Use exec_process in emcmake/emmake/emconfigure. NFC (#25452)

As well as speeding things up I hope this side steps #25450.

Author: sbc100

emcmake.py

@@ -11,7 +11,6 @@
 from tools import shared
 from tools import config
 from tools import utils
-from subprocess import CalledProcessError
 
 
 #
@@ -63,11 +62,7 @@ def has_substr(args, substr):
       return 1
 
   print(f'emcmake: {shlex.join(args)} in directory {os.getcwd()}', file=sys.stderr)
-  try:
-    shared.check_call(args)
-    return 0
-  except CalledProcessError as e:
-    return e.returncode
+  shared.exec_process(args)
 
 
 if __name__ == '__main__':

emconfigure.py

@@ -21,7 +21,6 @@
 import sys
 from tools import building
 from tools import shared
-from subprocess import CalledProcessError
 
 
 #
@@ -50,11 +49,8 @@ def run():
   # is a heuristic emulation that may or may not work.
   env['EMMAKEN_JUST_CONFIGURE'] = '1'
   print(f'emconfigure: {shlex.join(args)} in directory {os.getcwd()}', file=sys.stderr)
-  try:
-    shared.check_call(args, env=env)
-    return 0
-  except CalledProcessError as e:
-    return e.returncode
+  os.environ.update(env)
+  shared.exec_process(args)
 
 
 if __name__ == '__main__':

emmake.py

@@ -28,7 +28,6 @@
 from tools import building
 from tools import shared
 from tools import utils
-from subprocess import CalledProcessError
 
 
 #
@@ -59,11 +58,11 @@ def run():
   # executable extension lookup, e.g. 'sdl2-config' will match with
   # 'sdl2-config.bat' in PATH.
   print(f'emmake: "{shlex.join(args)}" in "{os.getcwd()}"', file=sys.stderr)
-  try:
-    shared.check_call(args, shell=utils.WINDOWS, env=env)
-    return 0
-  except CalledProcessError as e:
-    return e.returncode
+  if utils.WINDOWS:
+    return shared.run_process(args, check=False, shell=True, env=env).returncode
+  else:
+    os.environ.update(env)
+    shared.exec_process(args)
 
 
 if __name__ == '__main__':