BUILD: compat: always set _POSIX_VERSION to ease comparisons

Sometimes we need to compare it to known versions, let's make sure it's
always defined. We set it to zero if undefined so that it cannot match
any comparison.

diff --git a/include/haproxy/compat.h b/include/haproxy/compat.h
index ad91b901c58dff92f309ca9d0aa4cbc93f599808..39f7af7a69d6a3f898e1951df8e59f7f27f5442f 100644 (file)
--- a/include/haproxy/compat.h
+++ b/include/haproxy/compat.h
@@ -120,6 +120,11 @@ typedef struct { } empty_t;
 })
 #endif
 
+/* always set a _POSIX_VERSION if there isn't any, in order to ease compares */
+#ifndef _POSIX_VERSION
+# define _POSIX_VERSION 0
+#endif
+
 /* this is for libc5 for example */
 #ifndef TCP_NODELAY
 #define TCP_NODELAY     1