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authorJosé Bollo <jose.bollo@iot.bzh>2017-05-31 17:20:41 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2017-06-01 10:20:07 +0200
commit4dc768d67031aa99e2b885a0df7e643fdd1fa80c (patch)
tree8ee2e6a65733166576c6e7c1592c7dba73f2cf4e /include/afb/afb-binding.h
parentc9163ac24fa85f6792461790ceaeb919b2e53b45 (diff)
Add backward compatibility and remarks
Change-Id: Ia261e2d9efce399b210f834c1acb679215021edd Signed-off-by: José Bollo <jose.bollo@iot.bzh>
Diffstat (limited to 'include/afb/afb-binding.h')
-rw-r--r--include/afb/afb-binding.h27
1 files changed, 21 insertions, 6 deletions
diff --git a/include/afb/afb-binding.h b/include/afb/afb-binding.h
index b1830184..82f702ec 100644
--- a/include/afb/afb-binding.h
+++ b/include/afb/afb-binding.h
@@ -26,18 +26,33 @@
*
* Functions of bindings of afb-daemon are accessible by authorized clients
* through the apis module of afb-daemon.
- *
- * A binding is a shared library. This shared library must have at least one
- * exported symbol for being registered in afb-daemon.
- *
*/
#define AFB_BINDING_LOWER_VERSION 1
#define AFB_BINDING_UPPER_VERSION 2
-#define AFB_BINDING_DEFAULT_VERSION 1
#ifndef AFB_BINDING_VERSION
-#define AFB_BINDING_VERSION AFB_BINDING_DEFAULT_VERSION
+#define AFB_BINDING_VERSION 1
+#pragma GCC warning "\
+\n\
+\n\
+ AFB_BINDING_VERSION should be defined before including <afb/afb-binding.h>\n\
+ AFB_BINDING_VERSION defines the version of binding that you use.\n\
+ Currently, known versions are 1 or 2.\n\
+ Setting now AFB_BINDING_VERSION to 1 (version 1 by default)\n\
+ NOTE THAT VERSION 2 IS NOW RECOMMENDED!\n\
+ Consider to add one of the following define before including <afb/afb-binding.h>:\n\
+\n\
+ #define AFB_BINDING_VERSION 1\n\
+ #define AFB_BINDING_VERSION 2\n\
+\n\
+ Note that in some case it will enforce you to include <stdio.h>\n\
+"
+#include <stdio.h> /* old version side effect */
+#else
+# if AFB_BINDING_VERSION == 1
+# pragma GCC warning "Using binding version 1, consider to switch to version 2"
+# endif
#endif
#if AFB_BINDING_VERSION != 0