--- SheepShaver/src/Unix/configure.in	2003/11/24 23:39:35	1.9
+++ SheepShaver/src/Unix/configure.in	2003/11/27 11:09:38	1.11
@@ -544,9 +544,6 @@ AC_CACHE_CHECK([whether the compiler can
 ])
 ELF_OBJECTS=$ac_cv_elf_objects
 
-dnl FIXME: forcibly disable JIT for now
-WANT_JIT=no
-
 dnl CPU emulator sources
 if [[ "x$EMULATED_PPC" = "xyes" ]]; then
   CPUSRCS="\
@@ -577,7 +574,7 @@ if [[ "x$EMULATED_PPC" = "xyes" ]]; then
     ])
     if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
       case $host_cpu in
-      i?86:yes)
+      i?86)
         DYNGEN_OP_FLAGS="-fomit-frame-pointer -mpreferred-stack-boundary=2"
         if [[ "x$HAVE_GCC30" = "xyes" ]]; then
           DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -falign-functions=0"
@@ -606,6 +603,29 @@ if [[ "x$EMULATED_PPC" = "xyes" ]]; then
   fi
   CPUSRCS="$CPUSRCS ../kpx_cpu/sheepshaver_glue.cpp"
 fi
+if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
+  AC_CACHE_CHECK([whether static data regions are executable],
+    ac_cv_have_static_data_exec, [
+    AC_TRY_RUN([int main(void) {
+#if defined(__powerpc__)
+      static unsigned int p[8] = {0x4e800020,};
+      asm volatile("dcbst 0,%0" : : "r" (p) : "memory");
+      asm volatile("sync" : : : "memory");
+      asm volatile("icbi 0,%0" : : "r" (p) : "memory");
+      asm volatile("sync" : : : "memory");
+      asm volatile("isync" : : : "memory");
+      ((void (*)(void))p)();
+      return 0;
+#endif
+      return 1;
+    }], ac_cv_have_static_data_exec=yes, ac_cv_have_static_data_exec=no,
+    dnl When cross-compiling, do not assume anything.
+    ac_cv_have_static_data_exec=no
+    )
+  ])
+fi
+AC_TRANSLATE_DEFINE(HAVE_STATIC_DATA_EXEC, "$ac_cv_have_static_data_exec",
+  [Define if your system marks static data pages as executable.])
 
 dnl Generate Makefile.
 AC_SUBST(DYNGENSRCS)