--- ATLAS/CONFIG/src/SpewMakeInc.c.orig	2012-05-24 00:56:27.000000000 +0200
+++ ATLAS/CONFIG/src/SpewMakeInc.c	2012-06-06 15:17:40.000000000 +0200
@@ -370,7 +370,7 @@
    }
    *f2cdefs = fdefs;
    *ecdefs = cdefs;
-   if (*ptrbits != 32 && *ptrbits != 64)
+   if (*ptrbits != 32 && *ptrbits != 64 && *ptrbits != 48)
       *ptrbits = 0;
 }
 char *GetPtrbitsFlag(enum OSTYPE OS, enum MACHTYPE arch, int ptrbits,
@@ -418,6 +418,8 @@
          sp = "-m64";
        else if (ptrbits == 32)
          sp = "-m32";
+       else if (ptrbits == 48 && MachIsX86(arch))
+         sp = "-mx32";
    }
    return(sp);
 }
--- ATLAS/CONFIG/src/gnuccw.c.orig	2012-06-06 15:30:05.000000000 +0200
+++ ATLAS/CONFIG/src/gnuccw.c	2012-06-06 15:33:29.000000000 +0200
@@ -363,7 +363,7 @@
  *          -m64/32 args get passed to comp, asm & linker
  */
             else if (at->len == 4 &&
-                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32")))
+                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32") || !strcmp(at->arg, "-mx32")))
             {
                if (at->arg[2] == '6')
                   *BITS = 64;
--- ATLAS/CONFIG/src/gcc3p.c.orig	2012-06-06 15:29:38.000000000 +0200
+++ ATLAS/CONFIG/src/gcc3p.c	2012-06-06 15:31:17.000000000 +0200
@@ -352,7 +352,7 @@
  *          -m64/32 args get passed to comp, asm & linker
  */
             else if (at->len == 4 &&
-                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32")))
+                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32") || !strcmp(at->arg, "-mx32")))
             {
                if (at->arg[2] == '6')
                {
--- ATLAS/CONFIG/src/gnuf90w.c.orig	2012-06-06 15:29:28.000000000 +0200
+++ ATLAS/CONFIG/src/gnuf90w.c	2012-06-06 15:30:36.000000000 +0200
@@ -363,7 +363,7 @@
  *          -m64/32 args get passed to comp, asm & linker
  */
             else if (at->len == 4 &&
-                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32")))
+                     (!strcmp(at->arg, "-m64") || !strcmp(at->arg, "-m32") || !strcmp(at->arg, "-mx32")))
             {
                if (at->arg[2] == '6')
                   *BITS = 64;
--- ATLAS/CONFIG/src/probe_comp.c.orig	2012-06-06 15:29:51.000000000 +0200
+++ ATLAS/CONFIG/src/probe_comp.c	2012-06-06 15:32:50.000000000 +0200
@@ -614,6 +614,8 @@
          sp = "-m64";
        else if (ptrbits == 32)
          sp = "-m32";
+       else if (ptrbits == 48)
+         sp = "-mx32";
    }
    return(sp);
 }
@@ -1691,7 +1693,7 @@
          }
       }
    }
-   if (*ptrbits != 32 && *ptrbits != 64)
+   if (*ptrbits != 32 && *ptrbits != 64 && *ptrbits != 48)
       *ptrbits = 0;
 }
 
--- ATLAS/CONFIG/src/config.c.orig	2012-06-06 15:59:53.000000000 +0200
+++ ATLAS/CONFIG/src/config.c	2012-06-06 16:00:07.000000000 +0200
@@ -183,7 +183,7 @@
    i = sprintf(ln, "make IRun_comp args=\"-v %d -o atlconf.txt -O %d -A %d -Si nof77 %d -V %d %s %s",
                verb, OS, arch, nof77, vecext, targarg, flags);
    free(flags);
-   if (ptrbits == 64 || ptrbits == 32)
+   if (ptrbits == 64 || ptrbits == 32 || ptrbits == 48)
    {
       sprintf(stmp, "-b %d", ptrbits);
       ln = NewAppendedString(ln, stmp);
@@ -1272,7 +1272,7 @@
    }
    *f2cdefs = fdefs;
    *ecdefs = cdefs;
-   if (*ptrbits != 32 && *ptrbits != 64)
+   if (*ptrbits != 32 && *ptrbits != 64 && *ptrbits != 48)
       *ptrbits = 0;
 }