backends/ninja: run `ranlib -c $out` when using the apple ar
Apple's AR is old, and doesn't add externed symbols to the symbol table,
instead relying on the user calling ranlib with -c. We need to do that
for the user
@@ -42,7 +42,7 @@ from ..compilers import (
PGICCompiler,
VisualStudioLikeCompiler,
)
-from ..linkers import ArLinker, RSPFileSyntax
+from ..linkers import ArLinker, AppleArLinker, RSPFileSyntax
from ..mesonlib import (
File, LibType, MachineChoice, MesonException, OrderedSet, PerMachine,
ProgressBar, quote_arg
@@ -2028,7 +2028,7 @@ class NinjaBackend(backends.Backend):
if static_linker is None:
continue
rule = 'STATIC_LINKER{}'.format(self.get_rule_suffix(for_machine))
- cmdlist = []
+ cmdlist: T.List[T.Union[str, NinjaCommandArg]] = []
args = ['$in']
# FIXME: Must normalize file names with pathlib.Path before writing
# them out to fix this properly on Windows. See:
@@ -2042,6 +2042,17 @@ class NinjaBackend(backends.Backend):
cmdlist += static_linker.get_exelist()
cmdlist += ['$LINK_ARGS']
cmdlist += NinjaCommandArg.list(static_linker.get_output_args('$out'), Quoting.none)
+ # The default ar on MacOS (at least through version 12), does not
+ # add extern'd variables to the symbol table by default, and
+ # requires that apple's ranlib be called with a special flag
+ # instead after linking
+ if isinstance(static_linker, AppleArLinker):
+ # This is a bit of a hack, but we assume that that we won't need
+ # an rspfile on MacOS, otherwise the arguments are passed to
+ # ranlib, not to ar
+ cmdlist.extend(args)
+ args = []
+ cmdlist.extend(['&&', 'ranlib', '-c', '$out'])
description = 'Linking static target $out'
if num_pools > 0:
pool = 'pool = link_pool'
