--- freem/src/init.c	2025/04/17 14:34:27	1.13
+++ freem/src/init.c	2025/05/16 04:02:14	1.15
@@ -1,5 +1,5 @@
 /*
- *   $Id: init.c,v 1.13 2025/04/17 14:34:27 snw Exp $
+ *   $Id: init.c,v 1.15 2025/05/16 04:02:14 snw Exp $
  *    FreeM initialization 
  *
  *  
@@ -24,6 +24,12 @@
  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
  *
  *   $Log: init.c,v $
+ *   Revision 1.15  2025/05/16 04:02:14  snw
+ *   Make FreeM build on macOS on Apple Silicon
+ *
+ *   Revision 1.14  2025/04/20 03:13:17  snw
+ *   Updates to init_execution_context
+ *
  *   Revision 1.13  2025/04/17 14:34:27  snw
  *   Further logging improvements
  *
@@ -82,6 +88,12 @@
 # include <termios.h>
 #endif
 
+#if defined(__APPLE__)
+# define termio termios
+# define TCGETA TIOCGETA
+# define TCSETA TIOCSETA
+#endif
+
 #include "config.h"
 
 #if defined(HAVE_MWAPI_MOTIF)
@@ -398,8 +410,7 @@ void init_timezone (void)
 
     long clock;
 
-#ifdef __CYGWIN__
-
+#if defined(__CYGWIN__)
     tzset ();                        /* may be required in order   */
                                      /* to guarantee _timezone set */
 #else
@@ -487,9 +498,10 @@ void init_execution_context (void)
     
     codptr = code;
     code[0] = EOL;          /* init code_pointer */
-    partition = calloc ((unsigned) (PSIZE + 2), 1);
 
-    if (partition == NULL) exit (2);            /* could not allocate stuff...     */
+    if ((partition = calloc ((unsigned) (PSIZE + 2), 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate symbol table (error code %d [%s])", errno, strerror (errno));
+    }
 
     for (i = 0; i < MAXNO_OF_RBUF; i++) {
         rbuf_flags[i].standard = standard;
@@ -503,39 +515,44 @@ void init_execution_context (void)
     s = &partition[PSIZE] - 256;    /* pointer to symlen_offset        */
     argptr = partition;         /* pointer to beg of tmp-storage   */
 
-    svntable = calloc ((unsigned) (UDFSVSIZ + 1), 1);
-    if (svntable == NULL) exit (2);         /* could not allocate stuff...     */
-    
+    if ((svntable = calloc ((unsigned) (UDFSVSIZ + 1), 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate user-defined ISV table (error code %d [%s])", errno, strerror (errno));
+    }    
     svnlen = UDFSVSIZ;          /* begin of udf_svn_table         */
-    buff = calloc ((unsigned) NO_OF_RBUF * (unsigned) PSIZE0, 1);   /* routine buffer pool          */
-    if (buff == NULL) exit (2);         /* could not allocate stuff...     */
 
+    if ((buff = calloc ((unsigned) NO_OF_RBUF * (unsigned) PSIZE0, 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate routine buffers (error code %d [%s])", errno, strerror (errno));
+    }
     
-    newstack = calloc ((unsigned) NSIZE, 1); 
-    if (newstack == NULL) exit (2);         /* could not allocate stuff...     */
+    if ((newstack = calloc ((unsigned) NSIZE, 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate NEW stack (error code %d [%s])", errno, strerror (errno));
+    }
 
-    #ifdef DEBUG_NEWPTR
-        printf("Allocating newptr stack...\r\n");
-    #endif
+    logprintf (FM_LOG_DEBUG, "allocating newptr stack...");
 
     newptr = newstack;
     newlimit = newstack + NSIZE - 1024;
     
 
-    namstck = calloc ((unsigned) NESTLEVLS * 13, 1);
-    if (namstck == NULL) exit (2);          /* could not allocate stuff...     */
-
+    if ((namstck = calloc ((unsigned) NESTLEVLS * 13, 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate newptr stack (error code %d [%s])", errno, strerror (errno));
+    }
+    
     *namstck = EOL;
     *(namstck + 1) = EOL;
     namptr = namstck;           /* routine name stack pointer       */
-    framstck = calloc ((unsigned) NESTLEVLS * 256, 1);
-    if (framstck == NULL) exit (2);         /* could not allocate stuff...     */
+    
+    if ((framstck = calloc ((unsigned) NESTLEVLS * 256, 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate DO frame stack stack (error code %d [%s])", errno, strerror (errno));
+    }
 
     *framstck = EOL;
     *(framstck + 1) = EOL;
     dofrmptr = framstck;        /* DO_frame stack pointer           */
-    cmdstack = calloc ((unsigned) NESTLEVLS * 256, 1);
-    if (cmdstack == NULL) exit (2);         /* could not allocate stuff...     */
+
+    if ((cmdstack = calloc ((unsigned) NESTLEVLS * 256, 1)) == NULL) {
+        logprintf (FM_LOG_FATAL, "init_execution_context:  could not allocate command stack (error code %d [%s])", errno, strerror (errno));
+    }
 
     cmdptr = cmdstack;          /* command stack */