Merge branch 'upstream' into dfsg-orig

[debian/gnuradio] / config / gr_set_md_cpu.m4

diff --git a/config/gr_set_md_cpu.m4 b/config/gr_set_md_cpu.m4
index 56fd83bacd84ef4acdf2de7060bb2b585ebb4e2b..cb5fb5aac193d4d0acb030425a3f0781ea93fae8 100644 (file)
--- a/config/gr_set_md_cpu.m4
+++ b/config/gr_set_md_cpu.m4
@@ -1,5 +1,5 @@
 dnl
-dnl Copyright 2003,2008 Free Software Foundation, Inc.
+dnl Copyright 2003,2008,2009 Free Software Foundation, Inc.
 dnl 
 dnl This file is part of GNU Radio
 dnl 
@@ -25,17 +25,67 @@ AC_DEFUN([_TRY_ADD_ALTIVEC],
   LF_CHECK_CXX_FLAG([-mabi=altivec -maltivec])
 ])
 
+AC_DEFUN([_FIND_ARM_ISA],
+[
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+  [[#ifndef __ARM_ARCH_5__
+    #error "Not armv5"
+    #endif
+  ]])],
+    [is_armv5=yes],
+    [is_armv5=no])
+
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+  [[#ifndef __ARM_ARCH_7A__
+    #error "Not armv7-a"
+    #endif
+  ]])],
+    [is_armv7_a=yes],
+    [is_armv7_a=no])
+
+])
+
 AC_DEFUN([GR_SET_MD_CPU],[
   AC_REQUIRE([AC_CANONICAL_HOST])
   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*)
+       _FIND_ARM_ISA
+       if test $is_armv5 = yes; then MD_CPU=armv5;
+       elif test $is_armv7_a = yes; then MD_CPU=armv7_a;
+       else MD_CPU=generic; fi
+       ;;
    *)                  MD_CPU=generic ;;
   esac
 
@@ -59,5 +109,7 @@ AC_DEFUN([GR_SET_MD_CPU],[
   AM_CONDITIONAL(MD_CPU_x86,     test "$MD_CPU" = "x86")
   AM_CONDITIONAL(MD_SUBCPU_x86_64,  test "$MD_SUBCPU" = "x86_64")
   AM_CONDITIONAL(MD_CPU_powerpc, test "$MD_CPU" = "powerpc")
+  AM_CONDITIONAL(MD_CPU_armv5, test "$MD_CPU" = "armv5")
+  AM_CONDITIONAL(MD_CPU_armv7_a, test "$MD_CPU" = "armv7_a")
   AM_CONDITIONAL(MD_CPU_generic, test "$MD_CPU" = "generic")
 ])