2 files changed, 15 insertions, 0 deletions
diff --git a/src/misc/util/utilFile.c b/src/misc/util/utilFile.c
index 4bb2f4c6..b6835daa 100644
--- a/src/misc/util/utilFile.c
+++ b/src/misc/util/utilFile.c
@@ -102,6 +102,17 @@ int tmpFile(const char* prefix, const char* suffix, char** out_name)
     }
     assert(0);  // -- could not open temporary file
     return 0;
+#elif defined(__wasm)
+    static int seq = 0; // no risk of collision since we're in a sandbox
+    int fd;
+    *out_name = (char*)malloc(strlen(prefix) + strlen(suffix) + 9);
+    sprintf(*out_name, "%s%08d%s", prefix, seq++, suffix);
+    fd = open(*out_name, O_CREAT | O_EXCL | O_RDWR, S_IREAD | S_IWRITE);
+    if (fd == -1){
+        free(*out_name);
+        *out_name = NULL;
+    }
+    return fd;
 #else
     int fd;
     *out_name = (char*)malloc(strlen(prefix) + strlen(suffix) + 7);
diff --git a/src/misc/util/utilSignal.c b/src/misc/util/utilSignal.c
index 03af81d1..137ff54b 100644
--- a/src/misc/util/utilSignal.c
+++ b/src/misc/util/utilSignal.c
@@ -43,7 +43,11 @@ ABC_NAMESPACE_IMPL_START
 
 int Util_SignalSystem(const char* cmd)
 {
+#if defined(__wasm)
+    return -1;
+#else
     return system(cmd);
+#endif
 }
 
 int tmpFile(const char* prefix, const char* suffix, char** out_name);