test-many-klibcs: Delete build directory before building

Currently we clean the source directory.  That's probably worth
continuing to do, but in case I change the build configurations or
tools the build directory really needs to be cleaned too.

1 files changed, 1 insertions, 0 deletions

diff --git a/test-many-klibcs b/test-many-klibcs
index 7b052ef..4f44cb9 100755
--- a/test-many-klibcs
+++ b/test-many-klibcs
@@ -62,6 +62,7 @@ do_install() {
 clean() {
     echo "I: Cleaning"
     (cd ../klibc && git clean -d -f -x)
+    rm -rf "build/$gnuarch"
 }
 
 run_built() {