1 files changed, 63 insertions, 0 deletions
diff --git a/volk/config/gr_set_md_cpu.m4 b/volk/config/gr_set_md_cpu.m4
new file mode 100644
index 000000000..56fd83bac
--- /dev/null
+++ b/volk/config/gr_set_md_cpu.m4
@@ -0,0 +1,63 @@
+dnl
+dnl Copyright 2003,2008 Free Software Foundation, Inc.
+dnl 
+dnl This file is part of GNU Radio
+dnl 
+dnl GNU Radio is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3, or (at your option)
+dnl any later version.
+dnl 
+dnl GNU Radio is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl 
+dnl You should have received a copy of the GNU General Public License
+dnl along with GNU Radio; see the file COPYING.  If not, write to
+dnl the Free Software Foundation, Inc., 51 Franklin Street,
+dnl Boston, MA 02110-1301, USA.
+dnl 
+
+AC_DEFUN([_TRY_ADD_ALTIVEC],
+[
+  LF_CHECK_CC_FLAG([-mabi=altivec -maltivec])
+  LF_CHECK_CXX_FLAG([-mabi=altivec -maltivec])
+])
+
+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"])
+
+  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 ;;
+   *)           	MD_CPU=generic ;;
+  esac
+
+  AC_ARG_ENABLE(altivec,
+    AC_HELP_STRING([--enable-altivec],[enable altivec on PowerPC (yes)]),
+    [ if test $MD_CPU = powerpc; then
+        case "$enableval" in
+          (no)  MD_CPU=generic ;;
+          (yes) _TRY_ADD_ALTIVEC ;;
+          (*) AC_MSG_ERROR([Invalid argument ($enableval) to --enable-altivec]) ;;
+        esac
+      fi],
+    [ if test $MD_CPU = powerpc; then _TRY_ADD_ALTIVEC fi])
+
+
+  AC_MSG_CHECKING([for machine dependent speedups])
+  AC_MSG_RESULT($MD_CPU)
+  AC_SUBST(MD_CPU)
+  AC_SUBST(MD_SUBCPU) 
+
+  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 "$MD_CPU" = "powerpc")
+  AM_CONDITIONAL(MD_CPU_generic, test "$MD_CPU" = "generic")
+])