Attempt to fix windows builds

recipes/farmhash/all/conanfile.py

@@ -29,6 +29,10 @@ class farmhashConan(ConanFile):
     def _source_subfolder(self):
         return "source_subfolder"
 
+    @property
+    def _settings_build(self):
+        return getattr(self, "settings_build", self.settings)
+
     def config_options(self):
         if self.settings.os == "Windows":
             del self.options.fPIC
@@ -37,14 +41,18 @@ def configure(self):
         if self.options.shared:
             del self.options.fPIC
 
+    def build_requirements(self):
+        if self._settings_build.os == "Windows" and not tools.get_env("CONAN_BASH_PATH"):
+            self.build_requires("msys2/cci.latest")
+
     def source(self):
         tools.get(**self.conan_data["sources"][self.version], strip_root=True,
                   destination=self._source_subfolder)
 
     def _configure_autotools(self):
         if self._autotools:
             return self._autotools
-        self._autotools = AutoToolsBuildEnvironment(self)
+        self._autotools = AutoToolsBuildEnvironment(self, win_bash=tools.os_info.is_windows)
         conf_args = []
         if self.options.shared:
             conf_args.extend(["--enable-shared", "--disable-static"])