case NONE for prefix expansion

git-svn-id: https://recordmydesktop.svn.sourceforge.net/svnroot/recordmydesktop/trunk@94 f606c939-3180-4ac9-a4b8-4b8779d57d0a

1 files changed, 20 insertions, 0 deletions

diff --git a/gtk-recordmydesktop/configure.ac b/gtk-recordmydesktop/configure.ac
index 6882640..5f08496 100644
--- a/gtk-recordmydesktop/configure.ac
+++ b/gtk-recordmydesktop/configure.ac
@@ -6,7 +6,27 @@ AM_INIT_AUTOMAKE(gtk-recordMyDesktop, 0.2.1-r1)
 AS_AC_EXPAND(LIBDIR, $libdir)
 AC_MSG_NOTICE(Storing library files in $LIBDIR)
 AC_SUBST(PYGTK_REQ, 2.4)
+
+#The following test is needed for the expansion bellow 
+if test "x$prefix" == "xNONE"; then
+    export prefix="/usr/local/"
+else 
+    echo "prefix set to $prefix"
+fi
+
+#this expansion is needed because in some cases the datadir expansion will
+#not give an absolute path but one based on the $prefix env variable.
+#This value gets directly in the rmdConfig.py file which will later fail 
+#if it has a value of ${prefix}/something. So it needs to know which was the prefix during
+#installation. And that's why the above test is needed. In case no prefix is given
+#we still have to insert the default to avoid a path of NONE/something. and NONE can't be 
+#replaced within the script since it is also a valid name for a directory.
+#also,this behavior doesn't affect already existing dist tarballs and probably has to do with
+#the environment that the autotools were used, to produce the tarballs
+#(both cases were noticed with v1.7 of autowhatever, but on different environments)  
+#did you really read this? If you are a packager, you must be a very responsible one!Congrats!
 AS_AC_EXPAND(PREFIX,$prefix) 
+
 AS_AC_EXPAND(DATADIR, "$datadir")
 AC_MSG_NOTICE(Storing data files in $DATADIR)