Add mechanism to override OS (for testing purposes) (#993)
Similar to `EMSDK_ARCH` which I added in #935.
diff --git a/emsdk.py b/emsdk.py
index 8c0dbd6..d671d7b 100644
--- a/emsdk.py
+++ b/emsdk.py
@@ -58,10 +58,6 @@
VERBOSE = int(os.getenv('EMSDK_VERBOSE', '0'))
TTY_OUTPUT = not os.getenv('EMSDK_NOTTY', not sys.stdout.isatty())
-WINDOWS = False
-if os.name == 'nt' or (os.getenv('SYSTEMROOT') is not None and 'windows' in os.getenv('SYSTEMROOT').lower()) or (os.getenv('COMSPEC') is not None and 'windows' in os.getenv('COMSPEC').lower()):
- WINDOWS = True
-
def errlog(msg):
print(msg, file=sys.stderr)
@@ -72,26 +68,42 @@
sys.exit(1)
+WINDOWS = False
MINGW = False
MSYS = False
-if os.getenv('MSYSTEM'):
- MSYS = True
- # Some functions like os.path.normpath() exhibit different behavior between
- # different versions of Python, so we need to distinguish between the MinGW
- # and MSYS versions of Python
- if sysconfig.get_platform() == 'mingw':
- MINGW = True
- if os.getenv('MSYSTEM') != 'MSYS' and os.getenv('MSYSTEM') != 'MINGW64':
- # https://stackoverflow.com/questions/37460073/msys-vs-mingw-internal-environment-variables
- errlog('Warning: MSYSTEM environment variable is present, and is set to "' + os.getenv('MSYSTEM') + '". This shell has not been tested with emsdk and may not work.')
-
MACOS = False
-if platform.mac_ver()[0] != '':
- MACOS = True
-
LINUX = False
-if not MACOS and (platform.system() == 'Linux'):
- LINUX = True
+
+if 'EMSDK_OS' in os.environ:
+ EMSDK_OS = os.environ['EMSDK_OS']
+ if EMSDK_OS == 'windows':
+ WINDOWS = True
+ elif EMSDK_OS == 'linux':
+ LINUX = True
+ elif EMSDK_OS == 'macos':
+ MACOS = True
+ else:
+ assert False
+else:
+ if os.name == 'nt' or (os.getenv('SYSTEMROOT') is not None and 'windows' in os.getenv('SYSTEMROOT').lower()) or (os.getenv('COMSPEC') is not None and 'windows' in os.getenv('COMSPEC').lower()):
+ WINDOWS = True
+
+ if os.getenv('MSYSTEM'):
+ MSYS = True
+ # Some functions like os.path.normpath() exhibit different behavior between
+ # different versions of Python, so we need to distinguish between the MinGW
+ # and MSYS versions of Python
+ if sysconfig.get_platform() == 'mingw':
+ MINGW = True
+ if os.getenv('MSYSTEM') != 'MSYS' and os.getenv('MSYSTEM') != 'MINGW64':
+ # https://stackoverflow.com/questions/37460073/msys-vs-mingw-internal-environment-variables
+ errlog('Warning: MSYSTEM environment variable is present, and is set to "' + os.getenv('MSYSTEM') + '". This shell has not been tested with emsdk and may not work.')
+
+ if platform.mac_ver()[0] != '':
+ MACOS = True
+
+ if not MACOS and (platform.system() == 'Linux'):
+ LINUX = True
UNIX = (MACOS or LINUX)
