Fix an issue with the --em-config cmdline option where the option was not seen by child processes spawned by emcc. To make sure all child processes see the same config file, the --em-config parameter is stored in the environment for current and child processes.

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/shared.py b/tools/shared.py
index e4fb7e08..ca31d39c 100644
--- a/tools/shared.py
+++ b/tools/shared.py
@@ -184,6 +184,9 @@ else:
 
 try:
   EM_CONFIG = sys.argv[sys.argv.index('--em-config')+1]
+  # Emscripten compiler spawns other processes, which can reimport shared.py, so make sure that
+  # those child processes get the same configuration file by setting it to the currently active environment.
+  os.environ['EM_CONFIG'] = EM_CONFIG
 except:
   EM_CONFIG = os.environ.get('EM_CONFIG')