check if test 33 running under MinGW

test cases/common/33 run program/check-mingw.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python3
+
+import os, sys, re
+
+if 'MSYSTEM' in os.environ and os.environ['MSYSTEM'] != '':
+    print(os.environ['MSYSTEM'])
+else:
+    match = re.search(r'[\\/](mingw32|mingw64|clang32|clang64|clangarm64|ucrt64)[\\/]', sys.executable, flags=re.IGNORECASE)
+    if match:
+        print(match.group(1).upper())

test cases/common/33 run program/meson.build

@@ -1,6 +1,9 @@
 project('run command', version : run_command('get-version.py', check : true).stdout().strip(), meson_version: '>=0.1.0')
 
-if build_machine.system() == 'windows'
+check_mingw = run_command('check-mingw.py', check : true).stdout().strip()
+is_mingw = not (check_mingw == '' or check_mingw == 'MSYS')
+
+if build_machine.system() == 'windows' and not is_mingw
   c = run_command('cmd', '/c', 'echo', 'hello', check: false)
 else
   c = run_command('echo', 'hello', check: false)
@@ -45,7 +48,7 @@ endif
 # We should be able to have files() in argument
 f = files('meson.build')
 
-if build_machine.system() == 'windows'
+if build_machine.system() == 'windows' and not is_mingw
   c = run_command('cmd', '/c', 'echo', f, check: false)
 else
   c = run_command('echo', f, check: false)