environment: really remove assertion

Fixes: mesonbuild#14789
Signed-off-by: Paolo Bonzini <[email protected]>
(cherry picked from commit 0376d65)

Author: bonzini

mesonbuild/environment.py

@@ -728,7 +728,6 @@ def __init__(self, source_dir: str, build_dir: T.Optional[str], cmd_options: cor
 
     def mfilestr2key(self, machine_file_string: str, section: T.Optional[str], section_subproject: T.Optional[str], machine: MachineChoice) -> OptionKey:
         key = OptionKey.from_string(machine_file_string)
-        assert key.machine == MachineChoice.HOST
         if key.subproject:
             suggestion = section if section == 'project options' else 'built-in options'
             raise MesonException(f'Do not set subproject options in [{section}] section, use [subproject:{suggestion}] instead.')

test cases/unit/69 cross/nativefile.in

@@ -1,2 +1,2 @@
 [built-in options]
-c_args = ['@c_args@']
+build.c_args = ['@c_args@']