1dnl $Id: db3-check.m4,v 1.23 2010-04-12 14:28:48 franklahm Exp $
2dnl Autoconf macros to check for the Berkeley DB library
3
4dnl -- check header for minimum version and return version in
5dnl -- $atalk_cv_bdb_MAJOR and $atalk_cv_bdb_MINOR
6AC_DEFUN([NETATALK_BDB_HEADER],[
7    dnl check for header version
8    AC_MSG_CHECKING([$1/db.h version >= ${DB_MAJOR_REQ}.${DB_MINOR_REQ}.${DB_PATCH_REQ}])
9
10    atalk_cv_bdb_MAJOR=`grep DB_VERSION_MAJOR "$1/db.h" | cut -f 3`
11    atalk_cv_bdb_MINOR=`grep DB_VERSION_MINOR "$1/db.h" | cut -f 3`
12
13    if test $atalk_cv_bdb_MAJOR -gt $DB_MAJOR_REQ ; then
14        AC_MSG_RESULT([yes])
15        atalk_cv_bdbheader=yes
16    elif test $DB_MAJOR_REQ -gt $atalk_cv_bdb_MAJOR ; then
17        AC_MSG_RESULT([no])
18        atalk_cv_bdbheader=no
19    elif test $DB_MINOR_REQ -gt $atalk_cv_bdb_MINOR ; then
20        AC_MSG_RESULT([no])
21        atalk_cv_bdbheader=no
22    else
23        AC_MSG_RESULT([yes])
24        atalk_cv_bdbheader=yes
25    fi
26])
27
28dnl -- Try to link and run with lib with version taken from
29dnl -- $atalk_cv_bdb_MAJOR and $atalk_cv_bdb_MINOR
30AC_DEFUN([NETATALK_BDB_TRY_LINK],[
31    atalk_cv_bdb_version=no
32    maj=$atalk_cv_bdb_MAJOR
33    min=$atalk_cv_bdb_MINOR
34    atalk_cv_bdb_try_libs="db$maj$min db$maj.$min db-$maj$min db-$maj.$min db$maj-$maj.$min db"
35
36    for lib in $atalk_cv_bdb_try_libs ; do
37        LIBS="-l$lib $savedlibs"
38        AC_MSG_CHECKING([Berkeley DB library (-l$lib)])
39        AC_TRY_RUN([
40            #include <stdio.h>
41            #include <db.h>
42            int main(void) {
43                int major, minor, patch;
44                char *version_str;
45                version_str = db_version(&major, &minor, &patch);
46                if ((major*100 + minor*10 + patch) < (DB_MAJOR_REQ*100 + DB_MINOR_REQ*10 + DB_PATCH_REQ)) {
47                    printf("linking wrong library version (%d.%d.%d), ",major, minor, patch);
48                    return (2);
49                }
50                if ( major != DB_VERSION_MAJOR || minor != DB_VERSION_MINOR || patch != DB_VERSION_PATCH) {
51                    printf("header/library version mismatch (%d.%d.%d/%d.%d.%d), ",
52                        DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH, major, minor, patch);
53                    return (3);
54                }
55                printf("%d.%d.%d ... ",major, minor, patch);
56                return (0);
57            }
58        ],[
59            AC_MSG_RESULT(yes)
60            atalk_cv_bdb_version="yes"
61            atalk_cv_lib_db="-l$lib"
62            break
63        ],[
64            AC_MSG_RESULT(no)
65        ],[
66            bdblibs=`ls $bdblibdir/lib$lib.* 2>/dev/null`
67            for bdblib in $bdblibs ; do
68                echo "Testing for lib file $bdblib" >&AS_MESSAGE_LOG_FD
69                if test -f "$bdblib" ; then
70                    AC_MSG_RESULT([yes (cross-compiling)])
71                    atalk_cv_bdb_version="yes"
72                    atalk_cv_lib_db="-l$lib"
73                    break
74                fi
75            done
76            if test "x$atalk_cv_bdb_version" = "xyes" ; then
77                break
78            fi
79            AC_MSG_RESULT([no (cross-compiling)])
80        ])
81    done
82    LIBS="$savedlibs"
83])
84
85dnl -- This is called from configure
86AC_DEFUN([AC_PATH_BDB],[
87    trybdbdir=""
88    dobdbsearch=yes
89    bdb_search_dirs="/usr/local /usr"
90    search_subdirs="/ /db5 /db5.1 /db51 /db5.0 /db50 /db4.8 /db48 /db4.7 /db47 /db4.6 /db46 /db4"
91
92    bdbfound=no
93    savedcflags="$CFLAGS"
94    savedldflags="$LDFLAGS"
95    savedcppflags="$CPPFLAGS"
96    savedlibs="$LIBS"
97    saved_shlibpath_var=$shlibpath_var
98
99    dnl required BDB version: 4.6, because of cursor API change
100    DB_MAJOR_REQ=4
101    DB_MINOR_REQ=6
102    DB_PATCH_REQ=0
103
104    dnl make sure atalk_libname is defined beforehand
105    [[ -n "$atalk_libname" ]] || AC_MSG_ERROR([internal error, atalk_libname undefined])
106    saved_atalk_libname=$atalk_libname
107
108    dnl define the required BDB version
109    AC_DEFINE_UNQUOTED(DB_MAJOR_REQ, ${DB_MAJOR_REQ}, [Required BDB version, major])
110    AC_DEFINE_UNQUOTED(DB_MINOR_REQ, ${DB_MINOR_REQ}, [Required BDB version, minor])
111    AC_DEFINE_UNQUOTED(DB_PATCH_REQ, ${DB_PATCH_REQ}, [Required BDB version, patch])
112
113    AC_ARG_WITH(bdb,
114        [  --with-bdb=PATH         specify path to Berkeley DB installation[[auto]]],
115        if test "x$withval" = "xno"; then
116            dobdbsearch=no
117        elif test "x$withval" = "xyes"; then
118            dobdbsearch=yes
119        else
120            bdb_search_dirs="$withval"
121        fi
122    )
123
124    if test "x$dobdbsearch" = "xyes"; then
125        for bdbdir in $bdb_search_dirs; do
126            if test $bdbfound = "yes"; then
127                break;
128            fi
129            for subdir in ${search_subdirs}; do
130                AC_MSG_CHECKING([for Berkeley DB headers in ${bdbdir}/include${subdir}])
131                dnl -- First check the mere existence of the header
132                if test -f "${bdbdir}/include${subdir}/db.h" ; then
133                    AC_MSG_RESULT([yes])
134
135                    dnl -- Check if it meets minimun requirement, also return the version
136                    NETATALK_BDB_HEADER([${bdbdir}/include${subdir}])
137
138                    if test ${atalk_cv_bdbheader} != "no"; then
139                        bdblibdir="${bdbdir}/${atalk_libname}"
140                        bdbbindir="${bdbdir}/bin"
141
142                        CPPFLAGS="-I${bdbdir}/include${subdir} $CPPFLAGS"
143                        LDFLAGS="-L$bdblibdir $LDFLAGS"
144
145                        dnl -- Uses version set by NETATALK_BDB_HEADER to try to run
146                        dnl -- a conftest that checks that header/lib version match
147                        dnl -- $shlibpath_var is set by LIBTOOL, its value is
148                        dnl -- LD_LIBRARY_PATH on many platforms. This will be fairly
149                        dnl -- portable hopefully. Reference:
150                        dnl -- http://lists.gnu.org/archive/html/autoconf/2009-03/msg00040.html
151                        eval export $shlibpath_var=$bdblibdir
152                        NETATALK_BDB_TRY_LINK
153                        eval export $shlibpath_var=$saved_shlibpath_var
154
155                        if test x"${atalk_cv_bdb_version}" = x"yes"; then
156                            BDB_CFLAGS="-I${bdbdir}/include${subdir}"
157                            BDB_LIBS="-L${bdblibdir} ${atalk_cv_lib_db}"
158                            BDB_BIN="$bdbbindir"
159                            BDB_PATH="$bdbdir"
160                            bdbfound=yes
161                            break;
162                        fi
163
164                        dnl -- Search lib in "lib" too, as $atalk_libname might be set
165                        dnl -- to "lib64" or "lib/64" which would not be found above
166                        dnl -- if 64bit lib were installed in a dir named "lib"
167                        if test x"$atalk_libname" != x"lib" ; then
168                           bdblibdir="${bdbdir}/lib"
169                           bdbbindir="${bdbdir}/bin"
170
171                           CPPFLAGS="-I${bdbdir}/include${subdir} $CPPFLAGS"
172                           LDFLAGS="-L$bdblibdir $LDFLAGS"
173
174                           eval export $shlibpath_var=$bdblibdir
175                           NETATALK_BDB_TRY_LINK
176                           eval export $shlibpath_var=$saved_shlibpath_var
177
178                           if test x"${atalk_cv_bdb_version}" = x"yes"; then
179                              BDB_CFLAGS="-I${bdbdir}/include${subdir}"
180                              BDB_LIBS="-L${bdblibdir} ${atalk_cv_lib_db}"
181                              BDB_BIN="$bdbbindir"
182                              BDB_PATH="$bdbdir"
183                              bdbfound=yes
184                              break;
185                           fi
186                        fi
187                    fi
188                    CFLAGS="$savedcflags"
189                    LDFLAGS="$savedldflags"
190                    CPPFLAGS="$savedcppflags"
191                    LIBS="$savedlibs"
192                else
193                    AC_MSG_RESULT([no])
194                fi
195            done
196        done
197    fi
198
199    CFLAGS="$savedcflags"
200    LDFLAGS="$savedldflags"
201    CPPFLAGS="$savedcppflags"
202    LIBS="$savedlibs"
203    atalk_libname=$saved_atalk_libname
204
205    if test "x$bdbfound" = "xyes"; then
206        ifelse([$1], , :, [$1])
207    else
208        ifelse([$2], , :, [$2])     
209    fi
210
211    CFLAGS_REMOVE_USR_INCLUDE(BDB_CFLAGS)
212    LIB_REMOVE_USR_LIB(BDB_LIBS)
213    AC_SUBST(BDB_CFLAGS)
214    AC_SUBST(BDB_LIBS)
215    AC_SUBST(BDB_BIN)
216    AC_SUBST(BDB_PATH)
217])
218
219
220