#                                               -*- Autoconf -*-

# Process this file with autoconf to produce a configure script.

#######################

### Base configuration

# Configure autoconf

AC_PREREQ([2.64])

AC_INIT([lldpd],

        [m4_esyscmd_s([./get-version])],

        [https://github.com/vincentbernat/lldpd/issues],

        [lldpd],

        [http://vincentbernat.github.io/lldpd/])

AC_CONFIG_SRCDIR([src/log.c])

AC_CONFIG_HEADER([config.h])

AC_CONFIG_FILES([Makefile

                 src/Makefile

                 src/compat/Makefile

                 src/daemon/Makefile

		 src/lib/Makefile

                 src/client/Makefile

	         tests/Makefile

                 osx/Makefile])

AC_CONFIG_MACRO_DIR([m4])

AC_SUBST([CONFIGURE_ARGS], [$ac_configure_args])

# Configure automake

AM_INIT_AUTOMAKE([foreign subdir-objects -Wall -Werror tar-ustar])

AM_MAINTAINER_MODE

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])

# Automake 1.12...

m4_pattern_allow([AM_PROG_AR])

AM_PROG_AR

# Configure libtool

LT_INIT

gl_LD_VERSION_SCRIPT

#######################

### Checks

# Checks for programs.

AC_PROG_CC

AC_PROG_CC_C99

if test x"$ac_cv_prog_cc_c99" = x"no"; then

  AC_MSG_FAILURE([*** C99 support is mandatory])

fi

AM_PROG_CC_C_O

AC_PROG_LIBTOOL

AC_PROG_LN_S

AC_PROG_EGREP

AC_PROG_AWK

# Doxygen

DX_HTML_FEATURE(ON)

DX_DOT_FEATURE(OFF)

DX_CHM_FEATURE(OFF)

DX_CHI_FEATURE(OFF)

DX_MAN_FEATURE(OFF)

DX_RTF_FEATURE(OFF)

DX_XML_FEATURE(OFF)

DX_PDF_FEATURE(ON)

DX_PS_FEATURE(OFF)

DX_INIT_DOXYGEN([lldpd], [doxygen.cfg], [doxygen])

# Check some compiler flags

AX_CFLAGS_GCC_OPTION([-Wunknown-warning-option], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-fdiagnostics-show-option], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-fdiagnostics-color=auto], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-pipe], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wall], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-W], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wextra], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wformat], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wformat-security], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wfatal-errors], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wcast-align], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wheader-guard], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wdocumentation], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Winline], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wpointer-arith], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-fno-omit-frame-pointer], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wno-unused-parameter], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wno-missing-field-initializers], [LLDP_CFLAGS])

AX_CFLAGS_GCC_OPTION([-Wno-sign-compare], [LLDP_CFLAGS]) dnl Should be fixed later

AX_LDFLAGS_OPTION([-Wl,-z,relro], [LLDP_LDFLAGS])

AX_LDFLAGS_OPTION([-Wl,-z,now], [LLDP_LDFLAGS])

AC_C_TYPEOF

# Hardening

AC_ARG_ENABLE([hardening],

  [AS_HELP_STRING([--enable-hardening],

    [Enable compiler and linker options to frustrate memory corruption exploits @<:@default=yes@:>@])],

  [hardening="$enableval"],

  [hardening="yes"])

AC_ARG_ENABLE([pie],

  [AS_HELP_STRING([--enable-pie],

    [Enable PIE (position independant executable) @<:@default=no@:>@])],

  [pie="$enableval"],

  [pie="no"])

if test x"$hardening" != x"no"; then

  AX_CFLAGS_GCC_OPTION([-fstack-protector], [LLDP_CFLAGS])

  AX_CFLAGS_GCC_OPTION([-fstack-protector-all], [LLDP_CFLAGS])

  AX_CFLAGS_GCC_OPTION([-fstack-protector-strong], [LLDP_CFLAGS])

  AX_CFLAGS_GCC_OPTION([-fstack-protector-strong], [LLDP_CFLAGS])

  AX_CFLAGS_GCC_OPTION([-D_FORTIFY_SOURCE=2], [LLDP_CPPFLAGS])

fi

if test x"$pie" = x"yes"; then

  AX_CFLAGS_GCC_OPTION([-fPIE], [LLDP_CFLAGS])

  AX_LDFLAGS_OPTION([-fPIE -pie], [LLDP_BIN_LDFLAGS],

    [AX_LDFLAGS_OPTION([-fPIE -Wl,-pie], [LLDP_BIN_LDFLAGS])])

fi

# Sanitizers

AC_ARG_ENABLE([sanitizers],

  AS_HELP_STRING([--enable-sanitizers],

    [Enable code instrumentation with selected sanitizers @<:@default=no@:>@]),

  [

case "$enableval" in

    no) sanitizers= ;;

    yes) sanitizers="-fsanitize=address,undefined" ;;

    *) sanitizers="-fsanitize=$enableval" ;;

esac

if test x"$sanitizers" != x; then

  LLDP_CFLAGS="$LLDP_CFLAGS $sanitizers"

  LLDP_LDFLAGS="$LLDP_LDFLAGS $sanitizers"

  AC_DEFINE([HAVE_ADDRESS_SANITIZER], 1, [Define if have both address and leak sanitizer])

elif test x"$hardening" != x"no"; then

  AX_LDFLAGS_OPTION([-fsanitize=safe-stack], [LLDP_BIN_LDFLAGS])

  if test x"$ax_cv_ld_check_flag__fsanitize_safe_stack" != x"no"; then

    AX_CFLAGS_GCC_OPTION([-fsanitize=safe-stack], [LLDP_CFLAGS])

  fi

fi

  ])

# Code coverage

AC_ARG_ENABLE([gcov],

  AS_HELP_STRING([--enable-gcov],

    [Enable coverage instrumentation @<:@default=no@:>@]),

    [gcov="$enableval"],

    [gcov="no"])

if test x"$gcov" != x"no"; then

  LLDP_CFLAGS="$LLDP_CFLAGS --coverage"

  LLDP_LDFLAGS="$LLDP_LDFLAGS --coverage"

fi

# OS

lldp_CHECK_OS

lldp_CFLAGS_OS

AC_CACHE_SAVE

# Checks for header files.

AC_HEADER_RESOLV

AC_CHECK_HEADERS([valgrind/valgrind.h])

lldp_CHECK_STDINT

AC_CACHE_SAVE

# Checks for typedefs, structures, and compiler characteristics.

lldp_CHECK___PROGNAME

lldp_CHECK_ALIGNOF

# Checks for library functions.

AC_CONFIG_LIBOBJ_DIR([src/compat])

AC_FUNC_MALLOC

AC_FUNC_REALLOC

AC_FUNC_FORK

# Some functions can be in libbsd

PKG_CHECK_MODULES([libbsd], [libbsd-overlay], [

  _save_CFLAGS="$CFLAGS"

  _save_LIBS="$LIBS"

  CFLAGS="$CFLAGS $libbsd_CFLAGS"

  LIBS="$LIBS $libbsd_LIBS"

  AC_MSG_CHECKING([if libbsd can be linked correctly])

  AC_TRY_LINK([

@%:@include <sys/time.h>

@%:@include <sys/types.h>

],[],

    [

      AC_MSG_RESULT(yes)

      LLDP_CFLAGS="$LLDP_CFLAGS $libbsd_CFLAGS"

      LLDP_LDFLAGS="$LLDP_LDFLAGS $libbsd_LIBS"

    ],[

      AC_MSG_RESULT(no)

      CFLAGS="$_save_CFLAGS"

      LIBS="$_save_LIBS"

    ])

], [:])

# setproctitle may have an _init function

AC_REPLACE_FUNCS([setproctitle])

AC_CHECK_FUNCS([setproctitle_init])

# Other functions

AC_REPLACE_FUNCS([strlcpy

                  strnlen

                  strndup

                  strtonum

                  getline

                  asprintf

                  vsyslog

                  daemon])

# Optional functions

AC_CHECK_FUNCS([setresuid setresgid])

# Check for res_init. On OSX, res_init is a symbol in libsystem_info

# and a macro in resolv.h. We need to ensure we test with resolv.h.

m4_pushdef([AC_LANG_CALL(C)], [

  AC_LANG_PROGRAM([$1

@%:@include <resolv.h>], [return $2 ();])])

AC_SEARCH_LIBS([res_init], resolv bind,

               AC_DEFINE([HAVE_RES_INIT], 1,

               [Define to indicate that res_init() exists]))

m4_popdef([AC_LANG_CALL(C)])

AC_CACHE_SAVE

## Unit tests wich check

PKG_CHECK_MODULES([CHECK], [check >= 0.9.4], [have_check=yes], [have_check=no])

# Third-party libraries

lldp_CHECK_LIBEVENT

# Compatibility with pkg.m4 < 0.27

m4_ifdef([PKG_INSTALLDIR], [PKG_INSTALLDIR],

         [AC_ARG_WITH([pkgconfigdir],

                      [AS_HELP_STRING([--with-pkgconfigdir],

                      [install directory for *.pc pkg-config file])],

                      [],[with_pkgconfigdir='$(libdir)/pkgconfig'])

          AC_SUBST([pkgconfigdir], [${with_pkgconfigdir}])])

#######################

### Options

# Readline

AC_ARG_WITH([readline],

  AS_HELP_STRING(

    [--with-readline],

    [Enable the use of readline-like library @<:@default=auto@:>@]),

  [],

  [with_readline=auto])

if test x"$with_readline" != x"no"; then

   AX_LIB_READLINE

   if test x"$with_readline" != x"check" -a x"$with_readline" != x"auto"; then

     if test x"$ax_cv_lib_readline" = x"no"; then

       AC_MSG_FAILURE([*** no readline support found])

     fi

   fi

else

   ax_cv_lib_readline="no"

fi

# SNMP

AC_ARG_WITH([snmp],

  AS_HELP_STRING(

    [--with-snmp],

    [Enable the use of SNMP @<:@default=no@:>@]),

  [],

  [with_snmp=no])

lldp_CHECK_SNMP

# XML

AC_ARG_WITH([xml],

  AS_HELP_STRING(

    [--with-xml],

    [Enable XML output via libxml2 @<:@default=auto@:>@]),

  [],

  [with_xml=auto])

lldp_CHECK_XML2

# JSON (built-in)

lldp_ARG_ENABLE([json0], [use of pre-0.9.2 JSON/json-c format], [no])

# Seccomp

AC_ARG_WITH([seccomp],

  AS_HELP_STRING(

    [--with-seccomp],

    [Enable seccomp support (with libseccomp, experimental) @<:@default=no@:>@]),

  [],

  [with_seccomp=no])

lldp_CHECK_SECCOMP

# OS X launchd support

lldp_ARG_WITH([launchddaemonsdir], [Directory for launchd configuration file (OSX)],

                                   [/Library/LaunchDaemons])

AC_SUBST([launchddaemonsdir], [$with_launchddaemonsdir])

AM_CONDITIONAL(HAVE_LAUNCHDDAEMONSDIR,

    [test -n "$with_launchddaemonsdir" -a "x$with_launchddaemonsdir" != xno ])

# Systemd

lldp_ARG_WITH([systemdsystemunitdir], [Directory for systemd service files],

              [$($PKG_CONFIG --variable=systemdsystemunitdir systemd 2> /dev/null)])

AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])

AM_CONDITIONAL(HAVE_SYSTEMDSYSTEMUNITDIR,

    [test -n "$with_systemdsystemunitdir" -a "x$with_systemdsystemunitdir" != xno ])

# sysusers

lldp_ARG_WITH([sysusersdir], [Directory for sysusers files],

              [$($PKG_CONFIG --variable=sysusersdir systemd 2> /dev/null)])

AC_SUBST([sysusersdir], [$with_sysusersdir])

AM_CONDITIONAL(HAVE_SYSUSERSDIR,

    [test -n "$with_sysusersdir" -a "x$with_sysusersdir" != xno ])

# AppArmor

lldp_ARG_WITH([apparmordir], [Directory for AppArmor profiles (Linux)],

                             [no])

AC_SUBST([apparmordir], [$with_apparmordir])

AM_CONDITIONAL(HAVE_APPARMORDIR,

    [test -n "$with_apparmordir" -a "x$with_apparmordir" != xno ])

# Systemtap/DTrace

lldp_SYSTEMTAP

# Privsep settings

lldp_ARG_ENABLE([privsep], [Privilege separation], [yes])

lldp_ARG_WITH([privsep-user], [Which user to use for privilege separation], [_lldpd])

lldp_ARG_WITH([privsep-group], [Which group to use for privilege separation], [_lldpd])

# Directories

dnl On autoconf 2.69 and before, runstatedir is not configurable, let be able to use it anyway

if test "x$runstatedir" = x; then

    AC_SUBST([runstatedir], ['${localstatedir}/run'])

fi

lldp_ARG_WITH([privsep-chroot], [Which directory to use to chroot lldpd], [${runstatedir}/lldpd])

lldp_ARG_WITH([lldpd-ctl-socket], [Path to socket for communication with lldpd], [${runstatedir}/lldpd.socket])

lldp_ARG_WITH([lldpd-pid-file], [Path to lldpd PID file], [${runstatedir}/lldpd.pid])

# Netlink

lldp_ARG_WITH_UNQUOTED([netlink-max-receive-bufsize], [Netlink maximum receive buffer size], [1024*1024])

lldp_ARG_WITH_UNQUOTED([netlink-receive-bufsize], [Netlink initial receive buffer size], [0])

lldp_ARG_WITH_UNQUOTED([netlink-send-bufsize], [Netlink send buffer size], [0])

# CDP/FDP/EDP/SONMP

lldp_ARG_ENABLE([cdp], [Cisco Discovery Protocol], [yes])

lldp_ARG_ENABLE([fdp], [Foundry Discovery Protocol], [yes])

lldp_ARG_ENABLE([edp], [Extreme Discovery Protocol], [yes])

lldp_ARG_ENABLE([sonmp], [SynOptics Network Management Protocol], [yes])

# LLDPMED/Dot1/Dot3

lldp_ARG_ENABLE([lldpmed], [LLDP-MED extension], [yes])

lldp_ARG_ENABLE([dot1], [Dot1 extension (VLAN stuff)], [yes])

lldp_ARG_ENABLE([dot3], [Dot3 extension (PHY stuff)], [yes])

lldp_ARG_ENABLE([custom], [Custom TLV support], [yes])

# Oldies

MIN_LINUX_KERNEL_VERSION=2.6.39

lldp_ARG_ENABLE([oldies], [compatibility with Linux kernel older than 2.6.39], [no])

if test x"$os" = x"Linux"; then

    if test x"$enable_oldies" = x"no"; then

      AC_DEFINE_UNQUOTED(MIN_LINUX_KERNEL_VERSION, "[$MIN_LINUX_KERNEL_VERSION]", [Minimal Linux kernel version required])

    else

      AC_DEFINE(MIN_LINUX_KERNEL_VERSION, "2.6.11", [Minimal kernel version required])

    fi

fi

AX_BUILD_DATE_EPOCH(BUILD_DATE, "%FT%TZ", [BUILD_DATE="(unknown)"])

AC_DEFINE_UNQUOTED(BUILD_DATE, "[$BUILD_DATE]", [Build date and time])

AC_DEFINE_UNQUOTED(LLDP_CC, "[$CC $LLDP_CFLAGS $LLDP_CPPFLAGS $CFLAGS $CPPFLAGS]", [C compiler command])

AC_DEFINE_UNQUOTED(LLDP_LD, "[$LD $LLDP_LDFLAGS $LLDP_BIN_LDFLAGS $LDFLAGS $LIBS]", [Linker compiler command])

#######################

# Output results

AC_SUBST([LLDP_CFLAGS])

AC_SUBST([LLDP_CPPFLAGS])

AC_SUBST([LLDP_LDFLAGS])

AC_SUBST([LLDP_BIN_LDFLAGS])

AM_CONDITIONAL([HAVE_CHECK], [test x"$have_check" = x"yes"])

AM_CONDITIONAL([USE_SNMP], [test x"$with_snmp" = x"yes"])

AM_CONDITIONAL([USE_XML], [test x"$with_xml" = x"yes"])

AM_CONDITIONAL([USE_SECCOMP], [test x"$with_seccomp" = x"yes"])

dnl If old default of AR_FLAGS is otherwise being used (because of older automake),

dnl replace it with one without 'u'

if test "x$AR_FLAGS" = "xcru" ; then

  AR_FLAGS="cr"

fi

AC_OUTPUT

if test x"$LIBEVENT_EMBEDDED" = x; then

   libevent=system

else

   libevent=embedded

fi

cat <

------------------ Summary ------------------

 $PACKAGE_NAME version $PACKAGE_VERSION

  OS.............: $os

  Prefix.........: $prefix

  C Compiler.....: $CC $LLDP_CFLAGS $LLDP_CPPFLAGS $CFLAGS $CPPFLAGS

  Linker.........: $LD $LLDP_LDFLAGS $LLDP_BIN_LDFLAGS $LDFLAGS $LIBS

  Libevent.......: $libevent

  Readline.......: ${ax_cv_lib_readline}

 Optional features:

  SNMP support...: ${with_snmp-no}

  CDP............: $enable_cdp

  FDP............: $enable_fdp

  EDP............: $enable_edp

  SONMP..........: $enable_sonmp

  LLDPMED........: $enable_lldpmed

  DOT1...........: $enable_dot1

  DOT3...........: $enable_dot3

  CUSTOM.........: $enable_custom

  XML output.....: ${with_xml-no}

  Oldies support.: $enable_oldies

  seccomp........: ${with_seccomp-no}

 Privilege separation:

  Enabled........: $enable_privsep

  User/group.....: ${with_privsep_user}/${with_privsep_group}

  Chroot.........: ${with_privsep_chroot}

 Instrumentation (for devs only):

  Sanitizers.....: ${sanitizers:-none}

  Coverage.......: ${gcov}

------------- Compiler version --------------

$($CC --version || true)

-------------- Linker version ---------------

$($LD --version || true)

---------------------------------------------

Check the above options and compile with:

 ${MAKE-make}

EOF