configure: Require floating point support on ARM.

configure

@@ -5265,6 +5265,29 @@ rm -f core conftest.err conftest.$ac_objext \
     CFLAGS="$CFLAGS -marm"
     TARGETFLAGS="-marm"
 
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports floating point" >&5
+$as_echo_n "checking whether $CC supports floating point... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+asm("vmrs r2,fpscr");
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+                       as_fn_error $? "You need a target with floating point support to build Wine for ARM." "$LINENO" 5
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
     ;;
   i[3456789]86*)
     enable_win16=${enable_win16:-yes}

configure.ac

@@ -179,6 +179,11 @@ case $host in
                        AC_MSG_ERROR([You need a target with Thumb support to build Wine for ARM.])])
     CFLAGS="$CFLAGS -marm"
     AC_SUBST(TARGETFLAGS,"-marm")
+    AC_MSG_CHECKING([whether $CC supports floating point])
+    WINE_TRY_ASM_LINK(["vmrs r2,fpscr"],,,
+                      [AC_MSG_RESULT([yes])],
+                      [AC_MSG_RESULT([no])
+                       AC_MSG_ERROR([You need a target with floating point support to build Wine for ARM.])])
     ;;
   i[[3456789]]86*)
     enable_win16=${enable_win16:-yes}