build: use sh -e, remove autom4te.cache

sh -e (-x) will provide the same functionality as the run function
previously.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/autogen.sh b/autogen.sh
index 4989ed9..3b111ce 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -e
 
 include ()
 {
@@ -35,3 +35,4 @@ run ()
 
 [ "x$1" = "xdistrib" ] && include
 autoreconf -fi
+rm -Rf autom4te.cache