We want to ensure that our automation builds don't pull in libraries
from crates.io, and we need --frozen support in cargo to do that. If we
don't have that support, we shouldn't build.
The base compiler check in python configure does some preprocessing,
which ensures the compiler works to some extent. Autoconf used to have
a more complete test, doing a compile/link. We do have plenty of tests
afterwards that do that anyways, but it's better if we fail early if
the toolchain fails somehow.
This refactors try_compile such that the *_compiler variable themselves
can be used to trigger compiler tests. Eventually, we'll want something
similar for preprocessing and possibly other invocations.
This also removes similar tests from build/autoconf/toolchain.m4.
--HG--
extra : rebase_source : c60d1d6e39b6bd2a377516687affd9b8932ebc12
This patch is really two separate changes.
The first change is that rust crates are large, standalone entities that
may contain multitudes of source files. It therefore doesn't make sense
to keep them in SOURCES, as we have been doing. Moving to use cargo
will require a higher-level approach, which suggests that we need a
different, higher-level representation for Rust sources in the build
system.
The representation here is to have the build system refer to things
defined in Cargo.toml files as the entities dealt with in the build
system, and let Cargo deal with the details of actually building things.
This approach means that adding a new crate to an existing library just
requires editing Rust and Cargo.toml files, rather than dealing with
moz.build, which seems more natural to Rust programmers. By having the
source files for libraries (and binaries in subsequent iterations of
this support) checked in to the tree, we can also take advantage of
Cargo.lock files.
The second is that we switch the core build system over to building via
cargo, rather than invoking rustc directly.
We also clean up a number of leftover things from the Old Way of doing
things. A number of tests are added to confirm that we'll only permit
crates to be built that have dependencies in-tree.
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
It has not been useful since we removed the possibility to build in the
source directory.
--HG--
extra : rebase_source : 479100785c8253ea3e255ebbda4b3538e8ed33ff
Since bug 1259382, CC and CXX are always set, so we can stop
falling back to cl on Windows, and clang on OSX in compiler-opts.m4.
Also, we were actively rejecting GCC on OSX because it was based on
GCC 4.2 and known to be broken, but that test predates our requirement
for more recent versions of GCC, which would fail configure anyways.
So just remove that GCC test. Building with a modern GCC from macports
or wherever might actually work anyways.
Finally, remove target bit-width mismatch with the compiler as it's
handled in python configure since bug 1288313.
--HG--
extra : rebase_source : 9968028cc4e9c197b72136037a7298be10cc139a
The base compiler check in python configure does some preprocessing,
which ensures the compiler works to some extent. Autoconf used to have
a more complete test, doing a compile/link. We do have plenty of tests
afterwards that do that anyways, but it's better if we fail early if
the toolchain fails somehow.
This refactors try_compile such that the *_compiler variable themselves
can be used to trigger compiler tests. Eventually, we'll want something
similar for preprocessing and possibly other invocations.
This also removes similar tests from build/autoconf/toolchain.m4 and
old-configure.in.
--HG--
extra : rebase_source : 4f6f84e5ad220386e9edf82d19cc2cd6c1f4c43e
This patch is really two separate changes.
The first change is that rust crates are large, standalone entities that
may contain multitudes of source files. It therefore doesn't make sense
to keep them in SOURCES, as we have been doing. Moving to use cargo
will require a higher-level approach, which suggests that we need a
different, higher-level representation for Rust sources in the build
system.
The representation here is to have the build system refer to things
defined in Cargo.toml files as the entities dealt with in the build
system, and let Cargo deal with the details of actually building things.
This approach means that adding a new crate to an existing library just
requires editing Rust and Cargo.toml files, rather than dealing with
moz.build, which seems more natural to Rust programmers. By having the
source files for libraries (and binaries in subsequent iterations of
this support) checked in to the tree, we can also take advantage of
Cargo.lock files.
The second is that we switch the core build system over to building via
cargo, rather than invoking rustc directly.
We also clean up a number of leftover things from the Old Way of doing
things. A number of tests are added to confirm that we'll only permit
crates to be built that have dependencies in-tree.
The ld that we use for Mac builds is old (Xcode circa OS X 10.7), and
also crashes in various ways when we try to use newer Rust versions
and/or pass options to make the linker work with newer Rust versions.
To mitigate this, let's build with a newer linker, compiled from:
https://github.com/tpoechtrager/cctools-port
We use this port, rather than the packages from opensource.apple.com,
because the packages from Apple have decidely non-intuitive build
systems, and require some hacking to get to build. This port, in
contrast, is simply built with:
CFLAGS='-mcpu=generic -mtune=generic' ./configure --target=x86_64-apple-darwin11
env MACOSX_DEPLOYMENT_TARGET=10.7 make
and the resulting x86_64-apple-darwin11-ld is renamed as 'ld' and
packaged up for automation's purposes.
However, since this linker is newer, it also produces bits of Mach-O
that our older build tools don't understand. Fortunately, we can pass
appropriate options to the linker to turn off generation of those Mach-O
bits.
Now that check_prog, through find_program, returns paths that the build
system can handle, we don't need MT to just be "mt.exe".
However, we still need the PATH to be altered for the other tools we're
not checking in python configure yet (e.g. midl). We also still need
PATH altered for the compiler itself, because for e.g. the amd_x86
version, a necessary DLL is in the amd directory, which means PATH
always needs to be altered for cl.exe.
While we're here changing the MSVC tooltool package, and since we're
going to remove the INCLUDE and LIB lines from mozconfigs that contain
the SDK version, we might as well make the SDK in the tooltool package
closer to an actual SDK, so that automation and local build more or
less follow the same (upcoming) configure code path.
autospider builds set VSPATH before sourcing
build/win*/mozconfig.vs-latest, so VSWINPATH was never set. Furthermore,
the way it sets variables for the build system relies on the variable
going through and export from mk_add_options, which
mk_export_correct_style conveniently does for us.
The ld that we use for Mac builds is old (Xcode circa OS X 10.7), and
also crashes in various ways when we try to use newer Rust versions
and/or pass options to make the linker work with newer Rust versions.
To mitigate this, let's build with a newer linker, compiled from:
https://github.com/tpoechtrager/cctools-port
We use this port, rather than the packages from opensource.apple.com,
because the packages from Apple have decidely non-intuitive build
systems, and require some hacking to get to build. This port, in
contrast, is simply built with:
CFLAGS='-mcpu=generic -mtune=generic' ./configure --target=x86_64-apple-darwin11
env MACOSX_DEPLOYMENT_TARGET=10.7 make
and the resulting x86_64-apple-darwin11-ld is renamed as 'ld' and
packaged up for automation's purposes.
However, since this linker is newer, it also produces bits of Mach-O
that our older build tools don't understand. Fortunately, we can pass
appropriate options to the linker to turn off generation of those Mach-O
bits.
