Avoid including apr_general.h.

The MSVC Resource Compiler truncates macro names at char 31.
Since apr_general.h includes apr.h which in turn includes
system headers we get warnings or errors with the Resource
Compiler with newer system headers (VC10 and later) which
have macro names defined with more than 31 chars.
(backport from trunk r1499742)
Reviewed by: gsmith, sf

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1499855 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/include/ap_release.h b/include/ap_release.h
index bec8fc3e6c01f78df127b531d53c8e6bc08ac854..bc7754b0382e508e6fb25344904c849d30261b2c 100644 (file)
--- a/include/ap_release.h
+++ b/include/ap_release.h
@@ -22,8 +22,6 @@
 #ifndef AP_RELEASE_H
 #define AP_RELEASE_H
 
-#include "apr_general.h" /* stringify */
-
 #define AP_SERVER_COPYRIGHT \
   "Copyright 2013 The Apache Software Foundation."
 
@@ -58,6 +56,14 @@
 #endif
 #endif
 
+/* APR_STRINGIFY is defined here, and also in apr_general.h, so wrap it */
+#ifndef APR_STRINGIFY
+/** Properly quote a value as a string in the C preprocessor */
+#define APR_STRINGIFY(n) APR_STRINGIFY_HELPER(n)
+/** Helper macro for APR_STRINGIFY */
+#define APR_STRINGIFY_HELPER(n) #n
+#endif
+
 /* keep old macros as well */
 #define AP_SERVER_MAJORVERSION  APR_STRINGIFY(AP_SERVER_MAJORVERSION_NUMBER)
 #define AP_SERVER_MINORVERSION  APR_STRINGIFY(AP_SERVER_MINORVERSION_NUMBER)