meson: support rust cross-compiling with cargo wrapper

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1189>
This commit is contained in:
Lily Foster 2023-04-21 10:50:22 -04:00 committed by Sebastian Dröge
parent d7ec86defe
commit 7a0f6272ce
2 changed files with 28 additions and 3 deletions

View file

@ -82,6 +82,16 @@ if __name__ == "__main__":
pkg_config_path.append(str(opts.root_dir / 'meson-uninstalled'))
env['PKG_CONFIG_PATH'] = os.pathsep.join(pkg_config_path)
rustc_target = None
if 'RUSTFLAGS' in env:
# grab target from RUSTFLAGS
rust_flags = env['RUSTFLAGS'].split()
if '--target' in rust_flags:
rustc_target_idx = rust_flags.index('--target')
_ = rust_flags.pop(rustc_target_idx) # drop '--target'
rustc_target = rust_flags.pop(rustc_target_idx)
env['RUSTFLAGS'] = ' '.join(rust_flags)
features = opts.features
if opts.command == 'build':
cargo_cmd = ['cargo']
@ -100,6 +110,8 @@ if __name__ == "__main__":
print("Unknown command:", opts.command, file=logfile)
sys.exit(1)
if rustc_target:
cargo_cmd += ['--target', rustc_target]
if features:
cargo_cmd += ['--features', ','.join(features)]
cargo_cmd += ['--target-dir', cargo_target_dir]

View file

@ -21,13 +21,14 @@ endif
cargo = find_program('cargo', version:'>=1.40')
cargo_wrapper = find_program('cargo_wrapper.py')
cargo_c = find_program('cargo-cbuild', version:'>=0.9.3', required: false)
rustc = find_program('rustc', version:'>=1.52')
rustc = meson.get_compiler('rust')
if not cargo_c.found()
error('cargo-c missing, install it with: \'cargo install cargo-c\'')
endif
system = build_machine.system()
system = host_machine.system()
exe_suffix = ''
if system == 'windows'
exe_suffix = '.exe'
@ -365,7 +366,7 @@ pkgconfig_install_dir = get_option('libdir') / 'pkgconfig'
extra_args = []
if get_option('doc').disabled()
extra_args = ['--disable-doc']
extra_args += ['--disable-doc']
endif
# 'pkgconfig' is the entry in the machine file, if specified
@ -383,6 +384,18 @@ if pkg_config_path.length() > 0
extra_env += {'PKG_CONFIG_PATH': pathsep.join(pkg_config_path)}
endif
# get compiler and flags for rust (if any)
rustc_cmd = ''
rust_flags = []
foreach rustc_arg : rustc.cmd_array()
if rustc_cmd == ''
rustc_cmd = rustc_arg
else
rust_flags += [rustc_arg]
endif
endforeach
extra_env += {'RUSTC': rustc_cmd, 'RUSTFLAGS': ' '.join(rust_flags)}
rs_plugins = custom_target('gst-plugins-rs',
build_by_default: true,
output: output,