#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
# Copyright (C) 2010--2014 Olaf Bergmann <bergmann@tzi.org>
#
# This file is part of the CoAP library libcoap. Please see
# README for terms of use. 

AC_PREREQ([2.65])
AC_INIT([libcoap], [4.1.1])
AC_CONFIG_SRCDIR([coap.h])

# First check for Contiki build to quit configure before any other test
AC_ARG_WITH(contiki,
  [AS_HELP_STRING([--with-contiki],[build libcoap for the Contiki OS])],
  [cp -p Makefile.contiki Makefile
   cp -p config.h.contiki config.h
   AC_MSG_NOTICE([Contiki build prepared])
   exit 0], 
  [])

# Checks for programs.
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_RANLIB
AC_PATH_PROG(DOXYGEN, doxygen, [:])
AC_PATH_PROG(ETAGS, etags, [/bin/false])

AC_C_BIGENDIAN

# Checks for libraries.
AC_CHECK_LIB([coap], [coap_new_pdu])

AC_SEARCH_LIBS([gethostbyname], [nsl])
AC_SEARCH_LIBS([socket], [socket])

# configuration options that may change compile flags 
AC_ARG_WITH(debug,
  [AS_HELP_STRING([--without-debug],[disable all debug output and assertions])],
  [CPPFLAGS="${CPPFLAGS} -DNDEBUG"], 
  [])

AC_ARG_WITH(async,
  [AS_HELP_STRING([--without-async],[disable handling of asynchronous transactions and observe])],
  [CPPFLAGS="${CPPFLAGS} -DWITHOUT_ASYNC"], 
  [])

AC_ARG_WITH(block,
  [AS_HELP_STRING([--without-block],[disable block transfer])],
  [CPPFLAGS="${CPPFLAGS} -DWITHOUT_BLOCK"], 
  [])

AC_ARG_WITH(observe,
  [AS_HELP_STRING([--without-observe],[disable resource observation])],
  [CPPFLAGS="${CPPFLAGS} -DWITHOUT_OBSERVE"], 
  [])

AC_ARG_WITH(query-filter,
  [AS_HELP_STRING([--without-query-filter],[disable support for filters on /.well-known/core])],
  [CPPFLAGS="${CPPFLAGS} -DWITHOUT_QUERY_FILTER"], 
  [])

AC_ARG_WITH(tests,
  [AS_HELP_STRING([--with-tests],[enable unit tests (requires cunit)])],	
  [TESTS="tests"],
  [])

AC_ARG_WITH(shared,
  [AS_HELP_STRING([--with-shared],[build shared library])],	
  [BUILD_SO="BUILD_SO=1"],
  [])

# disambiguate between autoconf generated setups and contiki / lwip setups
# which use explicit config.h.* files
CPPFLAGS="${CPPFLAGS} -DWITH_POSIX"

# Checks for header files.
AC_CHECK_HEADERS([assert.h arpa/inet.h limits.h netdb.h netinet/in.h stdlib.h string.h strings.h sys/socket.h sys/time.h time.h unistd.h sys/unistd.h syslog.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T

# Checks for library functions.
AC_FUNC_MALLOC
AC_CHECK_FUNCS([memset select socket strcasecmp strrchr getaddrinfo strnlen])

AC_SUBST(TESTS)
AC_SUBST(BUILD_SO)

AC_CONFIG_HEADERS([config.h])

AC_CONFIG_FILES([Makefile
                 doc/Makefile
                 doc/Doxyfile
                 examples/Makefile
                 tests/Makefile])
AC_OUTPUT