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+# man-bdb.m4 serial 6
+dnl MAN_CHECK_BDB(WITH-DB, HEADERS, LIBS, [ACTION-IF-FOUND])
+dnl Helper to check Berkeley DB linkage when particular header files and
+dnl libraries are included.
+dnl Contributed by Duncan Simpson <dps@io.stargate.co.uk> and hacked into a
+dnl macro by Colin Watson.
+
+AC_DEFUN([_MAN_CHECK_BDB_HEADER_LIB], [dnl
+ if test "$db" != yes
+ then
+ AS_VAR_PUSHDEF([man_tr_bdb], [man_cv_bdb_header_$1_lib_$2])dnl
+ man_saved_LIBS="$LIBS"
+ LIBS="$LIBS -l$2"
+ AC_CACHE_CHECK([for dbopen from <$1> in -l$2], man_tr_bdb,
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <$1>]],
+ [[dbopen("foo", 0, 0, 0, (void *) 0)]])],
+ [AS_VAR_SET([man_tr_bdb], [yes])],
+ [AS_VAR_SET([man_tr_bdb], [no])])
+ ])
+ AS_VAR_IF([man_tr_bdb], [yes],
+ [$3
+ AC_DEFINE_UNQUOTED([BDB_H], [<$1>],
+ [Define if you have, and want to use, Berkeley database header files.])
+ AC_DEFINE_UNQUOTED([BTREE], [1],
+ [Define if you have, and want to use, the Berkeley database library.])
+ AC_SUBST([DBTYPE], [btree])
+ DBLIBS="-l$2"
+ db=yes],
+ [db=no])
+ LIBS="$man_saved_LIBS"
+ AS_VAR_POPDEF([man_tr_bdb])dnl
+ fi
+])
+
+AC_DEFUN([_MAN_CHECK_BDB_HEADER], [dnl
+ if test "$db" != yes
+ then
+ AC_CHECK_HEADERS([$1], [got=yes], [got=no])
+ if test "$got" = "yes"
+ then
+ m4_map_args_w([$2], [_MAN_CHECK_BDB_HEADER_LIB([$1], ], [, [$3])])
+ fi
+ fi
+])
+
+AC_DEFUN([MAN_CHECK_BDB], [dnl
+ man_bdb_requested=no
+ for trydb in $1
+ do
+ if test "$db" = "$trydb"
+ then
+ man_bdb_requested=yes
+ fi
+ done
+ if test "$db" = no || test "$man_bdb_requested" = yes
+ then
+ m4_map_args_w([$2], [_MAN_CHECK_BDB_HEADER(], [, [$3], [$4])])
+ fi[]dnl
+])# MAN_CHECK_BDB