3 files changed, 34 insertions, 2 deletions
diff --git a/src/misc/util/abc_global.h b/src/misc/util/abc_global.h
index d1a9b4d3..2217bb87 100644
--- a/src/misc/util/abc_global.h
+++ b/src/misc/util/abc_global.h
@@ -94,8 +94,6 @@
 ///                         PARAMETERS                               ///
 ////////////////////////////////////////////////////////////////////////
 
-ABC_NAMESPACE_HEADER_START
-
 ////////////////////////////////////////////////////////////////////////
 ///                         BASIC TYPES                              ///
 ////////////////////////////////////////////////////////////////////////
@@ -143,6 +141,8 @@ ABC_NAMESPACE_HEADER_START
 
 #endif
 
+ABC_NAMESPACE_HEADER_START
+
 /**
  * Pointer difference type; replacement for ptrdiff_t.
  * This is a signed integral type that is the same size as a pointer.
diff --git a/src/misc/util/utilFile.c b/src/misc/util/utilFile.c
index 4bb2f4c6..f64d71c2 100644
--- a/src/misc/util/utilFile.c
+++ b/src/misc/util/utilFile.c
@@ -25,6 +25,23 @@
 #include <fcntl.h>
 #include <sys/stat.h>
 
+// Handle legacy macros
+#if !defined(S_IREAD)
+#if defined(S_IRUSR)
+#define S_IREAD S_IRUSR
+#else
+#error S_IREAD is undefined
+#endif
+#endif
+
+#if !defined(S_IWRITE)
+#if defined(S_IWUSR)
+#define S_IWRITE S_IWUSR
+#else
+#error S_IWRITE is undefined
+#endif
+#endif
+
 #if defined(_MSC_VER) || defined(__MINGW32__)
 #include <windows.h>
 #include <process.h>
@@ -102,6 +119,17 @@ 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);