share/autoconf/autoconf/erlang.m4 - toolchains/kvm - Git at Google

 # This file is part of Autoconf.                       -*- Autoconf -*-
 # Erlang/OTP language support.
 # Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.

 # This file is part of Autoconf.  This program is free
 # software; you can redistribute it and/or modify it under the
 # terms of the GNU General Public License as published by the
 # Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # Under Section 7 of GPL version 3, you are granted additional
 # permissions described in the Autoconf Configure Script Exception,
 # version 3.0, as published by the Free Software Foundation.
 #
 # You should have received a copy of the GNU General Public License
 # and a copy of the Autoconf Configure Script Exception along with
 # this program; see the files COPYINGv3 and COPYING.EXCEPTION
 # respectively.  If not, see <http://www.gnu.org/licenses/>.

 # Written by Romain Lenglet.


 # Table of Contents:
 #
 # 0. Utility macros
 #
 # 1. Language selection
 #    and routines to produce programs in a given language.
 #
 # 2. Producing programs in a given language.
 #
 # 3. Looking for a compiler
 #    And possibly the associated preprocessor.


 ## ------------------- ##
 ## 0. Utility macros.  ##
 ## ------------------- ##


 # AC_ERLANG_PATH_ERLC([VALUE-IF-NOT-FOUND], [PATH])
 # -------------------------------------------------
 AC_DEFUN([AC_ERLANG_PATH_ERLC],
 [AC_ARG_VAR([ERLC], [Erlang/OTP compiler command [autodetected]])dnl
 if test -n "$ERLC"; then
     AC_MSG_CHECKING([for erlc])
     AC_MSG_RESULT([$ERLC])
 else
     AC_PATH_TOOL(ERLC, erlc, [$1], [$2])
 fi
 AC_ARG_VAR([ERLCFLAGS], [Erlang/OTP compiler flags [none]])dnl
 ])


 # AC_ERLANG_NEED_ERLC([PATH])
 # ---------------------------
 AC_DEFUN([AC_ERLANG_NEED_ERLC],
 [AC_ERLANG_PATH_ERLC([not found], [$1])
 if test "$ERLC" = "not found"; then
     AC_MSG_ERROR([Erlang/OTP compiler (erlc) not found but required])
 fi
 ])


 # AC_ERLANG_PATH_ERL([VALUE-IF-NOT-FOUND], [PATH])
 # ------------------------------------------------
 AC_DEFUN([AC_ERLANG_PATH_ERL],
 [AC_ARG_VAR([ERL], [Erlang/OTP interpreter command [autodetected]])dnl
 if test -n "$ERL"; then
     AC_MSG_CHECKING([for erl])
     AC_MSG_RESULT([$ERL])
 else
     AC_PATH_TOOL(ERL, erl, [$1], [$2])[]dnl
 fi
 ])


 # AC_ERLANG_NEED_ERL([PATH])
 # --------------------------
 AC_DEFUN([AC_ERLANG_NEED_ERL],
 [AC_ERLANG_PATH_ERL([not found], [$1])
 if test "$ERL" = "not found"; then
     AC_MSG_ERROR([Erlang/OTP interpreter (erl) not found but required])
 fi
 ])


 ## ----------------------- ##
 ## 1. Language selection.  ##
 ## ----------------------- ##


 # AC_LANG(Erlang)
 # ---------------
 AC_LANG_DEFINE([Erlang], [erl], [ERL], [ERLC], [],
 [ac_ext=erl
 ac_compile='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
 ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD && echo "[#]!/bin/sh" > conftest$ac_exeext && AS_ECHO(["\"$ERL\" -run conftest start -run init stop -noshell"]) >> conftest$ac_exeext && chmod +x conftest$ac_exeext'
 ])


 # AC_LANG_ERLANG
 # -----------------
 AU_DEFUN([AC_LANG_ERLANG], [AC_LANG(Erlang)])


 ## ----------------------- ##
 ## 2. Producing programs.  ##
 ## ----------------------- ##


 # AC_LANG_PROGRAM(Erlang)([PROLOGUE], [BODY])
 # -------------------------------------------
 m4_define([AC_LANG_PROGRAM(Erlang)],
 [[-module(conftest).
 -export([start/0]).]]
 [$1
 start() ->
 $2
 .
 ])


 # _AC_LANG_NULL_PROGRAM(Erlang)
 # -----------------------------
 # Produce source that does nothing.
 m4_define([_AC_LANG_NULL_PROGRAM(Erlang)],
 [AC_LANG_PROGRAM([], [halt(0)])])


 # _AC_LANG_IO_PROGRAM(Erlang)
 # ---------------------------
 # Produce source that performs I/O.
 m4_define([_AC_LANG_IO_PROGRAM(Erlang)],
 [AC_LANG_PROGRAM([], [dnl
    ReturnValue = case file:write_file("conftest.out", "") of
        {error, _} -> 1;
        ok -> 0
    end,
    halt(ReturnValue)])])


 ## -------------------------------------------- ##
 ## 3. Looking for Compilers and Preprocessors.  ##
 ## -------------------------------------------- ##


 # AC_LANG_PREPROC(Erlang)
 # -----------------------
 # Find the Erlang preprocessor.  Must be AC_DEFUN'd to be AC_REQUIRE'able.
 AC_DEFUN([AC_LANG_PREPROC(Erlang)],
 [m4_warn([syntax],
 	 [$0: No preprocessor defined for ]_AC_LANG)])

 # AC_LANG_COMPILER(Erlang)
 # ------------------------
 # Find the Erlang compiler.  Must be AC_DEFUN'd to be AC_REQUIRE'able.
 AC_DEFUN([AC_LANG_COMPILER(Erlang)],
 [AC_REQUIRE([AC_ERLANG_PATH_ERLC])])


 # AC_ERLANG_CHECK_LIB(LIBRARY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 # ----------------------------------------------------------------------
 # Macro for checking if an Erlang library is installed, and to
 # determine its version.
 AC_DEFUN([AC_ERLANG_CHECK_LIB],
 [AC_REQUIRE([AC_ERLANG_PATH_ERLC])[]dnl
 AC_REQUIRE([AC_ERLANG_PATH_ERL])[]dnl
 AC_CACHE_CHECK([for Erlang/OTP '$1' library subdirectory],
     [ac_cv_erlang_lib_dir_$1],
     [AC_LANG_PUSH(Erlang)[]dnl
      AC_RUN_IFELSE(
 	[AC_LANG_PROGRAM([], [dnl
 	    ReturnValue = case code:lib_dir("[$1]") of
 	    {error, bad_name} ->
 		file:write_file("conftest.out", "not found\n"),
 		1;
 	    LibDir ->
 		file:write_file("conftest.out", LibDir),
 		0
 	    end,
 	    halt(ReturnValue)])],
 	[ac_cv_erlang_lib_dir_$1=`cat conftest.out`
 	 rm -f conftest.out],
 	[if test ! -f conftest.out; then
 	     AC_MSG_FAILURE([test Erlang program execution failed])
 	 else
 	     ac_cv_erlang_lib_dir_$1="not found"
 	     rm -f conftest.out
 	 fi])
      AC_LANG_POP(Erlang)[]dnl
     ])
 AC_CACHE_CHECK([for Erlang/OTP '$1' library version],
     [ac_cv_erlang_lib_ver_$1],
     [AS_IF([test "$ac_cv_erlang_lib_dir_$1" = "not found"],
 	[ac_cv_erlang_lib_ver_$1="not found"],
 	[ac_cv_erlang_lib_ver_$1=`AS_ECHO(["$ac_cv_erlang_lib_dir_$1"]) | sed -n -e 's,^.*-\([[^/-]]*\)$,\1,p'`])[]dnl
     ])
 AC_SUBST([ERLANG_LIB_DIR_$1], [$ac_cv_erlang_lib_dir_$1])
 AC_SUBST([ERLANG_LIB_VER_$1], [$ac_cv_erlang_lib_ver_$1])
 AS_IF([test "$ac_cv_erlang_lib_dir_$1" = "not found"], [$3], [$2])
 ])# AC_ERLANG_CHECK_LIB


 # AC_ERLANG_SUBST_ROOT_DIR
 # ------------------------
 # Determines the Erlang/OTP root directory.
 AC_DEFUN([AC_ERLANG_SUBST_ROOT_DIR],
 [AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
 AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
 AC_CACHE_CHECK([for Erlang/OTP root directory],
     [ac_cv_erlang_root_dir],
     [AC_LANG_PUSH(Erlang)[]dnl
      AC_RUN_IFELSE(
 	[AC_LANG_PROGRAM([], [dnl
 	    RootDir = code:root_dir(),
 	    file:write_file("conftest.out", RootDir),
 	    ReturnValue = 0,
 	    halt(ReturnValue)])],
 	[ac_cv_erlang_root_dir=`cat conftest.out`
 	 rm -f conftest.out],
 	[rm -f conftest.out
 	 AC_MSG_FAILURE([test Erlang program execution failed])])
      AC_LANG_POP(Erlang)[]dnl
     ])
 AC_SUBST([ERLANG_ROOT_DIR], [$ac_cv_erlang_root_dir])
 ])# AC_ERLANG_SUBST_ROOT_DIR


 # AC_ERLANG_SUBST_LIB_DIR
 # -----------------------
 AC_DEFUN([AC_ERLANG_SUBST_LIB_DIR],
 [AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
 AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
 AC_CACHE_CHECK([for Erlang/OTP library base directory],
     [ac_cv_erlang_lib_dir],
     [AC_LANG_PUSH(Erlang)[]dnl
      AC_RUN_IFELSE(
 	[AC_LANG_PROGRAM([], [dnl
 	    LibDir = code:lib_dir(),
 	    file:write_file("conftest.out", LibDir),
 	    ReturnValue = 0,
 	    halt(ReturnValue)])],
 	[ac_cv_erlang_lib_dir=`cat conftest.out`
 	 rm -f conftest.out],
 	[rm -f conftest.out
 	 AC_MSG_FAILURE([test Erlang program execution failed])])
      AC_LANG_POP(Erlang)[]dnl
     ])
 AC_SUBST([ERLANG_LIB_DIR], [$ac_cv_erlang_lib_dir])
 ])# AC_ERLANG_SUBST_LIB_DIR


 # AC_ERLANG_SUBST_INSTALL_LIB_DIR
 # -------------------------------
 # Directories for installing Erlang/OTP packages are separated from the
 # directories determined by running the Erlang/OTP installation that is used
 # for building.
 AC_DEFUN([AC_ERLANG_SUBST_INSTALL_LIB_DIR],
 [AC_MSG_CHECKING([for Erlang/OTP library installation base directory])
 AC_ARG_VAR([ERLANG_INSTALL_LIB_DIR],
     [Erlang/OTP library installation base directory [LIBDIR/erlang/lib]])
 if test -n "$ERLANG_INSTALL_LIB_DIR"; then
     AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR])
 else
     AC_SUBST([ERLANG_INSTALL_LIB_DIR], ['${libdir}/erlang/lib'])
     AC_MSG_RESULT([$libdir/erlang/lib])
 fi
 ])# AC_ERLANG_SUBST_INSTALL_LIB_DIR


 # AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR(PACKAGE_TARNAME, PACKAGE_VERSION)
 # --------------------------------------------------------------------
 AC_DEFUN([AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR],
 [AC_REQUIRE([AC_ERLANG_SUBST_INSTALL_LIB_DIR])[]dnl
 AC_MSG_CHECKING([for Erlang/OTP '$1' library installation subdirectory])
 AC_ARG_VAR([ERLANG_INSTALL_LIB_DIR_$1],
     [Erlang/OTP '$1' library installation subdirectory
        [ERLANG_INSTALL_LIB_DIR/$1-$2]])
 if test -n "$ERLANG_INSTALL_LIB_DIR_$1"; then
     AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR_$1])
 else
     AC_SUBST([ERLANG_INSTALL_LIB_DIR_$1], ['${ERLANG_INSTALL_LIB_DIR}/$1-$2'])
     AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR/$1-$2])
 fi
 ])# AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR


 # AC_ERLANG_SUBST_ERTS_VER
 # ------------------------
 # Determines the Erlang runtime system version.
 AC_DEFUN([AC_ERLANG_SUBST_ERTS_VER],
 [AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
 AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
 AC_CACHE_CHECK([for Erlang/OTP ERTS version],
     [ac_cv_erlang_erts_ver],
     [AC_LANG_PUSH([Erlang])[]dnl
      AC_RUN_IFELSE(
 	[AC_LANG_PROGRAM([], [dnl
 	    Version = erlang:system_info(version),
 	    file:write_file("conftest.out", Version),
 	    ReturnValue = 0,
 	    halt(ReturnValue)])],
 	[ac_cv_erlang_erts_ver=`cat conftest.out`
 	 rm -f conftest.out],
 	[rm -f conftest.out
 	 AC_MSG_FAILURE([test Erlang program execution failed])])
      AC_LANG_POP([Erlang])[]dnl
     ])
 AC_SUBST([ERLANG_ERTS_VER], [$ac_cv_erlang_erts_ver])
 ])# AC_ERLANG_SUBST_ERTS_VER
	# This file is part of Autoconf. -- Autoconf --
	# Erlang/OTP language support.
	# Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc.

	# This file is part of Autoconf. This program is free
	# software; you can redistribute it and/or modify it under the
	# terms of the GNU General Public License as published by the
	# Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# Under Section 7 of GPL version 3, you are granted additional
	# permissions described in the Autoconf Configure Script Exception,
	# version 3.0, as published by the Free Software Foundation.
	#
	# You should have received a copy of the GNU General Public License
	# and a copy of the Autoconf Configure Script Exception along with
	# this program; see the files COPYINGv3 and COPYING.EXCEPTION
	# respectively. If not, see <http://www.gnu.org/licenses/>.

	# Written by Romain Lenglet.


	# Table of Contents:
	#
	# 0. Utility macros
	#
	# 1. Language selection
	# and routines to produce programs in a given language.
	#
	# 2. Producing programs in a given language.
	#
	# 3. Looking for a compiler
	# And possibly the associated preprocessor.



	## ------------------- ##
	## 0. Utility macros. ##
	## ------------------- ##


	# AC_ERLANG_PATH_ERLC([VALUE-IF-NOT-FOUND], [PATH])
	# -------------------------------------------------
	AC_DEFUN([AC_ERLANG_PATH_ERLC],
	[AC_ARG_VAR([ERLC], [Erlang/OTP compiler command [autodetected]])dnl
	if test -n "$ERLC"; then
	AC_MSG_CHECKING([for erlc])
	AC_MSG_RESULT([$ERLC])
	else
	AC_PATH_TOOL(ERLC, erlc, [$1], [$2])
	fi
	AC_ARG_VAR([ERLCFLAGS], [Erlang/OTP compiler flags [none]])dnl
	])


	# AC_ERLANG_NEED_ERLC([PATH])
	# ---------------------------
	AC_DEFUN([AC_ERLANG_NEED_ERLC],
	[AC_ERLANG_PATH_ERLC([not found], [$1])
	if test "$ERLC" = "not found"; then
	AC_MSG_ERROR([Erlang/OTP compiler (erlc) not found but required])
	fi
	])


	# AC_ERLANG_PATH_ERL([VALUE-IF-NOT-FOUND], [PATH])
	# ------------------------------------------------
	AC_DEFUN([AC_ERLANG_PATH_ERL],
	[AC_ARG_VAR([ERL], [Erlang/OTP interpreter command [autodetected]])dnl
	if test -n "$ERL"; then
	AC_MSG_CHECKING([for erl])
	AC_MSG_RESULT([$ERL])
	else
	AC_PATH_TOOL(ERL, erl, [$1], [$2])[]dnl
	fi
	])


	# AC_ERLANG_NEED_ERL([PATH])
	# --------------------------
	AC_DEFUN([AC_ERLANG_NEED_ERL],
	[AC_ERLANG_PATH_ERL([not found], [$1])
	if test "$ERL" = "not found"; then
	AC_MSG_ERROR([Erlang/OTP interpreter (erl) not found but required])
	fi
	])



	## ----------------------- ##
	## 1. Language selection. ##
	## ----------------------- ##


	# AC_LANG(Erlang)
	# ---------------
	AC_LANG_DEFINE([Erlang], [erl], [ERL], [ERLC], [],
	[ac_ext=erl
	ac_compile='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
	ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD && echo "[#]!/bin/sh" > conftest$ac_exeext && AS_ECHO(["\"$ERL\" -run conftest start -run init stop -noshell"]) >> conftest$ac_exeext && chmod +x conftest$ac_exeext'
	])



	# AC_LANG_ERLANG
	# -----------------
	AU_DEFUN([AC_LANG_ERLANG], [AC_LANG(Erlang)])



	## ----------------------- ##
	## 2. Producing programs. ##
	## ----------------------- ##


	# AC_LANG_PROGRAM(Erlang)([PROLOGUE], [BODY])
	# -------------------------------------------
	m4_define([AC_LANG_PROGRAM(Erlang)],
	[[-module(conftest).
	-export([start/0]).]]
	[$1
	start() ->
	$2
	.
	])


	# _AC_LANG_NULL_PROGRAM(Erlang)
	# -----------------------------
	# Produce source that does nothing.
	m4_define([_AC_LANG_NULL_PROGRAM(Erlang)],
	[AC_LANG_PROGRAM([], [halt(0)])])


	# _AC_LANG_IO_PROGRAM(Erlang)
	# ---------------------------
	# Produce source that performs I/O.
	m4_define([_AC_LANG_IO_PROGRAM(Erlang)],
	[AC_LANG_PROGRAM([], [dnl
	ReturnValue = case file:write_file("conftest.out", "") of
	{error, _} -> 1;
	ok -> 0
	end,
	halt(ReturnValue)])])


	## -------------------------------------------- ##
	## 3. Looking for Compilers and Preprocessors. ##
	## -------------------------------------------- ##


	# AC_LANG_PREPROC(Erlang)
	# -----------------------
	# Find the Erlang preprocessor. Must be AC_DEFUN'd to be AC_REQUIRE'able.
	AC_DEFUN([AC_LANG_PREPROC(Erlang)],
	[m4_warn([syntax],
	[$0: No preprocessor defined for ]_AC_LANG)])

	# AC_LANG_COMPILER(Erlang)
	# ------------------------
	# Find the Erlang compiler. Must be AC_DEFUN'd to be AC_REQUIRE'able.
	AC_DEFUN([AC_LANG_COMPILER(Erlang)],
	[AC_REQUIRE([AC_ERLANG_PATH_ERLC])])


	# AC_ERLANG_CHECK_LIB(LIBRARY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
	# ----------------------------------------------------------------------
	# Macro for checking if an Erlang library is installed, and to
	# determine its version.
	AC_DEFUN([AC_ERLANG_CHECK_LIB],
	[AC_REQUIRE([AC_ERLANG_PATH_ERLC])[]dnl
	AC_REQUIRE([AC_ERLANG_PATH_ERL])[]dnl
	AC_CACHE_CHECK([for Erlang/OTP '$1' library subdirectory],
	[ac_cv_erlang_lib_dir_$1],
	[AC_LANG_PUSH(Erlang)[]dnl
	AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([], [dnl
	ReturnValue = case code:lib_dir("[$1]") of
	{error, bad_name} ->
	file:write_file("conftest.out", "not found\n"),
	1;
	LibDir ->
	file:write_file("conftest.out", LibDir),
	0
	end,
	halt(ReturnValue)])],
	[ac_cv_erlang_lib_dir_$1=`cat conftest.out`
	rm -f conftest.out],
	[if test ! -f conftest.out; then
	AC_MSG_FAILURE([test Erlang program execution failed])
	else
	ac_cv_erlang_lib_dir_$1="not found"
	rm -f conftest.out
	fi])
	AC_LANG_POP(Erlang)[]dnl
	])
	AC_CACHE_CHECK([for Erlang/OTP '$1' library version],
	[ac_cv_erlang_lib_ver_$1],
	[AS_IF([test "$ac_cv_erlang_lib_dir_$1" = "not found"],
	[ac_cv_erlang_lib_ver_$1="not found"],
	[ac_cv_erlang_lib_ver_$1=`AS_ECHO(["$ac_cv_erlang_lib_dir_$1"]) \| sed -n -e 's,^.-\([[^/-]]\)$,\1,p'`])[]dnl
	])
	AC_SUBST([ERLANG_LIB_DIR_$1], [$ac_cv_erlang_lib_dir_$1])
	AC_SUBST([ERLANG_LIB_VER_$1], [$ac_cv_erlang_lib_ver_$1])
	AS_IF([test "$ac_cv_erlang_lib_dir_$1" = "not found"], [$3], [$2])
	])# AC_ERLANG_CHECK_LIB


	# AC_ERLANG_SUBST_ROOT_DIR
	# ------------------------
	# Determines the Erlang/OTP root directory.
	AC_DEFUN([AC_ERLANG_SUBST_ROOT_DIR],
	[AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
	AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
	AC_CACHE_CHECK([for Erlang/OTP root directory],
	[ac_cv_erlang_root_dir],
	[AC_LANG_PUSH(Erlang)[]dnl
	AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([], [dnl
	RootDir = code:root_dir(),
	file:write_file("conftest.out", RootDir),
	ReturnValue = 0,
	halt(ReturnValue)])],
	[ac_cv_erlang_root_dir=`cat conftest.out`
	rm -f conftest.out],
	[rm -f conftest.out
	AC_MSG_FAILURE([test Erlang program execution failed])])
	AC_LANG_POP(Erlang)[]dnl
	])
	AC_SUBST([ERLANG_ROOT_DIR], [$ac_cv_erlang_root_dir])
	])# AC_ERLANG_SUBST_ROOT_DIR


	# AC_ERLANG_SUBST_LIB_DIR
	# -----------------------
	AC_DEFUN([AC_ERLANG_SUBST_LIB_DIR],
	[AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
	AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
	AC_CACHE_CHECK([for Erlang/OTP library base directory],
	[ac_cv_erlang_lib_dir],
	[AC_LANG_PUSH(Erlang)[]dnl
	AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([], [dnl
	LibDir = code:lib_dir(),
	file:write_file("conftest.out", LibDir),
	ReturnValue = 0,
	halt(ReturnValue)])],
	[ac_cv_erlang_lib_dir=`cat conftest.out`
	rm -f conftest.out],
	[rm -f conftest.out
	AC_MSG_FAILURE([test Erlang program execution failed])])
	AC_LANG_POP(Erlang)[]dnl
	])
	AC_SUBST([ERLANG_LIB_DIR], [$ac_cv_erlang_lib_dir])
	])# AC_ERLANG_SUBST_LIB_DIR


	# AC_ERLANG_SUBST_INSTALL_LIB_DIR
	# -------------------------------
	# Directories for installing Erlang/OTP packages are separated from the
	# directories determined by running the Erlang/OTP installation that is used
	# for building.
	AC_DEFUN([AC_ERLANG_SUBST_INSTALL_LIB_DIR],
	[AC_MSG_CHECKING([for Erlang/OTP library installation base directory])
	AC_ARG_VAR([ERLANG_INSTALL_LIB_DIR],
	[Erlang/OTP library installation base directory [LIBDIR/erlang/lib]])
	if test -n "$ERLANG_INSTALL_LIB_DIR"; then
	AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR])
	else
	AC_SUBST([ERLANG_INSTALL_LIB_DIR], ['${libdir}/erlang/lib'])
	AC_MSG_RESULT([$libdir/erlang/lib])
	fi
	])# AC_ERLANG_SUBST_INSTALL_LIB_DIR


	# AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR(PACKAGE_TARNAME, PACKAGE_VERSION)
	# --------------------------------------------------------------------
	AC_DEFUN([AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR],
	[AC_REQUIRE([AC_ERLANG_SUBST_INSTALL_LIB_DIR])[]dnl
	AC_MSG_CHECKING([for Erlang/OTP '$1' library installation subdirectory])
	AC_ARG_VAR([ERLANG_INSTALL_LIB_DIR_$1],
	[Erlang/OTP '$1' library installation subdirectory
	[ERLANG_INSTALL_LIB_DIR/$1-$2]])
	if test -n "$ERLANG_INSTALL_LIB_DIR_$1"; then
	AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR_$1])
	else
	AC_SUBST([ERLANG_INSTALL_LIB_DIR_$1], ['${ERLANG_INSTALL_LIB_DIR}/$1-$2'])
	AC_MSG_RESULT([$ERLANG_INSTALL_LIB_DIR/$1-$2])
	fi
	])# AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR


	# AC_ERLANG_SUBST_ERTS_VER
	# ------------------------
	# Determines the Erlang runtime system version.
	AC_DEFUN([AC_ERLANG_SUBST_ERTS_VER],
	[AC_REQUIRE([AC_ERLANG_NEED_ERLC])[]dnl
	AC_REQUIRE([AC_ERLANG_NEED_ERL])[]dnl
	AC_CACHE_CHECK([for Erlang/OTP ERTS version],
	[ac_cv_erlang_erts_ver],
	[AC_LANG_PUSH([Erlang])[]dnl
	AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([], [dnl
	Version = erlang:system_info(version),
	file:write_file("conftest.out", Version),
	ReturnValue = 0,
	halt(ReturnValue)])],
	[ac_cv_erlang_erts_ver=`cat conftest.out`
	rm -f conftest.out],
	[rm -f conftest.out
	AC_MSG_FAILURE([test Erlang program execution failed])])
	AC_LANG_POP([Erlang])[]dnl
	])
	AC_SUBST([ERLANG_ERTS_VER], [$ac_cv_erlang_erts_ver])
	])# AC_ERLANG_SUBST_ERTS_VER