From ca43bbd027f5ae35e27583594da0664d58fa4aef Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Thu, 28 Jan 2010 02:47:38 +0000
Subject: added --with-pd= so you can set where the pd sources are

svn path=/trunk/externals/io/hidio/; revision=13111
---
 configure.ac | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 1212804..0c821e3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,9 +4,6 @@ AC_CONFIG_SRCDIR(hidio.c)
 AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE(1.9)
 
-PD_PATH=../../../pd
-CFLAGS="-DPD $CFLAGS -I$PD_PATH/src"
-
 case $host in
 *darwin*)
         MACOSX=yes
@@ -46,6 +43,27 @@ AC_SUBST(EXTENSION)
 
 AC_HEADER_STDC
 
+AC_ARG_WITH([pd],
+        [AS_HELP_STRING([--with-pd],
+           [location of pd sourcecode])], ,) 
+
+if test "z$with_pd" != "z"; then
+    if test "z${with_pd%%/*}" = "z" ; then
+        # it's an absolute path
+        if test -f $with_pd ; then
+	        PD_PATH=$with_pd
+        else
+	        AC_MSG_ERROR([The file \"$with_pd\" does not exist.])
+        fi
+    else
+        AC_MSG_ERROR([--with-pd requires an absolute path])
+    fi
+elif test -d ../../../pd; then
+	PD_PATH="../../../pd"
+fi
+AC_MSG_RESULT([checking for pd sourcecode... $PD_PATH])
+CFLAGS="-DPD $CFLAGS -I$PD_PATH/src"
+
 AC_ARG_ENABLE([debug],
     [AS_HELP_STRING([--enable-debug], [use debugging support])], 
         [debug=$enableval])
@@ -95,3 +113,7 @@ AS_IF([test x$universal = xyes], [
 	    AC_MSG_RESULT(
 To build a Universal Binary on Mac OS X run it like this: 
   ./configure --enable-universal --disable-dependency-tracking)])
+
+echo "
+Building using Pd headers in $PD_PATH/src
+"
-- 
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