configure.in

#
# Copyright (c) 2012-2014 CESNET, z.s.p.o.
#
# LICENSE TERMS
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name of the Company nor the names of its contributors
#    may be used to endorse or promote products derived from this
#    software without specific prior written permission.
#
# ALTERNATIVELY, provided that this notice is retained in full, this
# product may be distributed under the terms of the GNU General Public
# License (GPL) version 2 or later, in which case the provisions
# of the GPL apply INSTEAD OF those given above.
#
# This software is provided ``as is'', and any express or implied
# warranties, including, but not limited to, the implied warranties of
# merchantability and fitness for a particular purpose are disclaimed.
# In no event shall the company or contributors be liable for any
# direct, indirect, incidental, special, exemplary, or consequential
# damages (including, but not limited to, procurement of substitute
# goods or services; loss of use, data, or profits; or business
# interruption) however caused and on any theory of liability, whether
# in contract, strict liability, or tort (including negligence or
# otherwise) arising in any way out of the use of this software, even
# if advised of the possibility of such damage.
#
# $Id$
#

# Process this file with autoconf to produce a configure script.
AC_INIT([libnetconf], m4_esyscmd([cut -f1 ./VERSION | tr -d '\n']))

m4_include([m4/ax_pthread.m4])
m4_include([m4/ax_python_module.m4])

AC_CANONICAL_HOST

PACKAGE_VERSION=`cut -f1 ./VERSION | tr -d '\n'`
AC_SUBST(PACKAGE_VERSION)
LIBTOOL_VERSION_INFO=`echo ${PACKAGE_VERSION} | sed -e 's/\./:/g' `
AC_SUBST(LIBTOOL_VERSION_INFO)

if test -n "`git branch | grep '\* *master'`"; then
	RELEASE_TAG="_trunk"
fi
RELEASE="`git log | grep '^commit' | sed "/$(git log | grep -B 4 -m 1 "VERSION: bump to" | grep ^commit)/q" | wc -l`$RELEASE_TAG"
if test -z "${RELEASE}"; then
	RELEASE=1
fi
AC_SUBST(RELEASE)

if test "`git show > /dev/null 2>&1;echo $?`" = "0"; then
        CPPFLAGS="$CPPFLAGS -DRCSID=\\\"\$(IDGIT)\\\""
else
        CPPFLAGS="$CPPFLAGS -DRCSID=\\\"\$(IDNOGIT)\\\""
fi

USERNAME=`git config --get user.name`
USERMAIL=`git config --get user.email`
AC_SUBST(USERNAME)
AC_SUBST(USERMAIL)

NC_WORKINGDIR_PATH="/var/lib/$PACKAGE_NAME/"
SETBIT=0
SETUSER=""
SETGROUP=""
CONFIGURE_PARAMS=""

LIBS="$LIBS -ldl"

# Check for pkg-config.
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
if test "x$PKG_CONFIG" = "xno"; then
	AC_MSG_ERROR(['pkgconfig' not found.])
fi

# Check for pyang used in lnctool
AC_CHECK_PROG([HAVE_PYANG], [pyang], [yes], [])
AC_SUBST(HAVE_PYANG)

# hack for expanding paths in lnctool in case of building RPM package
AC_ARG_WITH([rpm], [],
	[LNCTOOLDESTDIR=""],
	[LNCTOOLDESTDIR="\$(DESTDIR)"]
)
AC_SUBST(LNCTOOLDESTDIR)

# Check for xsltproc used in lnctool
AC_CHECK_PROG([HAVE_XSLTPROC], [xsltproc], [yes], [])
AC_SUBST(HAVE_XSLTPROC)

AC_ARG_WITH([libxml2],
	[AC_HELP_STRING([--with-libxml2], [specific libxml2 location])],
	[
		AC_CHECK_PROG([XML2_CONFIG], [xml2-config], [yes], [no], [$withval])
		if test "$XML2_CONFIG" = "no"; then
			AC_MSG_ERROR([Missing development package of libxml2.])
		fi
		CFLAGS="`$withval/xml2-config --cflags` $CFLAGS"
		LIBXML2_LIBS="`$withval/xml2-config --libs`"
		LIBS="$LIBXML2_LIBS $LIBS"
		WITH_LIBXML2="$withval"
		CONFIGURE_PARAMS="--with-libxml2=$withval $CONFIGURE_PARAMS"
		AC_SUBST(LIBXML2_LIBS)
	]
)

AC_ARG_WITH([libxslt],
	[AC_HELP_STRING([--with-libxslt], [specific libxslt location])],
	[
		AC_CHECK_PROG([XSLT_CONFIG], [xslt-config], [yes], [no], [$withval])
		if test "$XSLT_CONFIG" != "no"; then
			AC_MSG_ERROR([Missing xslt-config to get XSLT flags for compilation.])
		fi
		CFLAGS="`$withval/xslt-config --cflags` $CFLAGS"
		LIBS="`$withval/xslt-config --libs` $LIBS"
		WITH_LIBXSLT="$withval"
		CONFIGURE_PARAMS="--with-libxslt=$withval $CONFIGURE_PARAMS"
	]
)

AC_ARG_VAR(READ_TIMEOUT, [Timeout [s] for reading a complete NETCONF message (30)])
if test -z "$READ_TIMEOUT"; then
    READ_TIMEOUT=30
fi

AC_ARG_VAR(MONITORING_LIST_SIZE, [Size [KB] of the storage for NETCONF sessions monitoring (16)])
if test -z "$MONITORING_LIST_SIZE"; then
    MONITORING_LIST_SIZE=16
fi

AC_ARG_ENABLE([libssh],
	AC_HELP_STRING([--disable-libssh], [Use ssh client program instead of libssh.]),
	if test "$enableval" = "no"; then
		libssh="no"
		CPPFLAGS="$CPPFLAGS -DDISABLE_LIBSSH"
		LIBS="$LIBS -lutil" # forkpty()
		LIBSSH_DIRECTIVE="#define DISABLE_LIBSSH"
		CONFIGURE_PARAMS="--disable-libssh $CONFIGURE_PARAMS"
	else
		libssh="yes"
	fi
	,
	# use libssh by default
	libssh="yes"
)
AC_SUBST(LIBSSH_DIRECTIVE)

tls="no"
AC_ARG_ENABLE([tls],
	AC_HELP_STRING([--enable-tls], [Enable support for NETCONF over TLS using OpenSSL.]),
	if test "$enableval" = "yes"; then
		tls="yes"
		CPPFLAGS="$CPPFLAGS -DENABLE_TLS"
		LIBS="$LIBS -lssl"
		CONFIGURE_PARAMS="--enable-tls $CONFIGURE_PARAMS"
	fi
)

dnssec="no"
AC_ARG_ENABLE([dnssec],
	AC_HELP_STRING([--enable-dnssec], [Enable support for SSHFP retrieval using DNSSEC for SSH.]),
	if test "$enableval" = "yes"; then
		dnssec="yes"
		CPPFLAGS="$CPPFLAGS -DENABLE_DNSSEC"
		CONFIGURE_PARAMS="--enable-dnssec $CONFIGURE_PARAMS"
	fi
)

AC_ARG_ENABLE([yang-schemas],
	AC_HELP_STRING([--disable-yang-schemas], [Disable support for YANG format in <get-schema> operation.]),
	[
	if test "$enableval" = "no"; then
		yang="no"
	else
		yang="yes"
	fi
	],
	# it is supported by default
	yang="yes"
)
if test "$yang" = "no"; then
	CONFIGURE_PARAMS="--disable-yang-schemas $CONFIGURE_PARAMS"
	CPPFLAGS="$CPPFLAGS -DDISABLE_YANGFORMAT"
fi

AC_ARG_ENABLE([notifications],
	AC_HELP_STRING([--disable-notifications], [Disable support of NETCONF Notifications (RFC 5277)]),
	[
	if test "$enableval" = "no"; then
		notif="no"
	else
		notif="yes"
	fi
	],
	# notifications are supported by default
	notif="yes"
)
if test "$notif" = "yes"; then
	HDRS_PUBL_SUBDIR_NOTIFICATIONS="src/notifications.h src/notifications_xml.h"
	HDRS_PRIV_NOTIFICATIONS="src/notifications.h src/notifications_xml.h"
	SRCS_NOTIFICATIONS="src/notifications.c"
	[INCLUDE_NOTIFICATIONS="#include \"libnetconf/notifications.h\""]
	[INCLUDE_NOTIFICATIONS_XML="#include \"libnetconf/notifications_xml.h\""]
	PROVIDES="$PROVIDES libnetconf-notifications"
else
	CONFIGURE_PARAMS="$CONFIGURE_PARAMS --disable-notifications"
	CPPFLAGS="$CPPFLAGS -DDISABLE_NOTIFICATIONS"
	HDRS_PUBL_SUBDIR_NOTIFICATIONS=""
	HDRS_PRIV_NOTIFICATIONS=""
	SRCS_NOTIFICATIONS=""
	[INCLUDE_NOTIFICATIONS="#define DISABLE_NOTIFICATIONS"]
	[INCLUDE_NOTIFICATIONS_XML="#define DISABLE_NOTIFICATIONS"]
fi

AC_ARG_ENABLE([url],
	AC_HELP_STRING([--disable-url], [Disable support of NETCONF URL Capability (RFC 6241)]),
	[
	if test "$enableval" = "no"; then
		url="no"
	else
		url="yes"
	fi
	],
	# URL Capability is supported by default
	url="yes"
)
if test "$url" = "yes"; then
	HDRS_PUBL_SUBDIR_URL="src/url.h"
	HDRS_PRIV_URL="src/url_internal.h src/url.h"
	SRCS_URL="src/url.c"
	[INCLUDE_URL="#include \"libnetconf/url.h\""]
	PROVIDES="$PROVIDES libnetconf-url"
else
	CONFIGURE_PARAMS="$CONFIGURE_PARAMS --disable-url"
	CPPFLAGS="$CPPFLAGS -DDISABLE_URL"
	HDRS_PUBL_SUBDIR_URL=""
	HDRS_PRIV_URL=""
	SRCS_URL=""
	[INCLUDE_URL="#define DISABLE_URL"]
fi

AC_ARG_ENABLE([validation],
	AC_HELP_STRING([--disable-validation], [Disable support for configuration data validation]),
	[
	if test "$enableval" = "no"; then
		validation="no"
	else
		validation="yes"
	fi
	],
	# support validation by default
	validation="yes"
)
if test "$validation" = "no"; then
	CONFIGURE_PARAMS="--disable-validation $CONFIGURE_PARAMS"
	CPPFLAGS="$CPPFLAGS -DDISABLE_VALIDATION"
fi

AC_ARG_ENABLE([doc],
        AC_HELP_STRING([--disable-doc], [Disable generation of documentation]),
        [
        if test "$enableval" = "no"; then
                doc="no"
        else
                doc="yes"
        fi
        ],
        # support doc by default
        doc="yes"
)
if test "$doc" = "no"; then
	INSTALL_DOC=""
else
	INSTALL_DOC=install-doc
fi
AC_SUBST(INSTALL_DOC)

AC_ARG_ENABLE([debug],
	AC_HELP_STRING([--enable-debug],[Compile with debug options]),
	CFLAGS="$CFLAGS -g -O0 -DDEBUG"
	CONFIGURE_PARAMS="--enable-debug $CONFIGURE_PARAMS",
	CFLAGS="$CFLAGS -O3 -DNDEBUG"
)
AC_ARG_ENABLE([debug-threads],
	AC_HELP_STRING([--enable-debug-threads],[Extend debug mode for threads]),
	CPPFLAGS="$CPPFLAGS -DDEBUG_THREADS"
	CONFIGURE_PARAMS="--enable-debug-threads $CONFIGURE_PARAMS"
)
AC_ARG_WITH([workingdir],
	AC_HELP_STRING([--with-workingdir=path],[Path to a working directory of libnetconf, the default value is /var/lib/libnetconf/]),
	NC_WORKINGDIR_PATH="$withval"
	CONFIGURE_PARAMS="--with-workingdir=$withval $CONFIGURE_PARAMS"
)
AC_ARG_WITH([sessionfiledir],
	AC_HELP_STRING([--with-sessionfiledir=path],[Path to a session file directory of libnetconf, the default value is inside libnetconf working directory]),
	NC_SESSIONFILE_PATH="$withval"
	CONFIGURE_PARAMS="--with-sessionfiledir=$withval $CONFIGURE_PARAMS"
	,
	NC_SESSIONFILE_PATH="$NC_WORKINGDIR_PATH"
)
AC_ARG_WITH([maxnotificationfilesize],
	AC_HELP_STRING([--with-maxnotificationfilesize=size],[Maximum size for the notification stream files, if not specified the file can grow indefinitely]),
	NCNTF_STREAMS_MAX_SIZE_IN_MB="$withval"
	CONFIGURE_PARAMS="--with-maxnotificationfilesize=$withval $CONFIGURE_PARAMS"
	,
	NCNTF_STREAMS_MAX_SIZE_IN_MB=0
)
AC_ARG_WITH([streamsdir],
	AC_HELP_STRING([--with-streamsdir=path],[Path to the events streams, the default value is streams subdirectory of libnetconf working directory]),
	NCNTF_STREAMS_PATH="$withval"
	CONFIGURE_PARAMS="--with-streamsdir=$withval $CONFIGURE_PARAMS"
	,
	NCNTF_STREAMS_PATH="$NC_WORKINGDIR_PATH/streams/"
)
AC_ARG_WITH([suid],
	AC_HELP_STRING([--with-suid=user],[When creating files or directories using libnetconf, rely on the SUID bit set and change their ownership to the specified user]),
	if test "$withval" != "no"; then
		SETBIT=$(($SETBIT | 1))
		if test "$withval" != "yes"; then
			SETUSER="$withval"
		else
			SETUSER="`id -un`"
		fi
		CONFIGURE_PARAMS="--with-suid=$withval $CONFIGURE_PARAMS"
	fi
)
AC_ARG_WITH([sgid],
	AC_HELP_STRING([--with-sgid=group],[When creating files or directories using libnetconf, rely on the SGID bit set and change their ownership to the specified group]),
	if test "$withval" != "no"; then
		SETBIT=$(($SETBIT | 2))
		if test "$withval" != "yes"; then
			SETGROUP="$withval"
		else
			SETGROUP="`id -gn`"
		fi
		CONFIGURE_PARAMS="--with-sgid=$withval $CONFIGURE_PARAMS"
	fi
)
AC_ARG_WITH([nacm-recovery-uid],
	AC_HELP_STRING([--with-nacm-recovery-uid=uid], [Set UID to be used to identify NACM recovery session, default value is 0.]),
	[
	if test -z "$withval"; then
		NACM_RECOVERY_UID="0"
	elif expr "$withval" : "-\?[[0-9]]\+$" > /dev/null ; then
		NACM_RECOVERY_UID="$withval"
		CONFIGURE_PARAMS="--with-nacm-recovery-uid=$withval $CONFIGURE_PARAMS"
	else
		AC_MSG_ERROR([Invalid NACM recovey UID. The value must be a valid number.])
	fi
	],
	NACM_RECOVERY_UID="0"
)

AC_ARG_WITH([pyapi],
	AC_HELP_STRING([--with-pyapi@<:@=path_to_python3@:>@], [Build also libnetconf Python API. Optionally provide path to python3.]),
	[
	if test "$withval" = "yes"; then
		AC_PATH_PROG([PYTHON], [python3], ["missing"])
		if test "$PYTHON" = "missing"; then
			AC_MSG_ERROR([Missing python3.])
		fi
	elif test "$withval" != "no"; then
		AC_MSG_CHECKING([python3])
		if test -x "$withval"; then
			PYTHON="$withval"
			AC_MSG_RESULT([$withval])
		else
			AC_MSG_RESULT([invalid])
			AC_MSG_ERROR([Given python3 ($withval) is not executable.])
		fi
	fi
	# Check python for manager and configurator
	AX_PYTHON_MODULE(distutils, fatal)

	PYPREFIX="`$PYTHON -c 'import os.path; import sys; print(os.path.abspath(sys.prefix));'`"
	AC_SUBST(PYPREFIX)

	],[]
)
AC_SUBST(PYTHON)

############################ Check for programs ################################

# Check for architecture, only x86 and x86_64 are supported
if test -z "$host_cpu";
then
	AC_CHECK_PROG([UNAME], [uname], [yes], [no])
	if test "$UNAME" = "no"; then
		AC_MSG_ERROR(["uname not found!"])
	fi
	build_cpu=`uname -m`
	host_cpu=$build_cpu
fi
AC_MSG_CHECKING([for host architecture])
case $host_cpu in
    i?86 )
	AC_MSG_RESULT($host_cpu is supported)
	;;
    x86_64 )
	AC_MSG_RESULT($host_cpu is supported)
        ;;
    * )
        AC_MSG_WARN([unsupported architecture $host_cpu])
        ;;
esac

if test "$libssh" = "no"; then
	# ssh for NETCONF connection
	AC_PATH_PROG([SSH_PROG], [ssh], ["missing"])
	if test "$SSH_PROG" = "missing"; then
		AC_MSG_ERROR([Missing ssh client (install OpenSSH)])
	fi
fi

# Check for doxygen
AC_CHECK_PROG(DOXYGEN, doxygen, doxygen, no)

# Check for rpmbuild
AC_CHECK_PROG(RPMBUILD, rpmbuild, rpmbuild, no)

# Check whether readlink supports the -f option
READLINK_FKNOWN=`$readlink -f xxx 1>/dev/null 2>&1 && echo yes`
if test "x${READLINK_FKNOWN}" != "xyes";
then
	# Try finding greadlink (e.g., Mac OS X)
	AC_CHECK_PROG(READLINK, greadlink, greadlink, readlink)
	if test "x${READLINK}" = "xreadlink";
	then
		AC_MSG_WARN([Try installing greadlink.])
	fi
else
	AC_SUBST(READLINK, [readlink])
fi

AC_CHECK_PROG([LIBT], [libtool], [yes], [no])
if test "$LIBT" = "no"; then
	AC_MSG_ERROR([Missing libtool])
fi

# Check for standard programs
AC_PROG_CC(clang llvm-gcc gcc)
AC_PROG_CPP
AC_PROG_LN_S
AC_PROG_INSTALL
# Use libtool
AC_PROG_LIBTOOL
# Always use ./libtool unless overridden from command-line
if test -z "$libtool"; then
	libtool='./libtool'
fi
AC_SUBST(libtool)

# Check for compiler's visibility attribute
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_MSG_CHECKING(for ELF visibility)
AC_COMPILE_IFELSE([
	AC_LANG_PROGRAM([[
		#pragma GCC visibility push(hidden)
		__attribute__((visibility("default")))
		int var=10;
		]])
	],[
	AC_MSG_RESULT([yes])
	API="__attribute__((visibility(\"default\")))"
	],[
	AC_MSG_RESULT([no])
	CFLAGS="$SAVE_CFLAGS"
	API=""
	]
)
AC_SUBST(API)

############################ Check for libraries ###############################
export PKG_CONFIG_PATH=/usr/local/${libdir##*/}/pkgconfig:$PKG_CONFIG_PATH

### libxml2 ###
if test -z "$WITH_LIBXML2" ; then
	AC_CHECK_PROG([XML2_CONFIG], [xml2-config], [yes], [no], [$WITH_LIBXML2 $PATH])
	if test "$XML2_CONFIG" = "no"; then
		AC_MSG_ERROR([Missing development package of libxml2.])
	fi
	CFLAGS="`xml2-config --cflags` $CFLAGS"
	LIBXML2_LIBS="`xml2-config --libs`"
	LIBS="$LIBXML2_LIBS $LIBS"
	AC_SUBST(LIBXML2_LIBS)
fi
AC_CHECK_LIB([xml2], [xmlDOMWrapReconcileNamespaces],
	[HAVE_LIBXML2_RECONNS="#define HAVE_XMLDOMWRAPRECONCILENAMESPACE"],
	[HAVE_LIBXML2_RECONNS="#undef HAVE_XMLDOMWRAPRECONCILENAMESPACE"]
)

### libxslt ###
if test "$validation" = "yes" -o "$yang" = "yes"; then
	if test -z "$WITH_LIBXSLT" ; then
		AC_CHECK_PROG([XSLT_CONFIG], [xslt-config], [yes], [no], [$WITH_LIBXSLT $PATH])
		if test "$XSLT_CONFIG" != "no"; then
			CFLAGS="`xslt-config --cflags` $CFLAGS"
			LIBS="`xslt-config --libs` $LIBS"
		fi
	fi
	AC_CHECK_LIB([xslt], [xsltApplyStylesheet], [], AC_MSG_ERROR([Missing libxslt library]))
	AC_CHECK_HEADERS([libxslt/transform.h libxslt/xsltInternals.h], [], AC_MSG_ERROR([Missing libxslt headers]))
fi

if test "$libssh" = "yes"; then
	### libssh ###
	AC_CHECK_LIB([ssh], [ssh_threads_get_pthread], [], [
        AC_CHECK_LIB([ssh], [ssh_pki_key_ecdsa_name], [], AC_MSG_ERROR([Missing libssh (>=0.6.4).]))
        AC_CHECK_LIB([ssh_threads], [ssh_threads_get_pthread], [], AC_MSG_ERROR([Missing the libssh_threads library.]))
	])
	AC_CHECK_HEADERS([libssh/libssh.h], [], AC_MSG_ERROR([Missing libssh headers.]))

	BUILDREQS="$BUILDREQS libssh-devel >= 0.6.4"
	DEVELREQS="$DEVELREQS libssh-devel >= 0.6.4"
fi

SRCS_TRANSPORT="src/ssh.c"
HDRS_PRIV_TRANSPORT="src/ssh.h"
if test "$tls" = "yes"; then
	### OpenSSL ###
	AC_CHECK_LIB([ssl], [SSL_library_init], [], AC_MSG_ERROR([Missing OpenSSL library.]))
	AC_CHECK_HEADERS([openssl/bio.h openssl/ssl.h openssl/err.h openssl/pem.h], [], AC_MSG_ERROR([Missing OpenSSL headers.]))
	SRCS_TRANSPORT="$SRCS_TRANSPORT src/tls.c"
	HDRS_PRIV_TRANSPORT="$HDRS_PRIV_TRANSPORT src/tls.h"
	HDRS_PRIV_TLS="src/libnetconf_tls.h"
	HDRS_PUBL_TLS="headers/libnetconf_tls.h"
	BUILDREQS="$BUILDREQS openssl-devel >= 1.0.0"
	DEVELREQS="$DEVELREQS openssl-devel >= 1.0.0"
elif test "$dnssec" = "yes"; then
	AC_CHECK_LIB([ssl], [SSL_library_init], [], AC_MSG_ERROR([Missing OpenSSL library.]))
	AC_CHECK_HEADERS([openssl/bio.h openssl/ssl.h openssl/err.h openssl/pem.h], [], AC_MSG_ERROR([Missing OpenSSL headers.]))
	BUILDREQS="$BUILDREQS openssl-devel >= 1.0.0"
	DEVELREQS="$DEVELREQS openssl-devel >= 1.0.0"
fi

### pthread ###
AX_PTHREAD([
	LIBS="$PTHREAD_LIBS $LIBS"
	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	CC="$PTHREAD_CC"], AC_MSG_ERROR([Missing POSIX threads support.]))
#AC_CHECK_LIB([pthread], [pthread_create], [], AC_MSG_ERROR([Missing POSIX threads library.]))
AC_CHECK_HEADERS([pthread.h], [], AC_MSG_ERROR([Missing POSIX threads headers.]))

# This must be after pthread detection
AC_SEARCH_LIBS([sem_init], [pthread rt], ,
	[AC_MSG_ERROR([Could not find sem_init() in expected locations. Install or/and add the comprising library into the list of tested libraries.])])

if test "$dnssec" = "yes"; then
	# This must be after pthread as well...
	LIBS="$LIBS -lval-threads -lsres"
	if test "$tls" = "no"; then
		LIBS="$LIBS -lssl"
	fi
	### libval (libval-threads & libsres) ###
	AC_CHECK_LIB([val-threads], [val_res_query], [], AC_MSG_ERROR([Missing libval-threads (libval part) library.]))
	AC_CHECK_LIB([sres], [ns_initparse], [], AC_MSG_ERROR([Missing libsres (libval part) library.]))
	AC_CHECK_HEADERS([validator/validator.h validator/resolver.h validator/validator-compat.h], [], AC_MSG_ERROR([Missing libval headers.]))
fi

if test "$url" = "yes"; then
	### libcurl ###
	PKG_CHECK_MODULES([CURL], [libcurl])
	AC_CHECK_LIB([curl], [curl_global_init], [], AC_MSG_ERROR([Missing libcurl.]))
	AC_CHECK_HEADERS([curl/curl.h], [], AC_MSG_ERROR([Missing libcurl headers.]))
	BUILDREQS="$BUILDREQS libcurl-devel"
fi

###################### Check for configure parameters ##########################

######################### Checks for header files ##############################
AC_CHECK_HEADERS([fcntl.h limits.h netdb.h stddef.h stdint.h stdlib.h string.h sys/file.h sys/socket.h termios.h unistd.h], [], AC_MSG_ERROR([Missing system headers.]))
AC_CHECK_HEADERS([utmpx.h], [HAVE_UTMPX="#define HAVE_UTMPX_H"], [HAVE_UTMPX="#undef HAVE_UTMPX_H"])

######## Checks for typedefs, structures, and compiler characteristics #########
AC_CHECK_HEADER_STDBOOL
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_INT32_T
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT64_T

######################## Checks for library functions ##########################
AC_FUNC_GETGROUPS
AC_FUNC_MALLOC
AC_FUNC_MMAP
AC_FUNC_REALLOC
AC_CHECK_FUNCS([ftruncate memset mkdir munmap socket strcasecmp strchr strdup strerror strrchr strstr strtol strtoul])
if test "$libssh" = "no"; then
	AC_CHECK_FUNCS([dup2])
fi
AC_CHECK_FUNC([eaccess], [HAVE_EACCESS="#define HAVE_EACCESS"], [HAVE_EACCESS="#undef HAVE_EACCESS"] )

### check for the shared memory implementation
AC_CHECK_FUNC([shmc], [],
	          [LIBS="$LIBS -lrt"
	           AC_CHECK_FUNCS([shm_open],
	                          [CPPFLAGS="$CPPFLAGS -DPOSIX_SHM"],
	                          [AC_MSG_ERROR([Missing shared memory implementation.])])
	          ]
)

############################### Set output #####################################
AC_SUBST(V_SHLIB_CMD)
AC_SUBST(V_SHLIB_OPT)
AC_SUBST(V_SONAME_OPT)
AC_SUBST(NACM_RECOVERY_UID)
AC_SUBST(BUILDREQS)
AC_SUBST(DEVELREQS)
AC_SUBST(PROVIDES)
AC_SUBST(DISTRO)
AC_SUBST(NC_WORKINGDIR_PATH)
AC_SUBST(NC_SESSIONFILE_PATH)
AC_SUBST(NCNTF_STREAMS_MAX_SIZE_IN_MB)
AC_SUBST(NCNTF_STREAMS_PATH)
AC_SUBST(SETBIT)
AC_SUBST(SETUSER)
AC_SUBST(SETGROUP)
AC_SUBST(HDRS_PUBL_SUBDIR_NOTIFICATIONS)
AC_SUBST(HDRS_PRIV_NOTIFICATIONS)
AC_SUBST(HDRS_PRIV_TLS)
AC_SUBST(HDRS_PUBL_TLS)
AC_SUBST(SRCS_TRANSPORT)
AC_SUBST(HDRS_PRIV_TRANSPORT)
AC_SUBST(SRCS_NOTIFICATIONS)
AC_SUBST(INCLUDE_NOTIFICATIONS)
AC_SUBST(INCLUDE_NOTIFICATIONS_XML)
AC_SUBST(HDRS_PUBL_SUBDIR_URL)
AC_SUBST(HDRS_PRIV_URL)
AC_SUBST(SRCS_URL)
AC_SUBST(INCLUDE_URL)
AC_SUBST(CONFIGURE_PARAMS)
AC_SUBST(HAVE_EACCESS)
AC_SUBST(HAVE_UTMPX)
AC_SUBST(HAVE_LIBXML2_RECONNS)
AC_SUBST(SSH_PROG)
AC_SUBST(PTHREAD_LIBS)
AC_SUBST(READ_TIMEOUT)
AC_SUBST(MONITORING_LIST_SIZE)

AC_SUBST(DOXYGEN)
if test -z "$DOXYGEN"; then
	AC_MSG_WARN([Due to missing doxygen you will not able to generate Doxygen documentation.])
else
	# check for dot if we are able to use it
	AC_CHECK_PROG([GRAPHS], [dot], [YES], [NO])
	AC_SUBST(GRAPHS)
fi

AC_SUBST(RPMBUILD)
if test -z "$RPMBUILD"; then
	AC_MSG_WARN([Due to missing rpmbuild you will not able to generate RPM package.])
fi

if test -z "$HAVE_XSLTPROC"; then
	AC_MSG_WARN([Due to missing xsltproc, lnctool will not work.])
fi

if test -z "$HAVE_PYANG"; then
	AC_MSG_WARN([Due to missing pyang, lnctool will not work.])
fi

if test -n "$PYTHON"; then
	AC_CONFIG_FILES(python/python3-netconf.spec)
fi

AC_CONFIG_FILES(dev-tools/lncdatastore/Makefile)
AC_CONFIG_FILES(Makefile src/config.h libnetconf.spec libnetconf.pc Doxyfile)
AC_CONFIG_FILES(headers/libnetconf.h headers/libnetconf_xml.h headers/libnetconf_ssh.h)

AC_OUTPUT