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[users/jgh/exim.git] / src / src / pcre / config.h

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+/* $Cambridge: exim/src/src/pcre/config.h,v 1.1 2004/10/07 13:04:13 ph10 Exp $ */
+
+/*************************************************
+*           config.h for PCRE for Exim           *
+*************************************************/
+
+/* The PCRE sources include config.h, which for a free-standing PCRE build gets
+set up by autoconf. For the embedded version in Exim, this file, which is 
+manually maintained, is used.
+
+The only configuration thing that matters for the PCRE library itself is
+whether the memmove() function exists or not. It should be present in all
+Standard C libraries, but is missing in SunOS4. PCRE expects autoconf to set
+HAVE_MEMMOVE to 1 in config.h when memmove() is present. If that is not set, it
+defines memmove() as a macro for bcopy().
+
+Exim works differently. It handles this case by defining memmove() as a macro 
+in its os.h-SunOS4 file. We interface this to PCRE by including the os.h file 
+here, and then defining HAVE_MEMOVE so that PCRE's code in internal.h leaves 
+things alone. */
+
+#include "../os.h"
+#define HAVE_MEMMOVE 1
+
+/* We also set up directly a number of parameters that, in the freestanding 
+PCRE, can be adjusted by "configure". */
+
+#define NEWLINE                 '\n'
+#define LINK_SIZE               2
+#define MATCH_LIMIT             10000000
+#define POSIX_MALLOC_THRESHOLD  10
+
+/* There is some stuff in the PCRE sources for compilation on non-Unix systems
+and non-ASCII systems. For Exim's purposes, just flatten it all. */
+
+#define EBCDIC 0
+#define EXPORT
+
+/* End */