dnl Process this file with autoconf to produce a configure script

dnl ------------------------------------------------

dnl Initialization and Versioning

dnl ------------------------------------------------

AC_INIT(mdct.c)

AC_CONFIG_MACRO_DIR([m4])

AC_CANONICAL_HOST

AC_CANONICAL_TARGET

AC_CONFIG_HEADERS([config.h])

AM_INIT_AUTOMAKE(libvorbisidec,1.2.1)

dnl AM_MAINTAINER_MODE only provides the option to configure to enable it

AM_MAINTAINER_MODE

dnl Library versioning

V_LIB_CURRENT=1

V_LIB_REVISION=3

V_LIB_AGE=0

AC_SUBST(V_LIB_CURRENT)

AC_SUBST(V_LIB_REVISION)

AC_SUBST(V_LIB_AGE)

dnl --------------------------------------------------

dnl Check for programs

dnl --------------------------------------------------

dnl save $CFLAGS since AC_PROG_CC likes to insert "-g -O2"

dnl if $CFLAGS is blank

cflags_save="$CFLAGS"

AC_PROG_CC

AC_PROG_CPP

CFLAGS="$cflags_save"

AC_LIBTOOL_WIN32_DLL

AC_PROG_LIBTOOL

dnl --------------------------------------------------

dnl Set build flags based on environment

dnl --------------------------------------------------

dnl Set some target options

cflags_save="$CFLAGS"

ldflags_save="$LDFLAGS"

if test -z "$GCC"; then

case $host in

arm-*-*)

DEBUG="-g -D_ARM_ASSEM_"

CFLAGS="-O -D_ARM_ASSEM_"

PROFILE="-p -g -O -D_ARM_ASSEM_" ;;

*)

DEBUG="-g"

CFLAGS="-O"

PROFILE="-g -p" ;;

esac

else

case $host in

arm-*-*)

DEBUG="-g -Wall -D__NO_MATH_INLINES -fsigned-char -D_ARM_ASSEM_"

CFLAGS="-O2 -D_ARM_ASSEM_ -fsigned-char"

PROFILE="-W -pg -g -O2 -D_ARM_ASSEM_ -fsigned-char -fno-inline-functions";;

*)

DEBUG="-g -Wall -D__NO_MATH_INLINES -fsigned-char"

CFLAGS="-O2 -Wall -fsigned-char"

PROFILE="-Wall -pg -g -O2 -fsigned-char -fno-inline-functions";;

esac

fi

CFLAGS="$CFLAGS $cflags_save -D_REENTRANT"

LDFLAGS="$LDFLAGS $ldflags_save"

# Test whenever ld supports -version-script

AC_PROG_LD

AC_PROG_LD_GNU

# check endianism

AC_C_BIGENDIAN

dnl --------------------------------------------------

dnl Options

dnl --------------------------------------------------

AC_ARG_ENABLE(

low-accuracy,

[ --enable-low-accuracy enable 32 bit only multiply operations],

CFLAGS="$CFLAGS -D_LOW_ACCURACY_"

)

dnl --------------------------------------------------

dnl Check for headers

dnl --------------------------------------------------

AC_CHECK_HEADER(memory.h,CFLAGS="$CFLAGS -DUSE_MEMORY_H",:)

dnl --------------------------------------------------

dnl Check for typedefs, structures, etc

dnl --------------------------------------------------

dnl none

dnl --------------------------------------------------

dnl Check for libraries

dnl --------------------------------------------------

PKG_PROG_PKG_CONFIG

HAVE_OGG=no

if test "x$PKG_CONFIG" != "x"

then

PKG_CHECK_MODULES(OGG, ogg >= 1.0, HAVE_OGG=yes, HAVE_OGG=no)

fi

if test "x$HAVE_OGG" = "xno"

then

dnl fall back to the old school test

XIPH_PATH_OGG(, AC_MSG_ERROR(must have Ogg installed!))

libs_save=$LIBS

LIBS="$OGG_LIBS"

AC_CHECK_FUNC(oggpack_writealign, , AC_MSG_ERROR(Ogg >= 1.0 required !))

LIBS=$libs_save

fi

dnl --------------------------------------------------

dnl Check for library functions

dnl --------------------------------------------------

AC_FUNC_ALLOCA

AC_FUNC_MEMCMP

AC_MSG_CHECKING(for C99 variable-size arrays)

AC_TRY_COMPILE( [], [static int x; char a[++x]; a[sizeof a - 1] = 0; int N; return a[0];],

[has_var_arrays=yes;AC_DEFINE([VAR_ARRAYS], [], [Use C99 variable-size arrays])

],

has_var_arrays=no

)

AC_MSG_RESULT($has_var_arrays)

# do this last after all checks, because Version_script is not generated yet.

if test "x$lt_cv_prog_gnu_ld" = "xyes"; then

SHLIB_VERSION_ARG="-Wl,--version-script=Version_script"

LDFLAGS="$LDFLAGS $SHLIB_VERSION_ARG"

fi

dnl --------------------------------------------------

dnl Do substitutions

dnl --------------------------------------------------

LIBS="$LIBS"

AC_SUBST(LIBS)

AC_SUBST(DEBUG)

AC_SUBST(PROFILE)

AC_OUTPUT(Makefile Version_script vorbisidec.pc)