[longomatch] Fix build in OS X

[Andoni Morales Alastruey <amorales src gnome org>]

commit f797a879c0addaf406fdc8bc2c82d7d80da212f7
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Tue Sep 16 17:39:07 2014 +0200

    Fix build in OS X

 libcesarplayer/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libcesarplayer/Makefile.am b/libcesarplayer/Makefile.am
index 159173c..5697b59 100644
--- a/libcesarplayer/Makefile.am
+++ b/libcesarplayer/Makefile.am
@@ -7,6 +7,8 @@ AM_CPPFLAGS = \
        $(CESARPLAYER_CFLAGS)
 
 if OSTYPE_OS_X
+AM_CPPFLAGS += \
+       -x objective-c
 else
 AM_CPPFLAGS += \
        -x c