Fossil

    # search for the system SQLite once with -ldl, and once without. If
    # the library can only be found with $extralibs set to -ldl, then
    # the code below will append -ldl to LIBS.
    #
    foreach extralibs {{} {-ldl}} {

      # Locate the system SQLite by searching for sqlite3_open(). Then check
      # if sqlite3_create_window_function can be found as well. If we can find open() but
      # not create_window_function(), then the system SQLite is too old to link against
      # fossil.
      #
      if {[check-function-in-lib sqlite3_open sqlite3 $extralibs]} {
        if {![check-function-in-lib sqlite3_create_window_function sqlite3 $extralibs]} {
          user-error "system sqlite3 too old (require >= 3.25.0)"
        }

        # Success. Update symbols and return.
        #
        define USE_SYSTEM_SQLITE 1
        define-append LIBS -lsqlite3
        define-append LIBS $extralibs

<title>Change Log</title>

<a name='v2_7'></a>
<h2>Changes for Version 2.7 (2018-09-??)</h2>

  *  Add the [./alerts.md|email alerts] feature for commits, ticket
     changes, wiki changes, forum posts, and announcements.  This is
     still a work in progress.  It works, but it is not as easy to
     setup and use as it ought to be.
  *  Add the [./forum.wiki|discussion forum] feature.
  *  Add new user capabilities letters needed to support alerts and forum.
     Formerly, user capabilities were letters from &#91;a-z&#93;, but with the
     enhancements, the supply of lower case letters was exhausted.
     User capabilities are now letters in &#91;a-zA-Z0-9&#93;.
  *  The default skin is now responsive, providing better layout on
     small screens, including mobile devices.
  *  The default skin now includes a hamburger menu that is generated
     by the [/sitemap] page.
  *  The [/sitemap] and other list pages show as multiple columns if
     the viewing window is wide enough.
  *  There is an optional "js" file for each skin that can be used to
     hold javascript.  This file can be loaded by reference or can be
     included in the header or footer.
  *  Add the [./backoffice.md|backoffice].
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 10.0 to 11.0.
  *  Improvements to the "Security Audit" administration page
  *  Update the built-in SQLite to version 3.25.0.
  *  Add support for TLS 1.3, when compiled with OpenSSL 1.1.1.
  *  Some code and interfaces are in place to support sending and
     receiving email directly via SMTP, but this feature is not yet
     complete or ready for production use.

<a name='v2_6'></a>
<h2>Changes for Version 2.6 (2018-05-04)</h2>

  *  Fix a bug that was causing crashes while trying to clone the TCL
     repository.  This fix is the main reason for the current release.
  *  Added the new "Classic" timeline viewing mode.  "Classic" is the
     same as "Verbose" in the previous release.  The "Verbose" mode is
     now like "Compact" except the extra check-in details are shown by
     default.
  *  Add support for ETags:, Last-Modified:, and If-Modified-Since:
     cache control mechanisms.
  *  Enhance the [/help?cmd=/tarball|/tarball],
     [/help?cmd=/zip|/zip], and
     [/help?cmd=/sqlar|/sqlar] pages so that the checkin
     name to be downloaded can be expressed as part of the URI,
     and without the need for query parameters.
  *  On the [/help?cmd=/timeline|/timeline] webpage, add the days=N
     query parameter and enhance the ymd=DATE and yw=DATE query parameters
     to accept 'now' as an argument to show the latest day or week.
  *  In the web page that comes up in response to the
     [/help?cmd=all|fossil all ui] command, show the last modification
     time for each repository, and allow click-to-sort on the modification
     time column.
  *  In the tarball cache replacement algorithm, give extra weight to
     tarballs that have been accessed more than once.
  *  Additional defenses against web-based attacks.  There have not been
     any known vulnerabilities.  We are just being paranoid.
  *  Update the built-in SQLite to an alpha version of 3.24.0.

<a name='v2_5'></a>
<h2>Changes for Version 2.5 (2018-02-07)</h2>

  *  Numerous enhancements to the look and feel of the web interface.
     Especially:  Added separate "Modern", "Compact", "Verbose", and
     "Columnar" view options on timelines.
  *  Common display settings (such as the "view" option and the number
     of rows in a timeline) are held in a cookie and thus persist
     across multiple pages.
  *  Rework the skin editing process so that changes are implemented
     on one of nine /draft pages, evaluated, then merged back to the
     default.