windows: Canonicalize `:` in filenames

Fixes https://github.com/mesonbuild/meson/issues/7265

mesonbuild/backend/backends.py

@@ -501,6 +501,12 @@ class Backend:
         target.rpath_dirs_to_remove.update([d.encode('utf8') for d in result])
         return tuple(result)
 
+    @staticmethod
+    def canonicalize_filename(fname):
+        for ch in ('/', '\\', ':'):
+            fname = fname.replace(ch, '_')
+        return fname
+
     def object_filename_from_source(self, target, source):
         assert isinstance(source, mesonlib.File)
         build_dir = self.environment.get_build_dir()
@@ -531,7 +537,7 @@ class Backend:
                 source = os.path.relpath(os.path.join(build_dir, rel_src),
                                          os.path.join(self.environment.get_source_dir(), target.get_subdir()))
         machine = self.environment.machines[target.for_machine]
-        return source.replace('/', '_').replace('\\', '_') + '.' + machine.get_object_suffix()
+        return self.canonicalize_filename(source) + '.' + machine.get_object_suffix()
 
     def determine_ext_objs(self, extobj, proj_dir_to_build_root):
         result = []

mesonbuild/backend/ninjabackend.py

@@ -2160,7 +2160,7 @@ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47485'''))
             src_filename = os.path.basename(src)
         else:
             src_filename = src
-        obj_basename = src_filename.replace('/', '_').replace('\\', '_')
+        obj_basename = self.canonicalize_filename(src_filename)
         rel_obj = os.path.join(self.get_target_private_dir(target), obj_basename)
         rel_obj += '.' + self.environment.machines[target.for_machine].get_object_suffix()
         commands += self.get_compile_debugfile_args(compiler, target, rel_obj)

test cases/fortran/7 generated/meson.build

@@ -10,6 +10,8 @@ conf_data.set('THREE', 3)
 
 outfile = configure_file(
       input : 'mod3.fpp', output : 'mod3.f90', configuration : conf_data)
+# Manually build absolute path to source file to test
+# https://github.com/mesonbuild/meson/issues/7265
 three = library('mod3', meson.current_build_dir() / 'mod3.f90')
 
 templates_basenames = ['mod2', 'mod1']