fix mingw build

ext/Soundpipe/meson.build

@@ -23,8 +23,9 @@ pre_soundpipe = custom_target (
   'pre-soundpipe',
   output: 'pre-soundpipe',
   command: [
-    'cd', meson.current_source_dir (), '&&',
-    'CC=' + cc.get_id (), 'make',
+    bash, '-c',
+    'cd ' + meson.current_source_dir () + ' && ' +
+    'CC=' + cc.get_id () + ' make -j1',
     ])
 
 soundpipe_lib = static_library (

meson.build

@@ -27,6 +27,8 @@ project (
     ],
   )
 
+bash = find_program ('bash')
+
 cc = meson.get_compiler ('c')
 
 # detect os