Enable parallel codegen (2 units) by default when --opt-level is 0 or 1. This
gives a minor speedup on large crates (~10%), with only a tiny slowdown (~2%)
for small ones (which usually build in under a second regardless). The current
default (no parallelization) is used when the user requests optimization
(--opt-level 2 or 3), and when the user has enabled LTO (which is incompatible
with parallel codegen).
This commit also changes the rust build system to use parallel codegen
when appropriate. This means codegen-units=4 for stage0 always, and
also for stage1 and stage2 when configured with --disable-optimize.
(Other settings use codegen-units=1 for stage1 and stage2, to get
maximum performance for release binaries.) The build system also sets
codegen-units=1 for compiletest tests (compiletest does its own
parallelization) and uses the same setting as stage2 for crate tests.
All of these crates have been deprecated for some time and properly live in the
rust-lang organization as cargo-based crates.
To update your code, depend on the rust-lang/foo repository via cargo.
[breaking-change]
When running `sudo make install`, we only want to run the actual install
as root, the building of the documentation and the distribution folder
should happen as the non-root user.
Related to #13728.
----
To reproduce issue on commit ba246100ca
it does not suffice to add just `check-build-compiletest` to
`check-secondary`; one must also ensure that `check-build-compiletest`
precedes the satisification of the `check` rule.
Otherwise hidden dependencies of `compiletest` would end up getting
satisfied when make builds `rustc` at each stage in order to
eventually run `check-stage2`.
So to handle that I moved `check-secondary` before `check` in the
`check-all` rule that bors uses, and for good measure, I also put
`check-build-compiltest` at the front of the `check-secondary` rule's
dependencies.
My understanding is that running `check-secondary` should be
relatively cheap, and thus such a reordering will not hurt bors.
----
Fix#17883.
compiletest needs to link to native crate, or at least the `rt` library.
(I tried using a dependency on `rustrt` instead, and that did not resolve the problem. But this does.)
Partially addresses #17883
The escaped newline in the middle of the variable reference breaks the
short hash substitution, leaving the link text exmpty; rewrap so that
each replacement is on its own line.
The escaped newline in the middle of the variable reference breaks the
short hash substitution, leaving the link text exmpty; rewrap so that
each replacement is on its own line.
Remove superfluous parentheses from the CTAGS_LOCATIONS expression.
Fixes the following error when executing `make TAGS.vi`:
/bin/sh: -c: line 0: syntax error near unexpected token `)'
This commit removes the libuv and gyp submodules, as well as all build
infrastructure related to them.
For more context, see the [runtime removal
RFC](https://github.com/rust-lang/rfcs/pull/230)
[breaking-change]
This commit removes the `librustuv` crate.
See the [runtime removal
RFC](https://github.com/rust-lang/rfcs/pull/230) for more context.
See [green-rs](https://github.com/alexcrichton/green-rs/) for a possible
migration path if you wish to continue using green-threaded I/O. The
library provides its own I/O API surface.
[breaking-change]
This makes the windows `make dist` target start producing binary tarballs, and tweaks install.sh so they work, in preparation for working on a combined Rust+Cargo installer.
Setting LC_ALL to C helps keep gdb's output consistent ('print' gives us expected output). This fixes#17423. I do not have access to a windows/mac machines to test this. I've only tested it on an x86_64 linux box.
Right now, libuv will **always** be built for the host system (at least when building on OSX) because the information about the cross compiler is never actually passed to GYP. I don't know how anybody has been managing to build cross compilers with this.
Note that, at least on OSX, there is a bug in GYP that will send clang flags to non-clang compilers and it will still attempt to use Xcode's libtool, so this doesn't completely fix the problem of cross-compiling on an OSX host, but it's a start.
