Add support for Emscripten to the compiler.

compiler/libpc300/sc1.c

@@ -683,11 +683,13 @@ cleanup:
         pc_printf("Header size:       %8ld bytes\n", (long)hdrsize);
         pc_printf("Code size:         %8ld bytes\n", (long)code_idx);
         pc_printf("Data size:         %8ld bytes\n", (long)glb_declared*sizeof(cell));
-        pc_printf("Stack/heap size:   %8ld bytes; ", (long)sc_stksize*sizeof(cell));
+        pc_printf("Stack/heap size:   %8ld bytes\n", (long)sc_stksize*sizeof(cell));
+#if 0
         if (stacksize<0)
           pc_printf("max. usage is unknown, due to recursion\n");
         else if (stacksize>0)
           pc_printf("estimated max. usage=%ld cells (%ld bytes)\n",stacksize,stacksize*sizeof(cell));
+#endif
         pc_printf("Total requirements:%8ld bytes\n", (long)hdrsize+(long)code_idx+(long)glb_declared*sizeof(cell)+(long)sc_stksize*sizeof(cell));
       } /* if */
       if (flag_exceed)
@@ -1253,7 +1255,7 @@ static void setconfig(char *root)
     /* add the default "include" directory */
     #if defined __WIN32__ || defined _WIN32
       GetModuleFileName(NULL,path,_MAX_PATH);
-    #elif defined LINUX || defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__
+    #elif defined ENABLE_BINRELOC && (defined LINUX || defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__)
       /* see www.autopackage.org for the BinReloc module */
       ptr = (char *)SELFPATH;
       if (!ptr)

compiler/libpc300/sc2.c

@@ -586,7 +586,7 @@ static int htoi(cell *val,const unsigned char *curptr)
     return (int)(ptr-curptr);
 }
 
-#if defined __GNUC__
+#if defined __APPLE__
 static double pow10(double d)
 {
 	return pow(10, d);

compiler/libpc300/sclinux.h

@@ -31,7 +31,11 @@
  * For Linux, we must overrule these settings with those defined in glibc.
  */
 #if !defined __BYTE_ORDER
-# include <stdlib.h>
+# if defined EMSCRIPTEN
+#  include <endian.h>
+# else
+#  include <stdlib.h>
+# endif
 # if defined __APPLE__
 #  include <sys/types.h>
 #  define __BYTE_ORDER BYTE_ORDER