AC_INIT([vpp], [17.04], [vpp-dev@fd.io])
LT_INIT
AC_CONFIG_AUX_DIR([.])
AM_INIT_AUTOMAKE([subdir-objects])
AM_SILENT_RULES([yes])
AC_CONFIG_FILES([Makefile plugins/Makefile vpp-api/python/Makefile vpp-api/java/Makefile])
AC_CONFIG_MACRO_DIR([m4])

AC_PROG_CC
AM_PROG_AS
AM_PROG_LIBTOOL
AC_PROG_YACC
AM_PATH_PYTHON

AM_CONDITIONAL([CROSSCOMPILE], [test "$cross_compiling" == "yes"])

###############################################################################
# Macros
###############################################################################

AC_DEFUN([ENABLE_ARG],
[
  AC_ARG_ENABLE($1,
    AC_HELP_STRING(patsubst([--enable-$1],[_],[-]), $2),
    [enable_$1=yes n_enable_$1=1],
    [enable_$1=no n_enable_$1=0])
  AM_CONDITIONAL(m4_toupper(ENABLE_$1), test "$enable_$1" = "yes")
  m4_append([list_of_enabled], [$1], [, ])
])

AC_DEFUN([DISABLE_ARG],
[
  AC_ARG_ENABLE($1,
    AC_HELP_STRING(patsubst([--disable-$1],[_],[-]), $2),
    [enable_$1=no n_enable_$1=0],
    [enable_$1=yes n_enable_$1=1])
  AM_CONDITIONAL(m4_toupper(ENABLE_$1), test "$enable_$1" = "yes")
  m4_append([list_of_enabled], [$1], [, ])
])

AC_DEFUN([WITH_ARG],
[
  AC_ARG_WITH($1,
    AC_HELP_STRING(patsubst([--with-$1],[_],[-]), $2),
    [with_$1=yes n_with_$1=1],
    [with_$1=no n_with_$1=0])
  AM_CONDITIONAL(m4_toupper(WITH_$1), test "$with_$1" = "yes")
  m4_append([list_of_with], [$1], [, ])
])

AC_DEFUN([WITHOUT_ARG],
[
  AC_ARG_WITH($1,
    AC_HELP_STRING(patsubst([--without-$1],[_],[-]), $2),
    [with_$1=no n_with_$1=0],
    [with_$1=yes n_with_$1=1])
  AM_CONDITIONAL(m4_toupper(WITH_$1), test "$with_$1" = "yes")
  m4_append([list_of_with], [$1], [, ])
])

AC_DEFUN([PLUGIN_ENABLED],
[
   AC_ARG_ENABLE($1_plugin,
     AC_HELP_STRING([--disable-$1-plugin], [Do not build $1 plugin]),
       [enable_$1_plugin=no],
       [enable_$1_plugin=yes ])
  AM_CONDITIONAL(m4_toupper(ENABLE_$1_PLUGIN), test "$enable_$1_plugin" = "yes")
  m4_append([list_of_plugins], [$1], [, ])
])

AC_DEFUN([PLUGIN_DISABLED],
[
   AC_ARG_ENABLE($1_plugin,
     AC_HELP_STRING([--enable-$1-plugin], [Build $1 plugin]),
       [enable_$1_plugin=yes ],
       [enable_$1_plugin=no])
  AM_CONDITIONAL(m4_toupper(ENABLE_$1_PLUGIN), test "$enable_$1_plugin" = "yes")
  m4_append([list_of_plugins], [$1], [, ])
])

AC_DEFUN([PRINT_VAL], [ AC_MSG_RESULT(AC_HELP_STRING($1,$2)) ])

###############################################################################
# configure arguments
###############################################################################

# --enable-X
ENABLE_ARG(tests,	[Enable unit tests])
ENABLE_ARG(dpdk_shared,	[Enable unit tests])
ENABLE_ARG(perftool,	[Enable perftool])
ENABLE_ARG(g2,		[Enable g2])

# --disable-X
DISABLE_ARG(vlib,	[Disable vlib and dependant libs and binaries])
DISABLE_ARG(svm,	[Disable svm and dependant libs and binaries])
DISABLE_ARG(papi,	[Disable Python API bindings])
DISABLE_ARG(japi,	[Disable Java API bindings])

# --with-X
WITH_ARG(dpdk_crypto_sw,[Use DPDK cryptodev SW PMDs])
WITH_ARG(dpdk_mlx5_pmd,	[Use DPDK with mlx5 PMD])

# --without-X
WITHOUT_ARG(libssl,	[Disable libssl])
WITHOUT_ARG(apicli,	[Disable binary api CLI])

AC_ARG_WITH(unix,
            AC_HELP_STRING([--with-unix],[Compile unix version of clib]),
	    [],
	    [case $host_os in
	      darwin* | linux*) with_unix=yes;;
	      *) with_unix=no;;
	      esac])

AM_CONDITIONAL(WITH_UNIX, test "$with_unix" = "yes")

AC_ARG_WITH(pre-data,
            AC_HELP_STRING([--with-pre-data],[Set buffer rewrite space]),
	    [case $with_pre_data in
	       128) ;;
	       256) ;;
               *) with_pre_data="pre-data-not-set" ;;
	     esac], [with_pre_data=128])

###############################################################################
# Substitutions and defines
###############################################################################

AC_SUBST(PRE_DATA_SIZE,		[$with_pre_data])
AC_SUBST(APICLI,		[-DVPP_API_TEST_BUILTIN=${n_with_apicli}])

AC_DEFINE_UNQUOTED(DPDK_SHARED_LIB,	[${n_enable_dpdk_shared}])
AC_DEFINE_UNQUOTED(DPDK_CRYPTO_SW,	[${n_with_dpdk_crypto_sw}])
AC_DEFINE_UNQUOTED(WITH_LIBSSL,		[${n_with_libssl}])


# Silence following noise:
# ar: `u' modifier ignored since `D' is the default (see `U')
AR_FLAGS=cr
AC_SUBST(AR_FLAGS)

###############################################################################
# Plugins
###############################################################################

# Please keep alphabetical order
PLUGIN_ENABLED(acl)
PLUGIN_ENABLED(dpdk)
PLUGIN_ENABLED(flowperpkt)
PLUGIN_ENABLED(ila)
PLUGIN_ENABLED(ioam)
PLUGIN_ENABLED(ixge)
PLUGIN_ENABLED(lb)
PLUGIN_ENABLED(memif)
PLUGIN_ENABLED(sixrd)
PLUGIN_ENABLED(snat)
PLUGIN_DISABLED(srv6sample)

###############################################################################
# Dependency checks
###############################################################################

AM_COND_IF([ENABLE_DPDK_SHARED],
[
  AC_CHECK_HEADERS([rte_config.h],
    [],
    [AC_MSG_ERROR([DPDK header files not found])],)
  AC_CHECK_LIB( [dpdk], [rte_eal_init],
    [],
    [AC_MSG_ERROR([DPDK shared library not found])],)
])

AM_COND_IF([ENABLE_G2],
[
  PKG_CHECK_MODULES(g2, gtk+-2.0)
])

# If cross-compiling, we need external vppapigen and we cannot continue without it
# For native builds, we just set dependency on vpppaigen binary in top_builddir
AM_COND_IF([CROSSCOMPILE],
[
  AC_PATH_PROG([VPPAPIGEN], [vppapigen], [no])
  if test "$VPPAPIGEN" = "no"; then
    AC_MSG_ERROR([Externaly built vppapigen is needed when cross-compiling...])
  fi
],[
  VPPAPIGEN=\$\(top_builddir\)/vppapigen
])
AC_SUBST([VPPAPIGEN])


###############################################################################
# JAVA
###############################################################################

AM_COND_IF([ENABLE_JAPI],
[
  AX_VPP_FIND_JDK8
  AC_SUBST(JAVA_HOME)
  AC_SUBST(JAVAC)
  AC_SUBST(JAVAH)
  AC_SUBST(JAR)
])

###############################################################################
# PYTHON
###############################################################################

AM_COND_IF([ENABLE_PAPI],
[
  AM_PATH_PYTHON
])

###############################################################################
# Output
###############################################################################

AC_OUTPUT

AC_MSG_RESULT([==============================================================================])
PRINT_VAL([version], $PACKAGE $VERSION)
PRINT_VAL([prefix], ${prefix})
PRINT_VAL([libdir], ${libdir})
PRINT_VAL([includedir], ${includedir})
PRINT_VAL([CFLAGS], ${CFLAGS})
PRINT_VAL([CPPFLAGS], ${CPPFLAGS})
PRINT_VAL([LDFLAGS], ${LDFLAGS})
AM_COND_IF([ENABLE_JAPI],
[
  PRINT_VAL([JAVA_VERSION], ${JAVA_VERSION})
  PRINT_VAL([JAVA_HOME], ${JAVA_HOME})
])

AC_MSG_RESULT([])
AC_MSG_RESULT([with:])
m4_foreach([x], m4_dquote(list_of_with), [
  AC_MSG_RESULT(AC_HELP_STRING(x, m4_join([], [${with_], x, [}])))
])

AC_MSG_RESULT([])
AC_MSG_RESULT([enabled:])
m4_foreach([x], m4_dquote(list_of_enabled), [
  AC_MSG_RESULT(AC_HELP_STRING(x, m4_join([], [${enable_], x, [}])))
])

AC_MSG_RESULT([])
AC_MSG_RESULT([plugins:])
m4_foreach([x], m4_dquote(list_of_plugins), [
  AC_MSG_RESULT(AC_HELP_STRING(x, m4_join([], [${enable_], x, [_plugin}])))
])
AC_MSG_RESULT([==============================================================================])