package/ola: fix build against google.protobuf

configure: do not check for google.protobuf

The check for google.protobuf is inherently flawed for cross-compilation,

as it uses the host Python to check for target modules.

In Buildroot, our dependencies ensures that google.protobuf is present

by the time we configure and build ola, so we can just skip the test

altogether.

We don't need to fake the result of the test: it is used nowhere; the

test is only here to fail or succeed.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff -durN ola-0.8.32.orig/configure.ac ola-0.8.32/configure.ac

--- ola-0.8.32.orig/configure.ac	2013-09-29 19:46:48.000000000 +0200

+++ ola-0.8.32/configure.ac	2014-01-09 19:43:55.342044336 +0100

@@ -530,7 +530,11 @@

 if test "${enable_python_libs}" = "yes"; then

  AM_PATH_PYTHON(2.6)

- AX_PYTHON_MODULE("google.protobuf", "fatal")

+# AX_PYTHON_MODULE is inherently broken for cross-compilation

+# since it executes the host Python to check for target modules.

+# In Buildroot, we do not need to check for google.protobuf,

+# since our dependencies ensure it is available.

+# AX_PYTHON_MODULE("google.protobuf", "fatal")

 fi

 # Maybe build the logic sniffer tools

OLA_LICENSE_FILES = LICENCE GPL LGPL

OLA_INSTALL_STAGING = YES

# We modify configure.ac, so we need to autoreconf

OLA_AUTORECONF = YES

# util-linux provides uuid lib

OLA_DEPENDENCIES = protobuf util-linux host-bison host-flex