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# configure.ac for libdecnumber                 -*- Autoconf -*-

# Process this file with autoconf to generate a configuration script.

# Copyright 2005, 2006, 2009 Free Software Foundation, Inc.

# This file is part of GCC.

# GCC 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, or (at your option) any

# later #version.

# GCC 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.

# You should have received a copy of the GNU General Public License

# along with GCC; see the file COPYING3.  If not see

# .

AC_PREREQ(2.64)

AC_INIT(libdecnumber, [ ], gcc-bugs@gcc.gnu.org, libdecnumber)

AC_CONFIG_SRCDIR(decNumber.h)

AC_CONFIG_MACRO_DIR(../config)

# Checks for programs.

AC_PROG_MAKE_SET

AC_PROG_CC

AC_PROG_RANLIB

MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing

AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])

AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])

AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])

# Figure out what compiler warnings we can enable.

# See config/warnings.m4 for details.

ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \

                          -Wmissing-prototypes -Wold-style-definition \

                          -Wmissing-format-attribute -Wcast-qual])

ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])

# Only enable with --enable-werror-always until existing warnings are

# corrected.

ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])

# Checks for header files.

AC_CHECK_HEADERS(ctype.h stddef.h string.h stdio.h)

GCC_HEADER_STDINT(gstdint.h)

# Checks for typedefs, structures, and compiler characteristics.

AC_C_CONST

AC_TYPE_OFF_T

AC_CHECK_SIZEOF(int)

AC_CHECK_SIZEOF(long)

# Checks for library functions.

AC_HEADER_STDC

AC_ARG_ENABLE(maintainer-mode,

[  --enable-maintainer-mode enable rules only needed by maintainers],,

enable_maintainer_mode=no)

if test "x$enable_maintainer_mode" = xno; then

  MAINT='#'

else

  MAINT=

fi

AC_SUBST(MAINT)

AC_CANONICAL_TARGET

# Default decimal format

# If you change the defaults here, be sure to change them in the GCC directory also

AC_MSG_CHECKING([for decimal floating point])

AC_ARG_ENABLE(decimal-float,

[  --enable-decimal-float={no,yes,bid,dpd}

                        enable decimal float extension to C.  Selecting 'bid'

                        or 'dpd' choses which decimal floating point format

                        to use],

[

  case $enable_decimal_float in

    yes | no | bid | dpd) ;;

    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.

Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;

  esac

],

[

  case $target in

    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)

      enable_decimal_float=yes

      ;;

    *)

      enable_decimal_float=no

      ;;

  esac

])

# x86's use BID format instead of DPD

# In theory --enable-decimal-float=no should not compile anything

# For the sake of simplicity, just use the default format in this directory

if test x$enable_decimal_float = xyes -o x$enable_decimal_float = xno; then

  case $target in

    i?86*-*-linux* | x86_64*-*-linux*)

      enable_decimal_float=bid

      ;;

    *)

      enable_decimal_float=dpd

      ;;

  esac

fi

# If BID is being used, additional objects should be linked in.

if test x$enable_decimal_float = xbid; then

  ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(bid_OBJS)"

else

  ADDITIONAL_OBJS=

fi

AC_MSG_RESULT($enable_decimal_float)

AC_SUBST(enable_decimal_float)

AC_SUBST(ADDITIONAL_OBJS)

AC_C_BIGENDIAN

# Output.

AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])

AC_CONFIG_FILES(Makefile)

AC_OUTPUT