# AC_PREREQ(2.57)
AC_INIT(libssh2, [-], libssh2-devel@lists.sourceforge.net)
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([src])
AC_CONFIG_HEADER([src/libssh2_config.h])
AM_MAINTAINER_MODE

dnl SED is needed by some of the tools
AC_PATH_PROG( SED, sed, sed-was-not-found-by-configure,
              $PATH:/usr/bin:/usr/local/bin)
AC_SUBST(SED)

if test "x$SED" = "xsed-was-not-found-by-configure"; then
  AC_MSG_WARN([sed was not found, this may ruin your chances to build fine])
fi

dnl figure out the libssh2 version
VERSION=`$SED -ne 's/^#define LIBSSH2_VERSION *"\(.*\)"/\1/p' ${srcdir}/include/libssh2.h`
AM_INIT_AUTOMAKE(libssh2,$VERSION)
AC_MSG_CHECKING([libssh2 version])
AC_MSG_RESULT($VERSION)

AB_VERSION=$VERSION

AB_INIT

# Check for the OS.
# Daniel's note: this should not be necessary and we need to work to
# get this removed.
AC_CANONICAL_HOST
case "$host" in
    *-mingw*)
    CFLAGS="$CFLAGS -DLIBSSH2_WIN32 -DWINSOCK_VERSION=0x0200"
    LIBS="$LIBS -lws2_32"
    ;;
	*-cygwin)
	CFLAGS="$CFLAGS -DLIBSSH2_WIN32"
    ;;
	*darwin*)
	CFLAGS="$CFLAGS -DLIBSSH2_DARWIN"
	;;
    *hpux*)
    ;;
    *)
    ;;
esac

AC_CHECK_TYPE(long long,
   [AC_DEFINE(HAVE_LONGLONG, 1,
      [Define to 1 if the compiler supports the 'long long' data type.])]
   longlong="yes"
)

dnl Our configure and build reentrant settings
CURL_CONFIGURE_REENTRANT

# Some systems (Solaris?) have socket() in -lsocket.
AC_SEARCH_LIBS(socket, socket)

# Solaris has inet_addr() in -lnsl.
AC_SEARCH_LIBS(inet_addr, nsl)

AC_SUBST(LIBS)

AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PATH_PROGS(SSHD, [sshd], [],
     [$PATH$PATH_SEPARATOR/usr/libexec$PATH_SEPARATOR]dnl
     [/usr/sbin$PATH_SEPARATOR/usr/etc$PATH_SEPARATOR/etc])
AM_CONDITIONAL(SSHD, test -n "$SSHD")
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AC_C_BIGENDIAN

dnl check for how to do large files
AC_SYS_LARGEFILE

# Configure parameters
AC_ARG_WITH(libgcrypt,
  AC_HELP_STRING([--with-libgcrypt],[Use Libgcrypt for crypto]),
  use_libgcrypt=$withval,use_libgcrypt=auto)
AC_ARG_WITH(openssl,
  AC_HELP_STRING([--with-openssl],[Use OpenSSL for crypto]),
  use_openssl=$withval,use_openssl=auto)
AC_ARG_WITH(libz,
  AC_HELP_STRING([--with-libz],[Use Libz for compression]),
  use_libz=$withval,use_libz=auto)

# Look for OpenSSL (default)
if test "$use_openssl" != "no" && test "$use_libgcrypt" != "yes"; then
  AC_LIB_HAVE_LINKFLAGS([ssl], [crypto], [#include <openssl/ssl.h>])
fi

# Look for libgcrypt
if test "$ac_cv_libssl" != "yes" && test "$use_libgcrypt" != "no"; then
  AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>])
fi

if test "$ac_cv_libssl" != "yes" && test "$ac_cv_libgcrypt" != "yes"; then
  AC_MSG_ERROR([cannot find OpenSSL or Libgcrypt,
try --with-libssl-prefix=PATH or --with-libgcrypt-prefix=PATH])
fi

if test "$ac_cv_libgcrypt" = "yes"; then
  AC_DEFINE(LIBSSH2_LIBGCRYPT, 1, [Use libgcrypt])
fi
AM_CONDITIONAL(LIBGCRYPT, test "$ac_cv_libgcrypt" = "yes")

# Look for Libz
if test "$use_libz" != "no"; then
  AC_LIB_HAVE_LINKFLAGS([z], [], [#include <zlib.h>])
  if test "$ac_cv_libz" != yes; then
    AC_MSG_NOTICE([Cannot find libz, disabling compression])
    AC_MSG_NOTICE([Try --with-libz-prefix=PATH if you know you have it])
  else
    AC_DEFINE(LIBSSH2_HAVE_ZLIB, 1, [Compile in zlib support])
  fi
fi

#
# Optional Settings
#
AC_ARG_ENABLE(crypt-none,
  AC_HELP_STRING([--enable-crypt-none],[Permit "none" cipher -- NOT RECOMMENDED]),
  [AC_DEFINE(LIBSSH2_CRYPT_NONE, 1, [Enable "none" cipher -- NOT RECOMMENDED])])

AC_ARG_ENABLE(mac-none,
  AC_HELP_STRING([--enable-mac-none],[Permit "none" MAC -- NOT RECOMMENDED]),
  [AC_DEFINE(LIBSSH2_MAC_NONE, 1, [Enable "none" MAC -- NOT RECOMMENDED])])

AC_ARG_ENABLE(gex-new,
  AC_HELP_STRING([--disable-gex-new],[Disable "new" diffie-hellman-group-exchange-sha1 method]),
  [GEX_NEW=$enableval])
if test "$GEX_NEW" != "no"; then
  AC_DEFINE(LIBSSH2_DH_GEX_NEW, 1, [Enable newer diffie-hellman-group-exchange-sha1 syntax])
fi

dnl ************************************************************
dnl option to switch on compiler debug options
dnl
AC_MSG_CHECKING([whether to enable pedantic and debug compiler options])
AC_ARG_ENABLE(debug,
AC_HELP_STRING([--enable-debug],[Enable pedantic and debug options])
AC_HELP_STRING([--disable-debug],[Disable debug options]),
[ case "$enableval" in
  no)
       AC_MSG_RESULT(no)
       ;;
  *)   AC_MSG_RESULT(yes)

    CPPFLAGS="$CPPFLAGS -DLIBSSH2DEBUG"
    CFLAGS="$CFLAGS -g"

    dnl set compiler "debug" options to become more picky, and remove
    dnl optimize options from CFLAGS
    CURL_CC_DEBUG_OPTS
       ;;
  esac
 ],
       AC_MSG_RESULT(no)
)

# Checks for header files.
# AC_HEADER_STDC
AC_CHECK_HEADERS([errno.h fcntl.h stdio.h stdlib.h unistd.h sys/uio.h])
AC_CHECK_HEADERS([sys/select.h sys/socket.h sys/ioctl.h sys/time.h])
AC_CHECK_HEADERS([arpa/inet.h netinet/in.h])

case $host in
  *-*-cygwin* | *-*-cegcc*)
    # These are POSIX-like systems using BSD-like sockets API.
    ;;
  *)
    AC_CHECK_HEADERS([windows.h winsock2.h ws2tcpip.h])
    ;;
esac

AC_CHECK_FUNCS(poll gettimeofday select strtoll)

dnl Check for select() into ws2_32 for Msys/Mingw
if test "$ac_cv_func_select" != "yes"; then
  AC_MSG_CHECKING([for select in ws2_32])
  AC_TRY_LINK([
#ifdef HAVE_WINSOCK2_H
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <winsock2.h>
#endif
    ],[
      select(0,(fd_set *)NULL,(fd_set *)NULL,(fd_set *)NULL,(struct timeval *)NULL);
    ],[
      AC_MSG_RESULT([yes])
      HAVE_SELECT="1"
      AC_DEFINE_UNQUOTED(HAVE_SELECT, 1,
        [Define to 1 if you have the select function.])
    ],[
      AC_MSG_RESULT([no])
  ])
fi

AC_FUNC_ALLOCA

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE

CURL_CHECK_NONBLOCKING_SOCKET

AC_CONFIG_FILES([Makefile
                 src/Makefile
                 tests/Makefile
                 example/Makefile
                 example/simple/Makefile
                 docs/Makefile
                 libssh2.pc])
AC_OUTPUT