#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
AC_PREREQ(2.61)
AC_INIT(aria2c, 0.15.1+2, t-tujikawa@users.sourceforge.net)
AC_CANONICAL_HOST
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE()
AM_PATH_CPPUNIT(1.10.2)
AC_CONFIG_SRCDIR([src/Socket.h])
AC_CONFIG_HEADERS([config.h])

case "$target" in
  *mingw*|*cygwin*)
    WINSOCK_LIBS="-lws2_32 -lpthread"
    AC_SUBST(WINSOCK_LIBS)
    ;;
esac

AC_DEFINE_UNQUOTED([TARGET], ["$target"], [Define target-type])

# Set localedir
localedir=${datadir}/locale
AC_SUBST(localedir)

# Checks for arguments.
ARIA2_ARG_WITH([gnutls])
ARIA2_ARG_WITH([openssl])
ARIA2_ARG_WITH([libxml2])
ARIA2_ARG_WITH([libexpat])
ARIA2_ARG_WITH([libares])
ARIA2_ARG_WITH([libcares])
ARIA2_ARG_WITH([libz])

ARIA2_ARG_ENABLE([bittorrent])
ARIA2_ARG_ENABLE([metalink])
ARIA2_ARG_ENABLE([epoll])

# Checks for programs.
AC_PROG_CXX
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MKDIR_P
AC_PROG_RANLIB
AC_PROG_YACC

# Setting language choice
AC_LANG([C++])

# Check for GNU library
AC_GNU_SOURCE

# Enable system extensions
AC_USE_SYSTEM_EXTENSIONS

# Checks for libraries.
if test "x$with_libxml2" = "xyes"; then
  AM_PATH_XML2([2.6.24], [have_libxml2=yes])
  if test "x$have_libxml2" = "xyes"; then
    AC_DEFINE([HAVE_LIBXML2], [1], [Define to 1 if you have libxml2.])
  fi
fi

if test "x$with_libexpat" = "xyes" && test "x$have_libxml2" != "xyes"; then
  AM_PATH_LIBEXPAT
fi

if test "x$with_gnutls" = "xyes"; then
  AM_PATH_LIBGNUTLS([1.2.9], [have_libgnutls=yes])
  if test "x$have_libgnutls" = "xyes"; then
    AC_DEFINE([HAVE_LIBGNUTLS], [1], [Define to 1 if you have libgnutls.])
  fi
fi

if test "x$have_libgnutls" = "xyes"; then
  AM_PATH_LIBGCRYPT([1.2.2], [have_libgcrypt=yes])
  if test "x$have_libgcrypt" = "xyes"; then
    AC_DEFINE([HAVE_LIBGCRYPT], [1], [Define to 1 if you have libgcrypt.])
  fi
fi

if test "x$with_openssl" = "xyes" && test "x$have_libgnutls" != "xyes"; then
  AM_PATH_OPENSSL
fi

if test "x$with_libcares" = "xyes"; then
  AM_PATH_LIBCARES
fi

if test "x$have_libcares" = "x"; then
  if test "x$with_libares" = "xyes"; then
    AM_PATH_LIBARES
  fi
fi

# Check availability of libz
if test "x$with_libz" = "xyes"; then
  AM_PATH_LIBZ
fi

# Define variables based on the result of the checks for libraries.
if test "x$have_libgnutls" = "xyes" || test "x$have_openssl" = "xyes"; then
  AC_DEFINE([ENABLE_SSL], [1], [Define to 1 if ssl support is enabled.])
fi

if test "x$have_libgcrypt" = "xyes" || test "x$have_openssl" = "xyes"; then
  AC_DEFINE([ENABLE_MESSAGE_DIGEST], [1],
            [Define to 1 if message digest support is enabled.])
  AM_CONDITIONAL([ENABLE_MESSAGE_DIGEST], true)
  enable_message_digest=yes
else
  AM_CONDITIONAL([ENABLE_MESSAGE_DIGEST], false)
fi

if test "x$enable_bittorrent" = "xyes" &&
   test "x$enable_message_digest" = "xyes"; then
  AC_DEFINE([ENABLE_BITTORRENT], [1],
            [Define to 1 if BitTorrent support is enabled.])
  AM_CONDITIONAL([ENABLE_BITTORRENT], true)
else
  enable_bittorrent=no
  AM_CONDITIONAL([ENABLE_BITTORRENT], false)
fi

if (test "x$have_libxml2" = "xyes" || test "x$have_libexpat" = "xyes") &&
   test "x$enable_metalink" = "xyes"; then
  AC_DEFINE([ENABLE_METALINK], [1],
            [Define to 1 if Metalink support is enabled.])
  AM_CONDITIONAL([ENABLE_METALINK], true)
else
  enable_metalink=no
  AM_CONDITIONAL([ENABLE_METALINK], false)
fi

AM_CONDITIONAL([ENABLE_LIBXML2],
          [test "x$enable_metalink" = "xyes" && test "x$have_libxml2" = "xyes"])
AM_CONDITIONAL([ENABLE_LIBEXPAT],
         [test "x$enable_metalink" = "xyes" && test "x$have_libexpat" = "xyes"])

if test "x$have_libcares" = "xyes" || test "x$have_libares" = "xyes"; then
  AC_DEFINE([ENABLE_ASYNC_DNS], [1],
            [Define to 1 if asynchronous DNS support is enabled.])
  AM_CONDITIONAL([ENABLE_ASYNC_DNS], true)
else
  AM_CONDITIONAL([ENABLE_ASYNC_DNS], false)
fi

# Set conditional for libz
AM_CONDITIONAL([HAVE_LIBZ], [test "x$have_libz" = "xyes"])

# Checks for header files.
AC_FUNC_ALLOCA
AC_HEADER_STDC
AC_CHECK_HEADERS([winsock2.h \
                  ws2tcpip.h \
                  argz.h \
                  arpa/inet.h \
                  fcntl.h \
                  float.h \
                  inttypes.h \
                  io.h \
                  langinfo.h \
                  libintl.h \
                  limits.h \
                  locale.h \
                  malloc.h \
                  netdb.h \
                  netinet/in.h \
                  stddef.h \
                  stdint.h \
                  stdio_ext.h \
                  stdlib.h \
                  string.h \
                  strings.h \
                  sys/ioctl.h \
                  sys/param.h \
                  sys/socket.h \
                  sys/time.h \
                  termios.h \
                  unistd.h \
                  wchar.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_C_INLINE
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_INT8_T
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_HEADER_TIME
AC_STRUCT_TM
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T
AC_C_VOLATILE
AC_CHECK_TYPES([ptrdiff_t])

AC_SYS_LARGEFILE

# Checks for library functions.
AM_GNU_GETTEXT
AM_GNU_GETTEXT_VERSION([0.17])
AC_FUNC_ERROR_AT_LINE
AC_PROG_GCC_TRADITIONAL

case "$target" in
	*mingw*)
		;;
	*)
		AC_FUNC_MALLOC
		AC_FUNC_REALLOC
		;;
esac

AC_FUNC_MEMCMP
AC_FUNC_MKTIME
AC_FUNC_MMAP
AC_FUNC_SELECT_ARGTYPES
AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_FUNC_STRFTIME
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([__argz_count \
                __argz_next \
                __argz_stringify \
                atexit \
                daemon \
                ftruncate \
                getcwd \
                gethostbyaddr \
                gethostbyname \
                getpagesize \
                inet_ntoa \
                memchr \
                memmove \
                mempcpy \
                memset \
                mkdir \
                munmap \
                nl_langinfo \
                posix_memalign \
                putenv \
                rmdir \
                select \
                setlocale \
                sleep \
                socket \
                stpcpy \
                strcasecmp \
                strchr \
                strcspn \
                strdup \
                strerror \
                strncasecmp \
                strstr \
                strtol \
                strtoul \
                strtoull \
                tzset \
                unsetenv \
                usleep])

if test "x$enable_epoll" = "xyes"; then
  AC_CHECK_FUNCS([epoll_create])
fi

AC_CHECK_FUNCS([asctime_r],
	[AM_CONDITIONAL([HAVE_ASCTIME_R], true)],
	[AM_CONDITIONAL([HAVE_ASCTIME_R], false)])
AC_CHECK_FUNCS([basename],
	[AM_CONDITIONAL([HAVE_BASENAME], true)],
	[AM_CONDITIONAL([HAVE_BASENAME], false)])
AC_CHECK_FUNCS([gai_strerror],
	[AM_CONDITIONAL([HAVE_GAI_STRERROR], true)],
 	[AM_CONDITIONAL([HAVE_GAI_STRERROR], false)])
AC_CHECK_FUNCS([getaddrinfo],
	[AM_CONDITIONAL([HAVE_GETADDRINFO], true)],
	[AM_CONDITIONAL([HAVE_GETADDRINFO], false)])
AC_CHECK_FUNCS([gettimeofday],
	[AM_CONDITIONAL([HAVE_GETTIMEOFDAY], true)],
	[AM_CONDITIONAL([HAVE_GETTIMEOFDAY], false)])
AC_CHECK_FUNCS([inet_aton],
	[AM_CONDITIONAL([HAVE_INET_ATON], true)],
	[AM_CONDITIONAL([HAVE_INET_ATON], false)])
AC_CHECK_FUNCS([localtime_r],
	[AM_CONDITIONAL([HAVE_LOCALTIME_R], true)],
	[AM_CONDITIONAL([HAVE_LOCALTIME_R], false)])
AC_CHECK_FUNCS([strptime],
	[AM_CONDITIONAL([HAVE_STRPTIME], true)],
	[AM_CONDITIONAL([HAVE_STRPTIME], false)])
AC_CHECK_FUNCS([timegm],
	[AM_CONDITIONAL([HAVE_TIMEGM], true)],
	[AM_CONDITIONAL([HAVE_TIMEGM], false)])

case "$target" in
  *mingw*)
    dnl defined in ws2tcpip.h, but only if _WIN32_WINNT >= 0x0501
    AM_CONDITIONAL([HAVE_GETADDRINFO], true)
    dnl defined in ws2tcpip.h, but missing in C:\mingw\lib\libws2_32.a
    AM_CONDITIONAL([HAVE_GAI_STRERROR], false)
    ;;
esac

AC_CONFIG_FILES([Makefile
		src/Makefile
		test/Makefile
		po/Makefile.in
		m4/Makefile
		intl/Makefile
		lib/Makefile
		doc/Makefile])
AC_OUTPUT

echo " "
echo "Build:          $build"
echo "Target:         $target"
echo "Install prefix: $prefix"
echo "CFLAGS:         $CFLAGS"
echo "CPPFLAGS:       $CPPFLAGS"
echo "LDFLAGS:        $LDFLAGS"
echo "LIBS:           $LIBS"
echo "GnuTLS:         $have_libgnutls"
echo "OpenSSL:        $have_openssl"
echo "LibXML2:        $have_libxml2"
echo "LibExpat:       $have_libexpat"
echo "LibAres:        $have_libares"
echo "LibCares:       $have_libcares"
echo "Libz:           $have_libz"
echo "Bittorrent:     $enable_bittorrent"
echo "Metalink:       $enable_metalink"