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dnl -*- m4 -*-
dnl
dnl mad - MPEG audio decoder
dnl Copyright (C) 2000-2001 Robert Leslie
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
dnl
AC_REVISION([$Id: configure.in,v 1.1.1.1 2001-11-04 19:00:27 lampret Exp $])dnl

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

AC_INIT(libmad/decoder.h)
AM_INIT_AUTOMAKE(mad, 0.13.0b)

AM_CONFIG_HEADER(config.h)
AC_CONFIG_SUBDIRS(libmad)

dnl System type.

AC_CANONICAL_HOST

dnl Checks for programs.
AC_PROG_MAKE_SET
AC_CHECK_TOOL(CC, cc, :)
AC_PROG_INSTALL
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_ISC_POSIX

dnl Compiler options.

AC_PROG_GCC_TRADITIONAL

arch=""
debug=""
optimize=""
profile=""

set -- $CFLAGS
CFLAGS="-Wall"

while test $# -gt 0
do
    case "$1" in
        -Wall)
            shift
            ;;
        -g)
            debug="-g"
            shift
            ;;
        -m*)
            arch="$arch $1"
            shift
            ;;
        -fomit-frame-pointer)
            shift
            ;;
        -O*|-f*)
            optimize="$1"
            shift
            ;;
        *)
            CFLAGS="$CFLAGS $1"
            shift
            ;;
    esac
done

case "$host" in
    or32*)            AC_DEFINE(EMBED) ;;
esac

if test "$GCC" = yes
then
    if test -z "$arch"
    then
        case "$host" in
            i386-*)           ;;
            i?86-*)           arch="-m486" ;;
            arm*-empeg-*)     arch="-march=armv4 -mtune=strongarm1100" ;;
            armv4*-*)         arch="-march=armv4 -mtune=strongarm" ;;
            powerpc-*)        ;;
            mips*-agenda-*)   arch="-mcpu=vr4100" ;;
            mips*-luxsonor-*) arch="-mips1 -mcpu=r3000 -Wa,-m4010" ;;
            or32*)            arch="-mhard-div -nostdlib" ;;
        esac
    fi

    if test -n "$optimize"
    then
        : #? optimize="$optimize -funroll-loops"
        : #? optimize="$optimize -finline-functions"
    fi
fi

dnl Checks for header files.

AC_HEADER_STDC
dnl AC_CHECK_HEADERS(termios.h poll.h signal.h)

dnl Checks for typedefs, structures, and compiler characteristics.

AC_C_CONST
AC_C_INLINE

dnl Checks for library functions.

AC_FUNC_VPRINTF
AC_CHECK_FUNCS(madvise)
AC_REPLACE_FUNCS(strcasecmp strncasecmp)
AC_SEARCH_LIBS(pow, m)
AC_SEARCH_LIBS(log10, m)

case "$host" in
    *-linux*) AC_DEFINE(HAVE_MMAP) ;;
    *)        AC_FUNC_MMAP ;;
esac

AC_MSG_CHECKING(whether to use mmap)
AC_ARG_ENABLE(mmap,
[  --disable-mmap     \
     do not use mmap even if available (lower mem usage)], [
    case "$enableval" in
        yes) AC_DEFINE(USE_MMAP) ;;
    esac
], [
    AC_DEFINE(USE_MMAP)
])
AC_MSG_RESULT(${enable_mmap-yes})

AC_CACHE_SAVE

dnl Select an audio system.

AUDIO=""
AC_SUBST(AUDIO)

AC_MSG_CHECKING(for audio support)

audio="unknown"

case "$host" in
    arm*-empeg-*) audio="empeg" ;;
esac

if test "$audio" = unknown
then
    AC_EGREP_CPP(yes, [
# include <sys/soundcard.h>
# if defined(OPEN_SOUND_SYSTEM) || defined(UNIX_SOUND_SYSTEM) ||  \
    defined(VOXWARE)
yes
# endif
], [audio="oss"])
fi

if test "$audio" = unknown
then
    AC_EGREP_CPP(audio_info_t, [
# include <sys/audioio.h>
], [audio="sun"])
fi

AC_MSG_RESULT($audio)

if test "$audio" = unknown
then
    AC_MSG_WARN(audio support not available; using null module)
    AC_DEFINE(AUDIO_DEFAULT, audio_null)
else
    audio="audio_$audio"
    AC_DEFINE_UNQUOTED(AUDIO_DEFAULT, $audio)

    AUDIO="$audio.o"
fi

dnl libmad options...

AC_ARG_ENABLE(speed,
    [  --enable-speed          optimize for speed over accuracy])
AC_ARG_ENABLE(accuracy,
    [  --enable-accuracy       optimize for accuracy over speed])
AC_ARG_ENABLE(fpm,
    [  --enable-fpm=<arch>     use <arch>-specific fixed-point math routines
                          (one of: intel, arm, mips, sparc, ppc,
                           64bit, default)])
AC_ARG_ENABLE(sso,
    [  --enable-sso            use subband synthesis optimization])
AC_ARG_ENABLE(aso,
    [  --disable-aso           disable architecture-specific optimizations])
AC_ARG_ENABLE(strict-iso,
    [  --enable-strict-iso     use strict ISO/IEC interpretations])

dnl madplay options...

AC_MSG_CHECKING(whether to enable profiling)
AC_ARG_ENABLE(profiling,
    [  --enable-profiling      generate profiling code], [
    case "$enableval" in
        yes) profile="-pg" ;;
    esac
])
AC_MSG_RESULT(${enable_profiling-no})

AC_MSG_CHECKING(whether to enable debugging)
AC_ARG_ENABLE(debugging,
    [  --enable-debugging      enable diagnostic debugging support
  --disable-debugging     do not enable debugging and use more optimization], [
    case "$enableval" in
        yes)
            AC_DEFINE(DEBUG)
            AUDIO="$AUDIO audio_hex.o"
            optimize=""
            ;;
        no)
            if test -n "$profile"
            then
    AC_MSG_ERROR(--enable-profiling and --disable-debugging are incompatible)
            fi

            AC_DEFINE(NDEBUG)
            debug=""
            if test "$GCC" = yes
            then
                optimize="$optimize -fomit-frame-pointer"
            fi
            ;;
    esac
])
AC_MSG_RESULT(${enable_debugging-default})

case "$enable_debugging" in
    yes) AC_CHECK_LIB(efence, malloc) ;;
esac

AC_MSG_CHECKING(whether to enable experimental code)
AC_ARG_ENABLE(experimental,
    [  --enable-experimental   enable experimental code], [
    case "$enableval" in
        yes) AC_DEFINE(EXPERIMENTAL) ;;
    esac
])
AC_MSG_RESULT(${enable_experimental-no})

dnl Create output files.

test -n "$arch"     && CFLAGS="$CFLAGS $arch"
test -n "$debug"    && CFLAGS="$CFLAGS $debug"
test -n "$optimize" && CFLAGS="$CFLAGS $optimize"
test -n "$profile"  && CFLAGS="$CFLAGS $profile" LDFLAGS="$LDFLAGS $profile"
dnl CFLAGS="$CFLAGS -S"
AC_OUTPUT(Makefile)