configure.ac: stop automake to search for scripts in parent dirs

Automake will search for the helper scripts in the folder that
contains the current Makefile.am (typically '.'), then some of the
scripts will be also searched in '..' and '../..'.

If the parent folders '..' or '../..' of OpenOCD source code
contain a file named 'install.sh', then automake will use it and
will assume that the same folder should contains also 'ltmain.sh'.
This situation can either cause the build to fail or automake to
use incorrect helper scripts.

Force automake to only search for helper scripts in the current
directory.

Change-Id: I00bbd6bf9057c94cf5007e5ecda3fefd683481f5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Fixes: https://sourceforge.net/p/openocd/tickets/285/
Reviewed-on: http://openocd.zylin.com/5890
Tested-by: jenkins

diff --git a/configure.ac b/configure.ac
index 569816637ff853ae33a4d838fe25c550a93c2e0b..47a167e282e44baba8d78e21daa1c7acaba2b345 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2,6 +2,7 @@ AC_PREREQ(2.64)
 AC_INIT([openocd], [0.10.0+dev],
   [OpenOCD Mailing List <openocd-devel@lists.sourceforge.net>])
 AC_CONFIG_SRCDIR([src/openocd.c])
+AC_CONFIG_AUX_DIR([.])
 
 m4_include([config_subdir.m4])dnl