Do not use linker arguments on static libraries.

ninjabackend.py

@@ -1450,6 +1450,7 @@ rule FORTRAN_DEP_HACK
         for d in target.external_deps:
             if d.need_threads():
                 commands += linker.thread_link_flags()
+        if not isinstance(target, build.StaticLibrary):
             commands += target.link_args
         # External deps must be last because target link libraries may depend on them.
         if not(isinstance(target, build.StaticLibrary)):

test cases/common/3 static/meson.build

@@ -1,2 +1,3 @@
 project('static library test', 'c')
-lib = static_library('mylib', 'libfile.c')
+lib = static_library('mylib', 'libfile.c',
+  link_args : '-THISMUSTNOBEUSED') # Static linker needs to ignore all link args.