This is relatively straight-forward via a pass in the compiler to
collect the resources to embed and then use include_bytes! (once per
resource).
What's really annoying is that the rust resource enum can't store a
&'static [u8] because cbindgen doesn't represent that, probably because
the slice representation isn't guaranteed to stay as it is. So instead
this, for now, uses raw pointers.
By setting RUSTFLAGS in the Cargo config we run into the situation that
when doing a host build, all rust files are compiled with the flags,
including build.rs. When cross-compiling, build.rs is not build with the
RUSTFLAGS specified. That makes kind of sense, but it also means that
all the build scripts are always recompiled when switching between a
target and a host build - and that applies to *all* packages, including
dependencies.
So short of a better solution, this patch removes the need to set
RUSTFLAGS. It was used to extract the system library dependencies for
the static library we'd create. Instead we're now building two shared
libraries and are linking against them. They contain the rust library
twice, so that's not really a desirable final state either, but
productivity wins right now :-)
It might make sense to go back to creating *one* shared library through
a dedicated crate and -- since 'pub extern "C"' functions are not
transitively exported, it may require re-exporting them by hand or using
some clever build trick perhaps.
This is not working because spawning cargo for each tests is too slow,
and cannot even re-use the same target directory because it would block
on the cargo lock file. and rebuild all the dependences because of
different flags
* Remove the dependency to the rust frontend and library from the test
driver. Tests are compiled and run as standalone programs.
* Add diagnostics for the initial cargo run for the dependencies.
Collect all tests are build time in build.rs and generate Rust code that
uses #[test] annotated functions. This gives nice reporting and the
ability to run individual tests.
* Fix text-file-busy error when running the binary by replacing the use
of named temp file with simply using the input source file and the
extension replaced. A scope guard make sure to also delete the binary.
* Fix hard-coded library dependencies by sharing code with the cmake
xtask that needs the same list.
This extracts a compiler command line from the cc crate, runs the
compiler and tries to run the resulting binary. Unfortunately the latter
fails still.
The objective is to have a bunch of .60 files with annotations inside
and the test harness picks them up and runs them through the Rust and
C++ frontend.
