Extend yesterday's patch making BLCKSZ and RELSEG_SIZE configurable to also

let XLOG_BLCKSZ and XLOG_SEG_SIZE be set via configure.  Per a proposal by
Mark Wong, though I thought it better to call the switches after "wal" rather
than "xlog".

2 files changed, 13 insertions, 20 deletions

diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index 608e75cd7b6..2314d819659 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -747,6 +747,18 @@
    first (like Motorola and SPARC, unlike Intel and VAX). */
 #undef WORDS_BIGENDIAN
 
+/* Size of a WAL file block. This need have no particular relation to BLCKSZ.
+   XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
+   XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
+   buffers, else direct I/O may fail. Changing XLOG_BLCKSZ requires an initdb.
+   */
+#undef XLOG_BLCKSZ
+
+/* XLOG_SEG_SIZE is the size of a single WAL file. This must be a power of 2
+   and larger than XLOG_BLCKSZ (preferably, a great deal larger than
+   XLOG_BLCKSZ). Changing XLOG_SEG_SIZE requires an initdb. */
+#undef XLOG_SEG_SIZE
+
 /* Number of bits in a file offset, on hosts where this is settable. */
 #undef _FILE_OFFSET_BITS
 
diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
index 050f5b876c2..b56902d6fab 100644
--- a/src/include/pg_config_manual.h
+++ b/src/include/pg_config_manual.h
@@ -6,30 +6,11 @@
  * for developers.	If you edit any of these, be sure to do a *full*
  * rebuild (and an initdb if noted).
  *
- * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.32 2008/05/02 01:08:27 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/pg_config_manual.h,v 1.33 2008/05/02 19:52:37 tgl Exp $
  *------------------------------------------------------------------------
  */
 
 /*
- * Size of a WAL file block.  This need have no particular relation to BLCKSZ.
- * XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,
- * XLOG_BLCKSZ must be a multiple of the alignment requirement for direct-I/O
- * buffers, else direct I/O may fail.
- *
- * Changing XLOG_BLCKSZ requires an initdb.
- */
-#define XLOG_BLCKSZ		8192
-
-/*
- * XLOG_SEG_SIZE is the size of a single WAL file.	This must be a power of 2
- * and larger than XLOG_BLCKSZ (preferably, a great deal larger than
- * XLOG_BLCKSZ).
- *
- * Changing XLOG_SEG_SIZE requires an initdb.
- */
-#define XLOG_SEG_SIZE	(16*1024*1024)
-
-/*
  * Maximum length for identifiers (e.g. table names, column names,
  * function names).  It must be a multiple of sizeof(int) (typically
  * 4).