Add a test for ggi

configure.ac

@@ -4411,15 +4411,19 @@ AC_ARG_ENABLE(ggi,
   [  --enable-ggi            GGI support (default disabled)])
 if test "${enable_ggi}" = "yes"
 then
-  VLC_ADD_PLUGIN([ggi])
-  VLC_ADD_LIBS([ggi],[-lggi])
-  AC_ARG_WITH(ggi,
-    [    --with-ggi=PATH       path to libggi],
-    [ if test "${with_ggi}" != "no" -a -n "${with_ggi}"
-      then
-        VLC_ADD_CPPFLAGS([ggi],[-I${with_ggi}/include])
-        VLC_ADD_LIBS([ggi],[-L${with_ggi}/lib])
-      fi ])
+  AC_CHECK_HEADER([ggi/ggi.h],[
+    VLC_ADD_PLUGIN([ggi])
+    VLC_ADD_LIBS([ggi],[-lggi])
+    AC_ARG_WITH(ggi,
+      [    --with-ggi=PATH       path to libggi],
+      [ if test "${with_ggi}" != "no" -a -n "${with_ggi}"
+        then
+          VLC_ADD_CPPFLAGS([ggi],[-I${with_ggi}/include])
+          VLC_ADD_LIBS([ggi],[-L${with_ggi}/lib])
+        fi ])
+    ],[
+       AC_MSG_ERROR([LibGGI development files can't be found])
+    ])
 fi
 
 dnl