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rust: clean up detection of the language 

Disable the detection code altogether if have_system == false.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-10-18 19:33:22 +02:00
parent bb42965dd4
commit e2b3905b66
1 changed files with 22 additions and 20 deletions
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42
meson.build
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@ -53,6 +53,17 @@ cpu = host_machine.cpu_family()
target_dirs = config_host['TARGET_DIRS'].split()
# type of binaries to build
have_linux_user = false
have_bsd_user = false
have_system = false
foreach target : target_dirs
have_linux_user = have_linux_user or target.endswith('linux-user')
have_bsd_user = have_bsd_user or target.endswith('bsd-user')
have_system = have_system or target.endswith('-softmmu')
endforeach
have_user = have_linux_user or have_bsd_user
############
# Programs #
############
@ -71,11 +82,13 @@ if host_os == 'darwin' and \
all_languages += ['objc']
objc = meson.get_compiler('objc')
endif
have_rust = false
if not get_option('rust').disabled() and add_languages('rust', required: get_option('rust'), native: false) \
and add_languages('rust', required: get_option('rust'), native: true)
have_rust = add_languages('rust', native: false,
required: get_option('rust').disable_auto_if(not have_system))
have_rust = have_rust and add_languages('rust', native: true,
required: get_option('rust').disable_auto_if(not have_system))
if have_rust
rustc = meson.get_compiler('rust')
have_rust = true
if rustc.version().version_compare('<1.80.0')
if get_option('rust').enabled()
error('rustc version ' + rustc.version() + ' is unsupported: Please upgrade to at least 1.80.0')
@ -186,17 +199,6 @@ have_vhost_net_vdpa = have_vhost_vdpa and get_option('vhost_net').allowed()
have_vhost_net_kernel = have_vhost_kernel and get_option('vhost_net').allowed()
have_vhost_net = have_vhost_net_kernel or have_vhost_net_user or have_vhost_net_vdpa
# type of binaries to build
have_linux_user = false
have_bsd_user = false
have_system = false
foreach target : target_dirs
have_linux_user = have_linux_user or target.endswith('linux-user')
have_bsd_user = have_bsd_user or target.endswith('bsd-user')
have_system = have_system or target.endswith('-softmmu')
endforeach
have_user = have_linux_user or have_bsd_user
have_tools = get_option('tools') \
.disable_auto_if(not have_system) \
.allowed()
@ -3336,7 +3338,7 @@ endif
genh += configure_file(output: 'config-host.h', configuration: config_host_data)
if have_rust and have_system
if have_rust
rustc_args = run_command(
find_program('scripts/rust/rustc_args.py'),
'--config-headers', meson.project_build_root() / 'config-host.h',
@ -3957,7 +3959,7 @@ common_all = static_library('common',
implicit_include_directories: false,
dependencies: common_ss.all_dependencies())
if have_rust and have_system
if have_rust
bindgen_args = [
'--disable-header-comment',
'--raw-line', '// @generated',
@ -4111,7 +4113,7 @@ foreach target : target_dirs
arch_srcs += target_specific.sources()
arch_deps += target_specific.dependencies()
if have_rust and have_system
if have_rust and target_type == 'system'
target_rust = rust_devices_ss.apply(config_target, strict: false)
crates = []
foreach dep : target_rust.dependencies()
@ -4473,9 +4475,9 @@ else
endif
summary_info += {'Rust support': have_rust}
if have_rust
summary_info += {'rustc version': rustc.version()}
summary_info += {'rustc': ' '.join(rustc.cmd_array())}
summary_info += {'Rust target': config_host['RUST_TARGET_TRIPLE']}
summary_info += {'rustc': ' '.join(rustc.cmd_array())}
summary_info += {'rustc version': rustc.version()}
endif
option_cflags = (get_option('debug') ? ['-g'] : [])
if get_option('optimization') != 'plain'