** This function returns a human readable version string.
*/
const char *get_version(){
  static const char version[] = RELEASE_VERSION " " MANIFEST_VERSION " "
                                MANIFEST_DATE " UTC";
  return version;
}

/*
** This function returns a human readable version string based on 'describe'.
*/
const char *get_describe_version(){
#ifndef MANIFEST_DESCRIPTION
#define MANIFEST_DESCRIPTION MANIFEST_VERSION
#endif
#ifndef DESCRIPTION_DATE
#define DESCRIPTION_DATE MANIFEST_DATE
#endif
  static const char version[] = RELEASE_VERSION " " MANIFEST_DESCRIPTION " "
                                DESCRIPTION_DATE " UTC";
  return version;
}

/*
** This function populates a blob with version information.  It is used by
** the "version" command and "test-version" web page.  It assumes the blob
** passed to it is uninitialized; otherwise, it will leak memory.
*/
void fossil_version_blob(
  Blob *pOut,                 /* Write the manifest here */
  int bVerbose,               /* Non-zero for full information. */
  int bDescribe               /* Non-zero for describe information. */
){
#if defined(FOSSIL_ENABLE_TCL)
  int rc;
  const char *zRc;
#endif
  Stmt q;
  size_t pageSize = 0;
  blob_zero(pOut);
  blob_appendf(pOut, "This is fossil version %s\n", 
               bDescribe ? get_describe_version() : get_version());
  if( !bVerbose ) return;
  blob_appendf(pOut, "Compiled on %s %s using %s (%d-bit)\n",
               __DATE__, __TIME__, COMPILER_NAME, sizeof(void*)*8);
  blob_appendf(pOut, "Schema version %s\n", AUX_SCHEMA_MAX);
  fossil_get_page_size(&pageSize);
  blob_appendf(pOut, "Detected memory page size is %lu bytes\n",
               (unsigned long)pageSize);

  return version;
}


/*
** COMMAND: version
**
** Usage: %fossil version ?-v|--verbose? ?-d|--describe?
**
** Print the source code version number for the fossil executable.
** If the verbose option is specified, additional details will
** be output about what optional features this binary was compiled
** with
**
** Options:
**
**    -d|--describe      Show an extended description based on the latest
**                       tagged source code commit
**    -v|--verbose       Show additional details will about what optional
**                       features this binary was compiled with
*/
void version_cmd(void){
  Blob versionInfo;
  int verboseFlag = find_option("verbose","v",0)!=0;
  int describeFlag = find_option("describe","d",0)!=0;

  /* We should be done with options.. */
  verify_all_options();
  fossil_version_blob(&versionInfo, verboseFlag, describeFlag);
  fossil_print("%s", blob_str(&versionInfo));
}


/*
** WEBPAGE: version
**
** Show the version information for Fossil.
**
** Query parameters:
**
**    verbose       Show details
*/
void test_version_page(void){
  Blob versionInfo;
  int verboseFlag;
  int describeFlag;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  verboseFlag = PD("verbose", 0) != 0;
  describeFlag = PD("describe", 0) != 0;
  style_header("Version Information");
  style_submenu_element("Stat", "stat");
  fossil_version_blob(&versionInfo, verboseFlag, describeFlag);
  @ <pre>
  @ %h(blob_str(&versionInfo))
  @ </pre>
  style_finish_page();
}