1 files changed, 75 insertions, 0 deletions
diff --git a/macros/canonicalize-tools.m4 b/macros/canonicalize-tools.m4
new file mode 100644
index 0000000000..811825b538
--- /dev/null
+++ b/macros/canonicalize-tools.m4
@@ -0,0 +1,75 @@
+dnl
+dnl $Id$
+dnl
+dnl Set target tools
+dnl
+
+AC_DEFUN(RTEMS_HOST_AR,
+[AC_CHECK_TOOL(AR,ar,no)])
+
+AC_DEFUN(RTEMS_HOST_RANLIB,
+[AC_CHECK_TOOL(RANLIB,ranlib,:)])
+
+AC_DEFUN(RTEMS_GCC_PRINT,
+[
+    $1=`$CC --print-prog-name=$2`
+])
+
+AC_DEFUN(RTEMS_PATH_TOOL,
+[
+AC_MSG_CHECKING([target's $2])
+AC_CACHE_VAL(ac_cv_path_$1,:)
+AC_MSG_RESULT([$ac_cv_path_$1])
+
+if test -n "$ac_cv_path_$1"; then
+  dnl retrieve the value from the cache
+  $1=$ac_cv_path_$1
+else
+  dnl the cache was not set
+  if test -z "[$]$1" ; then
+    if test "$ac_cv_prog_gcc" = "yes"; then
+      # We are using gcc, ask it about its tool
+      # NOTE: Necessary if gcc was configured to use the target's 
+      # native tools or uses prefixes for gnutools (e.g. gas instead of as)
+      RTEMS_GCC_PRINT($1,$2)
+    fi
+  else
+    # The user set an environment variable.
+    # Check whether it is an absolute path, otherwise AC_PATH_PROG 
+    # will override the environment variable, which isn't what the user
+    # intends
+    AC_MSG_CHECKING([whether environment variable $1 is an absolute path])
+    case "[$]$1" in
+    /*) # valid
+      AC_MSG_RESULT("yes")
+    ;;
+    *)  # invalid for AC_PATH_PROG
+      AC_MSG_RESULT("no")
+      AC_MSG_ERROR([***]
+        [Environment variable $1 should either]
+	[be unset (preferred) or contain an absolute path])
+    ;;
+    esac
+  fi
+
+  AC_PATH_PROG($1,"$program_prefix"$2,$3)
+fi
+])
+
+AC_DEFUN(RTEMS_CANONICALIZE_TOOLS,
+[AC_REQUIRE([RTEMS_PROG_CC])dnl
+
+dnl FIXME: What shall be done if these tools are not available?
+  RTEMS_HOST_AR(AR,ar,no)
+  RTEMS_PATH_TOOL(AS,as,no)
+  RTEMS_PATH_TOOL(LD,ld,no)
+  RTEMS_PATH_TOOL(NM,nm,no)
+
+dnl special treatment of ranlib
+  RTEMS_HOST_RANLIB
+
+dnl NOTE: These may not be available if not using gnutools
+  AC_CHECK_TOOL(OBJCOPY,objcopy,no)
+  AC_CHECK_TOOL(SIZE,size,no)
+  AC_CHECK_TOOL(STRIP,strip,:)
+])