Documentation Source Text

COMPILE_OPTION {SQLITE_MAX_MMAP_SIZE=<i>N</i>} {
  This macro sets a hard upper bound on the amount of address space that
  can be used by any single database for memory-mapped I/O.
  Setting this value to 0 completely disables memory-mapped I/O and
  causes logic associated with memory-mapped I/O to be omitted from the
  build.  This option does change the default memory-mapped I/O address
  space size (set by [SQLITE_DEFAULT_MMAP_SIZE] or
  sqlite3_config([SQLITE_CONFIG_MMAP_SIZE])) or the
  run-time memory-mapped I/O address space size (set by
  sqlite3_file_control([SQLITE_FCNTL_MMAP_SIZE])) or
  [PRAGMA mmap_size]) as long as those other settings are less than the
  maximum value defined here.
}

COMPILE_OPTION {SQLITE_MAX_SCHEMA_RETRY=<i>N</i>} {
  Whenever the database schema changes, prepared statements are automatically
  reprepared to accommodate the new schema.  There is a race condition here

<tcl>
  hd_fragment "omitfeatures"
  hd_keywords "omitfeatures"
</tcl>
<h2>1.6 Options To Omit Features</h2>

<p>The following options can used to 
[relfootprint | reduce the size of the compiled library]
by omitting unused features. This is probably only useful
in embedded systems where space is especially tight, as even with all
features included the SQLite library is relatively small. Don't forget
to tell your compiler to optimize for binary size! (the -Os option if
using GCC).  Telling your compiler to optimize for size usually has
a much larger impact on library footprint than employing any of these

}

COMPILE_OPTION {SQLITE_OMIT_WAL} {
  This option omits the "[write-ahead log]" (a.k.a. "[WAL]") capability.
}

COMPILE_OPTION {SQLITE_OMIT_WSD} {
  This options builds a version of the SQLite library that contains no
  Writable Static Data (WSD).  WSD is global variables and/or static
  variables.  Some platforms do not support WSD, and this option is necessary
  in order for SQLite to work those platforms.  

  Unlike other OMIT options which make the SQLite library smaller,
  this option actually increases the size of SQLite and makes it run
  a little slower.  Only use this option if SQLite is being built for an