[banshee] autogen.sh: call `make distclean` under the hood (bgo#741530)

[Andrés Aragoneses <aaragoneses src gnome org>]

commit 2dc66b1e6e8a08467fe8591651724cb1f101deb4
Author: Andrés G. Aragoneses <knocte gmail com>
Date:   Sat Aug 8 18:33:09 2015 +0200

    autogen.sh: call `make distclean` under the hood (bgo#741530)
    
    As a sanity-check measure, it's useful that autogen.sh calls
    `make distclean` in case there are binaries of a previous
    compilation that could cause issues.
    
    In particular, bgo#741530 is actually a consequence of this:
    a developer (yours truly) switching to a stable branch to
    run a different version of banshee, but forgetting to remove
    the binaries from master-branch that were generated before,
    therefore mixing assemblies from one branch and the other.
    
    If this command fails because there were no makefiles at all
    (which is what happens at a clean checkout) then it will of
    course silently fail.

 autogen.sh |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 34cfe7e..0aec574 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -53,6 +53,10 @@ test -z "$srcdir" && srcdir=.
        error "Directory \"$srcdir\" does not look like the top-level $PROJECT directory"
 }
 
+
+# in case there are binaries from a previous compilation
+make distclean 2>/dev/null
+
 # MacPorts on OS X only seems to have glibtoolize
 WHICHLIBTOOLIZE=$(which libtoolize || which glibtoolize)
 if [ x"$WHICHLIBTOOLIZE" == x"" ]; then