1 files changed, 120 insertions, 0 deletions
diff --git a/m4/gas.m4 b/m4/gas.m4
new file mode 100644
index 000000000..925c99092
--- /dev/null
+++ b/m4/gas.m4
@@ -0,0 +1,120 @@
+dnl Copyright 2007 xine project
+dnl Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007
+dnl Free Software Foundation, Inc.
+dnl Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+dnl
+dnl This file is free software; the Free Software Foundation gives
+dnl unlimited permission to copy and/or distribute it, with or without
+dnl modifications, as long as this notice is preserved.
+
+dnl AC_PROG_AS
+dnl ----------
+dnl find the pathname to the GNU or non-GNU assembler
+AC_DEFUN([CC_PROG_AS],
+[AC_ARG_WITH([gnu-as],
+    [AC_HELP_STRING([--with-gnu-as],
+	[assume the C compiler uses GNU as @<:@default=no@:>@])],
+    [test "$withval" = no || with_gnu_as=yes],
+    [with_gnu_as=no])
+AC_REQUIRE([AC_PROG_SED])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+cc_prog=as
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=as gives a path.
+  AC_MSG_CHECKING([for as used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=as) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=as) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of as
+      ac_prog=`echo $ac_prog| $SED 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`echo $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$AS" && AS="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=as
+    ;;
+  *)
+    # If it is relative, then search for the first as in PATH.
+    with_gnu_as=unknown
+    ;;
+  esac
+elif test "$with_gnu_as" = yes; then
+  AC_MSG_CHECKING([for GNU as])
+else
+  AC_MSG_CHECKING([for non-GNU as])
+fi
+AC_CACHE_VAL(cc_cv_path_AS,
+[if test -z "$AS"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_AS="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU as.  I'd rather use --version,
+      # but apparently some variants of GNU as only accept -v.
+      # Break only if it was the GNU/non-GNU as that we prefer.
+      case `"$cc_cv_path_AS" -v 2>&1 </dev/null` in
+      dnl Apple's assembler reports itself as GNU as 1.38;
+      dnl but it doesn't provide the functions we need.
+      *Apple*)
+        test "$with_gnu_as" != yes && break
+	;;
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_as" != no && break
+	;;
+      *)
+	test "$with_gnu_as" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  cc_cv_path_AS="$AS" # Let the user override the test with a path.
+fi])
+AS="$cc_cv_path_AS"
+if test -n "$AS"; then
+  AC_MSG_RESULT($AS)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$AS" && AC_MSG_ERROR([no acceptable as found in \$PATH])
+CC_PROG_AS_GNU
+])
+
+
+dnl AC_PROG_AS_GNU
+dnl --------------
+AC_DEFUN([CC_PROG_AS_GNU],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_CACHE_CHECK([if the assembler ($AS) is GNU as], cc_cv_prog_gnu_as,
+[# I'd rather use --version here, but apparently some GNU as's only accept -v.
+case `$AS -v 2>&1 </dev/null` in
+dnl Apple's assembler reports itself as GNU as 1.38;
+dnl but it doesn't provide the functions we need.
+*Apple*)
+  cc_cv_prog_gnu_as=no
+  ;;
+*GNU* | *'with BFD'*)
+  cc_cv_prog_gnu_as=yes
+  ;;
+*)
+  cc_cv_prog_gnu_as=no
+  ;;
+esac])
+with_gnu_as=$cc_cv_prog_gnu_as
+])