AC_PREREQ(2.50)
-
-AC_INIT
+AC_INIT([onak],[0.3.0],[noodles-onak@earth.li])
+AC_CONFIG_SRCDIR(onak.c)
AC_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_C_BIGENDIAN
+AC_ARG_ENABLE(backend,AC_HELP_STRING([--enable-backend=<backend>],[Choose the backend database to use. Defaults to db3.]), [], [enable_backend="db3"])
+
+AC_MSG_CHECKING([which key database backend to use])
+AC_MSG_RESULT([$enable_backend])
+AC_CHECK_FILE([$srcdir/keydb_$enable_backend.c], ,AC_MSG_ERROR([non existent key database backend $enable_backend]))
+
+if test "x$enable_backend" = "xdb3"
+then
+ AC_CHECK_LIB(db3, db_env_create,,
+ AC_MSG_ERROR([cannot compile DB3 backend without libdb3]))
+else if test "x$enable_backend" = "xpg"
+then
+ AC_CHECK_LIB(pq, PQsetdbLogin,,
+ AC_MSG_ERROR([cannot compile PostgreSQL backend without libpq]))
+fi
+fi
+
+AC_SUBST(DBTYPE, $enable_backend)
+
AC_CONFIG_FILES(Makefile)
AC_OUTPUT