AX_BERKELEY_DB([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
, 

2005-01-21

Vaclav Slavik <vaclav.slavik@matfyz.cz>

GPLWithACException
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts

cryp.to ac-archive's Installed Packages (released)

This macro tries to find Berkeley DB. It honors MINIMUM-VERSION if given.

If libdb is found, DB_HEADER and DB_LIBS variables are set and ACTION-IF-FOUND shell code is executed if specified. DB_HEADER is set to location of db.h header in quotes (e.g. "db3/db.h") and AC_DEFINE_UNQUOTED is called on it, so that you can type

    #include DB_HEADER

in your C/C++ code. DB_LIBS is set to linker flags needed to link against the library (e.g. -ldb3.1) and AC_SUBST is called on it.

AC_DEFUN([AX_BERKELEY_DB],
[
  old_LIBS="$LIBS"

  minversion=ifelse([$1], ,,$1)

  DB_HEADER=""
  DB_LIBS=""

  if test -z $minversion ; then
      minvermajor=0
      minverminor=0
      minverpatch=0
      AC_MSG_CHECKING([for Berkeley DB])
  else
      minvermajor=`echo $minversion | cut -d. -f1`
      minverminor=`echo $minversion | cut -d. -f2`
      minverpatch=`echo $minversion | cut -d. -f3`
      minvermajor=${minvermajor:-0}
      minverminor=${minverminor:-0}
      minverpatch=${minverpatch:-0}
      AC_MSG_CHECKING([for Berkeley DB >= $minversion])
  fi

  for version in "" 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.6 3.5 3.4 3.3 3.2 3.1 ; do

    if test -z $version ; then
        db_lib="-ldb"
        try_headers="db.h"
    else
        db_lib="-ldb-$version"
        try_headers="db$version/db.h db`echo $version | sed -e 's,\..*,,g'`/db.h"
    fi

    LIBS="$old_LIBS $db_lib"

    for db_hdr in $try_headers ; do
        if test -z $DB_HEADER ; then
            AC_LINK_IFELSE(
                [AC_LANG_PROGRAM(
                    [
                        #include <${db_hdr}>
                    ],
                    [
                        #if !((DB_VERSION_MAJOR > (${minvermajor}) || \
                              (DB_VERSION_MAJOR == (${minvermajor}) && \
                                    DB_VERSION_MINOR > (${minverminor})) || \
                              (DB_VERSION_MAJOR == (${minvermajor}) && \
                                    DB_VERSION_MINOR == (${minverminor}) && \
                                    DB_VERSION_PATCH >= (${minverpatch}))))
                            #error "too old version"
                        #endif

                        DB *db;
                        db_create(&db, NULL, 0);
                    ])],
                [
                    AC_MSG_RESULT([header $db_hdr, library $db_lib])

                    DB_HEADER="$db_hdr"
                    DB_LIBS="$db_lib"
                ])
        fi
    done
  done

  LIBS="$old_LIBS"

  if test -z $DB_HEADER ; then
    AC_MSG_RESULT([not found])
    ifelse([$3], , :, [$3])
  else
    AC_DEFINE_UNQUOTED(DB_HEADER, ["$DB_HEADER"])
    AC_SUBST(DB_LIBS)
    ifelse([$2], , :, [$2])
  fi
])