diff options
Diffstat (limited to 'meson.build')
| -rw-r--r-- | meson.build | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/meson.build b/meson.build index 58a1406..a485d8b 100644 --- a/meson.build +++ b/meson.build @@ -492,15 +492,25 @@ foreach h : ['sys/mman.h', 'fenv.h', 'unistd.h'] endif endforeach -# gcc on Windows only warns that __declspec(thread) isn't supported, -# passing -Werror=attributes makes it fail. -if (host_machine.system() == 'windows' and - cc.compiles('int __declspec(thread) foo;', - args : cc.get_supported_arguments(['-Werror=attributes']), - name : 'TLS via __declspec(thread)')) - config.set('TLS', '__declspec(thread)') -elif cc.compiles('int __thread foo;', name : 'TLS via __thread') - config.set('TLS', '__thread') +use_tls = get_option('tls') +have_tls = '' +if not use_tls.disabled() + # gcc on Windows only warns that __declspec(thread) isn't supported, + # passing -Werror=attributes makes it fail. + if (host_machine.system() == 'windows' and + cc.compiles('int __declspec(thread) foo;', + args : cc.get_supported_arguments(['-Werror=attributes']), + name : 'TLS via __declspec(thread)')) + have_tls = '__declspec(thread)' + elif cc.compiles('int __thread foo;', name : 'TLS via __thread') + have_tls = '__thread' + endif +endif + +if have_tls != '' + config.set('TLS', have_tls) +elif use_tls.enabled() + error('Compiler TLS Support unavailable, but required') endif if cc.links(''' |