File libtunepimp-acinclude.diff of Package libtunepimp

--- acinclude.m4
+++ acinclude.m4        2005/01/13 17:07:58
@@ -0,0 +1,41 @@
+dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
+dnl example
+dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
+dnl will set SYSCONFDIR to /usr/local/etc
+
+dnl written by thomas vander stichele
+
+AC_DEFUN(AS_AC_EXPAND,
+[
+  EXP_VAR=[$1]
+  FROM_VAR=[$2]
+
+  dnl first expand prefix and exec_prefix if necessary
+  prefix_save=$prefix
+  if test "x$prefix" = "xNONE"; then
+    prefix=/usr/local
+  fi
+  exec_prefix_save=$exec_prefix
+  if test "x$exec_prefix" = "xNONE"; then
+    if test "x$prefix_save" = "xNONE"; then
+      exec_prefix=/usr/local
+    else
+      exec_prefix=$prefix
+    fi
+  fi
+
+  full_var="$FROM_VAR"
+  dnl loop until it doesn't change anymore
+  while true; do
+    new_full_var="`eval echo $full_var`"
+    if test "x$new_full_var" = "x$full_var"; then break; fi
+    full_var=$new_full_var
+  done
+
+  dnl clean up
+  full_var=$new_full_var
+  [$1]=$full_var
+  prefix=$prefix_save
+  exec_prefix=$exec_prefix_save
+])
+