Maxing the x-axis of the time domain plot represent the actual time of the samples...
[debian/gnuradio] / config / gr_set_md_cpu.m4
index d8714c4a71861a87466ccee3c01e478295aaaf34..cb5fb5aac193d4d0acb030425a3f0781ea93fae8 100644 (file)
@@ -50,13 +50,37 @@ AC_DEFUN([GR_SET_MD_CPU],[
   AC_ARG_WITH(md-cpu,
        AC_HELP_STRING([--with-md-cpu=ARCH],[set machine dependent speedups (auto)]),
                [cf_with_md_cpu="$withval"],
-               [cf_with_md_cpu="$host_cpu"])
-
+               [
+  dnl see if the user has specified --host or --build, via 'cross_compiling'
+  if test "$cross_compiling" != no; then
+    dnl when cross-compiling, because the user specified it either via
+    dnl --target or --build, just keep the user's specs & hope for the best.
+    cf_with_md_cpu="$host_cpu"
+  else
+    dnl when the user didn't specify --target or --build, on Darwin 10
+    dnl (OSX 10.6.0 and .1) and GNU libtoool 2.2.6, 'configure' doesn't
+    dnl figure out the CPU type correctly, so do it by hand here using
+    dnl the sizeof (void*): if 4 then use i386, and otherwise use x86_64.
+    case "$host_os" in
+     *darwin*10*)
+      AC_CHECK_SIZEOF(void*)
+      if test "$ac_cv_sizeof_voidp" = 4; then
+       cf_with_md_cpu="i386"
+      else
+       cf_with_md_cpu="x86_64"
+      fi
+      ;;
+     *)
+      cf_with_md_cpu="$host_cpu"
+      ;;
+    esac
+  fi
+  ])
   case "$cf_with_md_cpu" in
    x86 | i[[3-7]]86)   MD_CPU=x86      MD_SUBCPU=x86 ;;
    x86_64)             MD_CPU=x86      MD_SUBCPU=x86_64 ;;
    powerpc*)            MD_CPU=powerpc ;;
-   arm)
+   arm*)
        _FIND_ARM_ISA
        if test $is_armv5 = yes; then MD_CPU=armv5;
        elif test $is_armv7_a = yes; then MD_CPU=armv7_a;