this is a problem on armv6.  Bring back the
compiler-rt submodule for now to workaround this.

Submitted by:	 mikael.urankar_gmail.com
Differential Revision:	https://reviews.freebsd.org/D21415

lang/rust: Update to 1.37.0

- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/08/15/Rust-1.37.0.html
Tested by:	jbeich, tobik, greg@unrelenting.technology (aarch64)
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D21247

NOCCACHE also disables setting CCACHE_WRAPPER_PATH which can break the build.

Bump PORTREVISION for ports depending on the canonical version of GCC
as defined in Mk/bsd.default-versions.mk which has moved from GCC 8.3
to GCC 9.1 under most circumstances now after revision 507371.

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
   c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, everything INDEX-11 shows with a dependency on lang/gcc9 now.

PR:		238330

lang/rust: Clean up more things

- Drop pre-install target: `make restage` should be run after a
  failed `make stage` to wipe out and repopulate the staging
  directory.  No need to hack around this.
- Drop RUST_MANIFESTS, it is only one value after r490852 and now
  only used once in post-install.
- Drop RUST_CHANNEL.  It is only used in do-configure.
- Drop LLNEXTGEN option.  There are no references to LLNextgen in
  the Rust sources, so it appears to not be used for anything
  anymore.

lang/rust: Drop {pre,post}-configure targets

They are no longer necessary since r487977 when we disabled vendor
checksums.

lang/rust: Clean up bootstrap handling

Fix handling of BOOTSTRAPS_SUFFIX.  On powerpc64 the -elfv1 suffix
needs to be stripped from the bootstraps since Rust expects them
without it.

PR:		239158
Reported by:	pkubaj

lang/rust: Update to 1.36.0

- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/07/04/Rust-1.36.0.html
Tested by:	jbeich, mikael.urankar@gmail.com
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D20810

lang/rust: Overwrite makesum target instead of makesum-all-archs

One less thing to remember during updates.

lang/rust*: Add link to upstream issue for the LLVM STAGEDIR bug

lang/rust: Clean up MASTER_SITES

Use HTTPS consistently and remove old sites that only contain
Rust < 1.27.0 bootstraps.

lang/rust: Update to 1.35.0

- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/05/23/Rust-1.35.0.html
Reviewed by:	jbeich
Tested by:	pkubaj (powerpc64), mikael.urankar@gmail.com (aarch64)
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D20332

lang/rust: Update to 1.34.2

- While here add patches from [1] for LibreSSL 2.9.1 support

[1] https://github.com/sfackler/rust-openssl/pull/1097

Changes:	https://blog.rust-lang.org/2019/05/13/Security-advisory.html
Changes:	https://blog.rust-lang.org/2019/05/14/Rust-1.34.2.html
PR:		237495 [1]
Security:	37528379-76a8-11e9-a4fd-00012e582166

lang/rust: Update to 1.34.1

- Add stdsimd patches from D19940 to attempt to unbreak powerpc64, armv{6,7} [1]

Changes:	https://blog.rust-lang.org/2019/04/25/Rust-1.34.1.html
PR:		237507 [1]
Submitted by:	mikael.urankar@gmail.com [1]
Reviewed by:	jbeich [1]
Tested by:	pkubaj (stdsimd patches with 1.34.0 on powerpc64) [1]
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D19940 [1]

lang/rust: Update to 1.34.0

- Update devel/racer to latest version that can build with 1.34.0
- Drop no longer needed patch from textproc/ripgrep
- Force rebuild all consumers to catch regressions early

Thanks to Mikael Urankar for providing updated bootstraps for
aarch64, armv6, armv7, powerpc64.

Changes:	https://blog.rust-lang.org/2019/04/11/Rust-1.34.0.html
Reviewed by:	jbeich
With hat:	rust
Differential Revision:	https://reviews.freebsd.org/D19850

Bump revision to make sure port is build against new libgit2 version 0.28.1.

PR:		236801
Reported by:	jbeich

lang/rust: update to 1.33.0

- www/firefox temporarily loses SIMD in charset conversion, see
  https://bugzilla.mozilla.org/show_bug.cgi?id=1521249
- Force rebuild all consumers to catch regressions early

Changes:	https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html
Tested by:	Mikael Urankar (aarch64, armv6, armv7, powerpc64), Piotr Kubaj
(powerpc64)
Approved by:	rust (tobik)
Differential Revision:	https://reviews.freebsd.org/D19354

lang/rust: Attempt to fix build on powerpc64

Add change forgotten in r493268.

Pointy hat:	tobik

lang/rust: Ignore with qemu-user-static and on aarch64 without fixed ld-elf.so.1

- Rust will not run without a fixed ld-elf.so.1 on aarch64
- Builds with qemu-user-static currently hang after a while

PR:		221185
Submitted by:	Mikael Urankar <mikael.urankar@gmail.com>

lang/rust: Add aarch64, armv{6,7}, and powerpc64 bootstraps

PR:		216143, 228892
Submitted by:	Mikael Urankar <mikael.urankar@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D18367

lang/rust: don't hardcode manifest files after r489132

Approved by:	rust (tobik)
Differential Revision:	https://reviews.freebsd.org/D18737

lang/rust: oops, don't default to pre-releases

Differential Revision:	https://reviews.freebsd.org/D18858

lang/rust: rename patches to match diff prefix

Git even with -M -C -C couldn't detect all renames in modified files,
so rename in a separate commit.

Approved by:	rust (tobik)
Differential Revision:	https://reviews.freebsd.org/D18858

lang/rust: update to 1.32.0

- devel/racer no longer needs to dowgrade rustc-ap-syntax
- Force rebuild all consumers to catch regressions early

Changes:	https://blog.rust-lang.org/2019/01/17/Rust-1.32.0.html
Approved by:	rust (tobik)
Differential Revision:	https://reviews.freebsd.org/D18858

lang/rust: Use ECHO_CMD not ECHO as per bsd.commands.mk

lang/rust: disclaim /proc fix

lang/rust: Update to 1.31.1

- Simplify .cargo-checksum.json handling [1].  Similar to USES=cargo
  we disable vendor checksum checking by clearing the list of files
  in all .cargo-checksum.json, so that cargo does not complain when
  we patch something.  The overall distfile is already checked by
  us which should be enough.
- Add an overridable CARGO_VENDOR_DIR variable to set the crate
  vendor directory which has moved location in nightly
- Add upstream openssl-sys patch to fix build with LibreSSL 2.9.0 [2]

Changes:	https://blog.rust-lang.org/2018/12/20/Rust-1.31.1.html
Submitted by:	mikael.urankar@gmail.com [1], ml@vishwin.info [2]
Differential Revision:	https://reviews.freebsd.org/D18610

lang/rust: drop unused conflicts after r446815

lang/rust-nightly: update to 1.32.0.20181214

lang/rust: update to 1.31.0

- devel/racer no longer needs to dowgrade rustc-ap-syntax
- Force rebuild all consumers to catch regressions early

Changes:	https://blog.rust-lang.org/2018/12/06/Rust-1.31.0.html
Approved by:	rust (tobik)
Differential Revision:	https://reviews.freebsd.org/D18427

- Specify LICENSE_FILEs uniformly

Approved by:	portmgr blanket

lang/rust: Update to 1.30.1

Release notes:
* https://blog.rust-lang.org/2018/11/08/Rust-1.30.1.html

lang/rust: update to 1.30.0

- Force rebuild all consumers to catch regressions early

Changes:	https://blog.rust-lang.org/2018/10/25/Rust-1.30.0.html
Approved by:	rust (tobik)
MFH:		2018Q4 (less rust versions to support)
Differential Revision:	https://reviews.freebsd.org/D17695

lang/rust: update to 1.29.2

- Force rebuild all consumers in case some are affected by miscompilation

Changes:	https://blog.rust-lang.org/2018/10/12/Rust-1.29.2.html
PR:		229826 (follow up)
Approved by:	rust (tobik)
MFH:		2018Q4
Differential Revision:	https://reviews.freebsd.org/D17477

lang/rust: Add patches to support LibreSSL 2.8.1

PR:		230470
Reported by:	Charlie Li <ml+freebsd@vishwin.info>

lang/rust: update to 1.29.1

- Force rebuild all consumers as standard library is statically linked

Changes:	https://blog.rust-lang.org/2018/09/25/Rust-1.29.1.html
PR:		229826 (follow up)
Approved by:	dumbbell
Differential Revision:	https://reviews.freebsd.org/D17337

lang/rust: sort LIB_DEPENDS by library name instead of origin

Requested by:	dumbbell (maintainer)

lang/rust: unbundle libgit2/libssh2

- libgit2 in ports is nowadays newer than bundled version
- libssh2 was already unbundled until 1.29.0 update
- Unbundle libssh2 for USES=cargo (unused atm)

PR:		231411
Approved by:	rust (dumbbell, tobik)

lang/rust: unbreak if ssl != base

  [ 13%] Building C object src/CMakeFiles/libssh2.dir/channel.c.o
  /usr/bin/cc -DLIBSSH2_CLEAR_MEMORY -DLIBSSH2_DH_GEX_NEW=1
-DLIBSSH2_HAVE_ZLIB=1 -DLIBSSH2_OPENSSL -I/usr/local/include
-Isrc/vendor/libssh2-sys/libssh2/include
-Ibuild/x86_64-unknown-freebsd/stage2-tools/x86_64-unknown-freebsd/release/build/libssh2-sys-149db94635ec1367/out/build/src
 -ffunction-sections -fdata-sections -fPIC -ffunction-sections -fdata-sections
-fPIC -m64 -m64 -O3 -DNDEBUG   -std=gnu90 -o CMakeFiles/libssh2.dir/channel.c.o 
 -c src/vendor/libssh2-sys/libssh2/src/channel.c
  src/vendor/libssh2-sys/libssh2/src/channel.c:2262:44: error: use of undeclared
identifier 'LIBSSH2_ERROR_CHANNEL_WINDOW_FULL'
	      return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_WINDOW_FULL,
					     ^

PR:		231411
Reported by:	many
Obtained from:	upstream (libssh2)
Approved by:	portmgr blanket

lang/rust: Update to 1.29.0

Release notes:
* https://blog.rust-lang.org/2018/07/20/Rust-1.27.2.html
* https://blog.rust-lang.org/2018/08/02/Rust-1.28.html
* https://blog.rust-lang.org/2018/09/13/Rust-1.29.html

Up to and including Rust 1.27.x, the Rust build system shelled out to
a configure script to detect the presence and usability of libunwind.
Since Rust 1.28.0, it's using a static result in a `build.rs` file and
expects libunwind to be used. It was not the case on FreeBSD so far, so
we need a patch to this `build.rs` to disable that. We still need to
study if the FreeBSD port should use libunwind and what to do with this
patch. But this problem prevented the update to Rust 1.28.0 already, so
enough delay.

Update WWW

Approved by:	portmgr (blanket)

lang/rust: Udpate checksums in libgit2-sys/.cargo-checksum.json

It was part of the initial patch from Charlie Li to support LibreSSL
2.7. However, I misread it and though he was only removing bits
which were not needed anymore (updating checksums for openssl and
openssl-sys).

Now, we update all three: libgit2-sys, openssl and openssl-sys.

PR:		226955
Submitted by:	Charlie Li <ml+freebsd@vishwin.info>
Reported by:	Charlie Li <ml+freebsd@vishwin.info>

lang/rust: Add patches to fix the build with LibreSSL 2.7

PR:		226955
Submitted by:	Charlie Li <ml+freebsd@vishwin.info>

lang/rust: Update to 1.27.1

Release notes:
* https://blog.rust-lang.org/2018/06/21/Rust-1.27.html
* https://blog.rust-lang.org/2018/07/10/Rust-1.27.1.html

Rust is marked as broken on aarch64. The reason is the bootstrap
compiler crashes currently. See PR 228892 which tracks the issue.

A patch for aarch64 is still included. It fixes the sign for unqualified
C char. This patch still needs to be upstream, but for that, the
compiler needs to work again first.

PR:		228892

lang/rust: Update to 1.26.2

Release notes:
* https://blog.rust-lang.org/2018/05/29/Rust-1.26.1.html
* https://blog.rust-lang.org/2018/06/05/Rust-1.26.2.html

lang/rust: Add `make makesum-all-archs` target

It is a helper to ease the generation of the `distinfo` file for all the
architectures we support. It avoids the manual commands.

lang/rust: Update to 1.26.0

The announcement is available on Rust blog:
https://blog.rust-lang.org/2018/05/10/Rust-1.26.html

Rust 1.25.0, used as the bootstrap compiler, contains the patch from
bdrewery@ to use the compat (non-ino64) symbols on FreeBSD 12-CURRENT.
Therefore, we don't need `old_fstat.c` and the associated machinery in
the `Makefile` anymore.

Update to 1.25.0.

- The ABI patch is no longer needed on head due to fixes being upstreamed
  to use the pre-ino64 symbols.  The ABI patch is still needed for the
  bootstrap but should be removable for 1.26.0 if it uses beta 2018-03-18.

PR:		227130 [based on]
Tested by:	dumbbell, Charlie Li
Submitted by:	riggs [based on]
Differential Revision:	https://reviews.freebsd.org/D14921 [based on]

lang/rust: Update to 1.24.1

The announcement is available on Rust blog:
https://blog.rust-lang.org/2018/03/01/Rust-1.24.1.html

There is a compilation error when it builds `clippy-driver` and `miri`
but it apparently doesn't affect the result. There are probably optional
tools/dependencies.

Update rust-nightly to 2018-03-21.

The ABI patch and bootstrap patching are no longer needed on head after
fixes fully upstreamed in https://github.com/rust-lang/rust/issues/42681.

Fix WITH_CCACHE_BUILD when using Poudriere's ccache-memcached support.

- Fix kevent on head by binding to the old ABI symbol version.
- Add some context in the patches for where they came from.  They need to be
  in 1 patch due to needing to use the .orig file for fixing up checksums.

Obtained from:	rust upstream

Support WITH_CCACHE_BUILD for bundled LLVM

Unbreak on i386/amd64 and update to 1.25.0-2018-02-19

- Stop using git to build as it is unmaintainable due to submodules,
  but more importantly because src/vendor is no longer bundled.  Just
  fetch the source already generated that has all dependencies bundled.
  It may be a bit slower to get updates but is far more maintainable.
- Copy all patches to lang/rust-nightly/files since they may not always
  apply exactly between both versions.
- Add in patch for llvm-config getting -lexecinfo wrong, this is in
  review with LLVM at https://reviews.llvm.org/D42702.
- Bring in other random updates from lang/rust.

No need to actually recompress rust-std, libarchive does the right thing

Newer versions (rust-nightly 2018-02-19) pack multiple .o files into
libstd.  We only need to patch one of them.

lang/rust: unbreak on aarch64 after r459911

gmake: Leaving directory
'.../aarch64-unknown-freebsd/release/build/rustc_binaryen-cfb76adb9420e94c/out/build'
--- stderr
c++: error: the clang compiler does not support '-march=native'
c++: error: the clang compiler does not support '-march=native'

PR:		225600
Reported by:	Gergely Czuczy, pkg-fallout
Obtained from:	upstream (binaryen 1.37.35)
Approved by:	portmgr blanket

Use https for fetching bootstrap packages

lang/rust: Update to 1.24.0

The announcement is available on Rust blog:
https://blog.rust-lang.org/2018/02/15/Rust-1.24.html

PR:		225582

lang/rust: Grep `std-$hash.*.o` name from `libstd-*.rlib`

The suffix of that file changed in recent versions of Rust and it's
changing again between Rust 1.23.0 and 1.24.0. So let's grep the
filename from the list of files contained in the ar archive.

lang/rust: Add manifest-rustfmt-preview to PLIST

This wasn't reported by a simple `poudriere bulk`, but a `poudriere
testport` revealed the problem:

    ====> Running Q/A tests (stage-qa)
    Error: 'lib/rustlib/manifest-rustfmt-preview' is referring to
/wrkdirs/usr/ports/lang/rust/work/stage
    Warning: 'bin/rustfmt' is not stripped consider trying
INSTALL_TARGET=install-strip or using ${STRIP_CMD}
    ...
    ===> Checking for items in STAGEDIR missing from pkg-plist
    Error: Orphaned: bin/rustfmt
    Error: Orphaned: lib/rustlib/manifest-rustfmt-preview

PR:		225445
Reported by:	jbeich@

lang/rust: Update to 1.23.0

Firefox 57.0 failed to build with Rust 1.23.0 with the following error:

    error: unused import: `std::ascii::AsciiExt`
      -->
/wrkdirs/usr/ports/www/firefox/work/firefox-57.0.4/servo/components/style/gecko_string_cache/mod.rs:16:5
       |
    16 | use std::ascii::AsciiExt;
       |     ^^^^^^^^^^^^^^^^^^^^
       |
    note: lint level defined here
      -->
/wrkdirs/usr/ports/www/firefox/work/firefox-57.0.4/servo/components/style/lib.rs:26:9
       |
    26 | #![deny(warnings)]
       |         ^^^^^^^^
       = note: #[deny(unused_imports)] implied by #[deny(warnings)]

Now that Firefox is updated to 58.0, the build succeeds.

lang/rust: Skip `.cargo-checksum.json` update when it's missing

Currently we need to update `.cargo-checksum.json` in several patched
crates. But those crates are missing from the sources if they come from
GitHub instead of a proper released source archive. This change makes
`post-patch` and `do-configure` recipes fine in both cases.

lang/rust: Always replace bootstrap versions in `stage0.txt`

This simplifies the `Makefile`. The condition was fragile anyway because
it was based solely on the Makefile and not the actual content of
`stage0.txt`.

lang/rust: Find libstd's suffix at runtime

... instead of hard-coding all values in the Makefile.

This eases the update of Rust.

lang/rust: Disable "omit frame pointers"

Before the patch, the default behavior of the compiler was to omit frame
pointers. However, even though it looks fine for the code produced
by the compiler, the compiler itself was broken. When there was a
compilation error, rustc panics to report that error. While handling
that panic, it tries to unwind the stack but fails to do so, which
results in an abort(3).

Here is an example:

    $ rustc hello.rs
    error: invalid reference to argument `0` (no arguments given)
     --> hello.rs:2:5
      |

lang/rust: avoid LLVM targeting SSE2 on i386 by default

This may help ports like textproc/ripgrep to run on old hardware.
Rust itself still requires SSE2 until bootstrap is regenerated.

PR:		223415
Approved by:	rust (dumbbell)

lang/rust: Remove the LLVM_PORT option

FTR, this option allowed to used LLVM from ports instead of building the
bundled copy.

The problem is that this combination isn't really tested upstream. This
led to regressions which are difficult to diagnose. For instance, in
Rust 1.21.0, the bundled LLVM provided a new API to query the features
supported by the target arch. The equivalent code inside Rust was
removed to use that new API. Unfortunately, building Rust 1.21.0+ with a
copy of LLVM not providing this API didn't failed but instead made that
list of CPU features empty. This resulted in the following obscure build
failure in Firefox:

    error[E0432]: unresolved import `x86::sse2`

To avoid future pain for both end users and maintainers, we decided to
remove that option. Yes, it will increase the (already long) time to
build Rust, but it should save time wasted on debugging what is not
really supported anyway.

PR:		223342, 223300
Reported by:	Many users

lang/rust: Update to 1.22.1

Support for LibreSSL up-to 2.6.3 is now included, thus we can remove the
patches to the `openssl` and `openssl-sys` crates.

The renewed bootstrap for aarch64 was created on 11.0-RELEASE, instead
of 11.1-STABLE. It should allow it to run on all 11.x and thus fix the
build on 11.0-RELEASE. [1]

PR:		223009 [1]

lang/rust: Add support for LibreSSL 2.6.3

Patches come from upstream:
    https://github.com/sfackler/rust-openssl

PR:		223500
Reported by:	Charlie Li <ml+freebsd-bugs@vishwin.info>

lang/rust: Fix paths in `manifest-rls-preview`

Like other manifests, without this, it still references the stage
directory. This error is reported when DEVELOPER=YES is set.

While here, strip `bin/rls`.

Reported by:	bar@, cpm@

lang/rust: Update to 1.21.0

The official bootstraps wouldn't work: rustc was stalled on a mutex
while compiling a crate early in the build. This was solved by creating
a new bootstraps for "rustc" and "rust-std" from the existing FreeBSD
package. We keep using the official "cargo" bootstrap.

PR:		223123

lang/rust: unbreak FFI for returning struct on i386

As this fixes Stylo on i386, remove the workaround in www/firefox.

PR:		223047
Suggested by:	Sebastien Marie <semarie@openbsd.org>
Approved by:	rust (dumbbell)
MFH:		2017Q4 (required by Firefox 57 scheduled on 2017-11-14)

lang/rust: Add support for LibreSSL 2.6.1 and 2.6.2

Patches come from upstream:
    https://github.com/sfackler/rust-openssl

PR:		222359
Reported by:	Charlie Li <ml+freebsd-bugs@vishwin.info>,
		Piotr Kubaj <pkubaj@anongoth.pl>,
		w.schwarzenfeld@utanet.at,
		nhoyle@hoyletech.com

lang/rust: Update to 1.20.0

This patch only upgrades the port to Rust 1.20.0. The PR also covers a
build failure with the latest LibreSSL, which is not addressed here.

PR:		222359
Reported by:	Charlie Li <ml+freebsd-bugs@vishwin.info>

lang/rust: Install Cargo + use bundled crates

This port now provides Cargo. This is the recommended now because Cargo
won't be provided separately in the future.

To build Cargo, we set `extended = true` in `config.toml`. As a side
effect, this flag also installs Rust source code. The port has a new
`SOURCES` option (disabled by default) to keep those sources.

As a consequence of this, `devel/cargo` is removed. Several ports
and Makefiles in Mk were updated to depend on `lang/rust` instead of
`devel/cargo`.

The other big change in this patch is the use of the bundled crates,
instead of relying on Cargo's registry (which was part of the distfiles,

Allow RUST_BACKTRACE to work without /proc mounted

Submitted by:	jbeich
Differential Revision:	https://reviews.freebsd.org/D11574

lang/rust: Turn off PORT_LLVM by default

This change was accidentally committed with the previous commit.

lang/rust: Fix build with PORT_LLVM

The path to `llvm-config40` was set to the empty string in the generated
`config.toml`, because I was still using the ${LLVM_PREFIX} variable
instead of the appropriate ${LLVM_CONFIG}. Bad completion and lack of
testing, sorry for that...

Reported by:	Rainer Hurling <rhurlin@gwdg.de>,
		Walter Schwarzenfeld <w.schwarzenfeld@utanet.at>,
		dim@

lang/rust: Fix ${PORT_LLVM_BUILD_DEPENDS}

The BUILD_DEPENDS argument for the PORT_LLVM option was not updated: it
was using the ${LLVM_PREFIX} variable which was removed. Now, it uses
${LOCALBASE} and ${LLVM_VER} as a suffix to the executable verified.

Submitted by:	Rainer Hurling <rhurlin@gwdg.de>
Reported by:	Rainer Hurling <rhurlin@gwdg.de>

lang/rust: Update to 1.19.0

The main change in the port is the switch from configure+make to the
`x.py` build script. This is the recommended way of building Rust. It
takes a configuration file, `config.toml`, which, in the port case,
indicates:

 * where to install things;
 * which release channel to use;
 * where to find Python and llvm-config;
 * if documentation should be also built.

The build process should now honor ${MAKE_JOBS_NUMBER} instead of always
using all available CPU cores.

lang/rust: Fix value of ${CARGO_BOOTSTRAP_DIR_aarch64}

It was pointing to the wrong directory.

Reported by:	jbeich@