Clean configure when before invoking autoconf

Autoconf doesn't remake configure if creation time on configure.in
is older than the previous version.

This caused problems on windows so always recreate configure when
running ./otp_build autoconf

1 files changed, 5 insertions, 0 deletions

diff --git a/otp_build b/otp_build
index d0f75aff71..175c5fbcfe 100755
--- a/otp_build
+++ b/otp_build
@@ -310,6 +310,11 @@ do_autoconf ()
 		echo "=== cleaning $d/autom4te.cache"
 		rm -f "$d"/autom4te.cache/*
 	    }
+	    [ ! -f "$d/configure" ] || {
+		echo "=== cleaning $d/configure"
+		rm -f "$d"/configure
+	    }
+
 	    echo "=== running autoconf in $d"
 	    ( cd "$d" && autoconf ) || exit 1
 	    chdr=`cat "$file" | sed -n "s|.*\(AC_CONFIG_HEADER\).*|\1|p"`