configure.in

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dnl $Id: configure.in,v 1.115 2005/09/04 19:11:58 aleidinger Exp $
dnl
dnl
dnl don't forget to set ASM_FOR_ARCH to a space delimited list of
dnl processor architectures, for which assembler routines exist
dnl
dnl
dnl Exported and configured variables:
dnl CC
dnl CFLAGS
dnl LDFLAGS
dnl LDADD
dnl NASM

dnl extra vars for frontend:
dnl FRONTEND_LDFLAGS
dnl FRONTEND_CFLAGS
dnl FRONTEND_LDADD

AC_PREREQ(2.53)
AC_INIT(lame,3.97,[e-mail])
AC_CONFIG_SRCDIR([libmp3lame/lame.c])

dnl check system
AC_CANONICAL_HOST

dnl automake
AM_INIT_AUTOMAKE
AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE
AM_MAKE_INCLUDE

dnl check environment
AC_AIX
AC_ISC_POSIX
AC_MINIX
case $host_os in
  *cygwin* ) CYGWIN=yes;;
         * ) CYGWIN=no;;
esac

dnl libtool
# AC_DISABLE_SHARED
AC_PROG_LIBTOOL
AC_SUBST(LIBTOOL_DEPS)
CFLAGS="${ac_save_CFLAGS}"

# increase this when the shared lib becomes totally incompatible
LIB_MAJOR_VERSION=0

# increase this when changes are made, but they are upward compatible
# to previous versions
LIB_MINOR_VERSION=0

dnl # work around for a bug, don't know where it is exactly
if test "${ac_cv_cygwin}" = "yes"; then
	if test "${CC}" != "gcc"; then
		AC_MSG_ERROR([Please use]
			[   CC=gcc ./configure]
			[Abort this configure run and add "CC=gcc" or you will]
			[see errors and no lame.exe will be build.])
	fi
fi

dnl check programs
AM_PROG_CC_STDC

dnl more automake stuff
AM_C_PROTOTYPES

AC_CHECK_HEADER(dmalloc.h)
if test "${ac_cv_header_dmalloc_h}" = "yes"; then
	AM_WITH_DMALLOC
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS( \
		 errno.h \
		 fcntl.h \
		 limits.h \
		 stdint.h \
		 string.h \
		 sys/soundcard.h \
		 sys/time.h \
		 unistd.h \
		 linux/soundcard.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
if test ${cross_compiling} = "no"; then
	AC_C_BIGENDIAN
fi

if test "${GCC}" = "yes"; then
	AC_MSG_CHECKING(version of GCC)
	GCC_version=`${CC} --version | sed -n '1s/^[[^ ]]* (.*) //;s/ .*$//;1p'`
	AC_MSG_RESULT(${GCC_version})
fi

AC_SYS_LARGEFILE

AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(unsigned short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(unsigned int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(unsigned long)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(unsigned long long)
AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)

AC_C_LONG_DOUBLE
if test "${ac_cv_c_have_long_double}" = "yes" ; then
	AC_CHECK_SIZEOF(long double)
fi

AC_CHECK_TYPES([uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t])

AH_VERBATIM([HAVE_UINT8_T],
[/* add uint8_t type */
#undef HAVE_UINT8_T
#ifndef HAVE_UINT8_T
	typedef unsigned char uint8_t;
#endif])

AH_VERBATIM([HAVE_INT8_T],
[/* add int8_t type */
#undef HAVE_INT8_T
#ifndef HAVE_INT8_T
	typedef char int8_t;
#endif])

AH_VERBATIM([HAVE_UINT16_T],
[/* add uint16_t type */
#undef HAVE_UINT16_T
#ifndef HAVE_UINT16_T
	typedef unsigned short uint16_t;
#endif])

AH_VERBATIM([HAVE_INT16_T],
[/* add int16_t type */
#undef HAVE_INT16_T
#ifndef HAVE_INT16_T
	typedef short int16_t;
#endif])

if test "${ac_cv_sizeof_unsigned_short}" = "4"; then
	AC_DEFINE(A_UINT32_T,unsigned short)
else
	if test "${ac_cv_sizeof_unsigned_int}" = "4"; then
		AC_DEFINE(A_UINT32_T,unsigned int)
	else
		if test "${ac_cv_sizeof_unsigned_long}" = "4"; then
			AC_DEFINE(A_UINT32_T,unsigned long)
		else
			AC_MSG_ERROR([CHECK_TYPE_uint32_t - please report to [e-mail]])
		fi
	fi
fi

AH_VERBATIM([HAVE_UINT32_T],
[/* add uint32_t type */
#undef HAVE_UINT32_T
#ifndef HAVE_UINT32_T
#undef A_UINT32_T
	typedef A_UINT32_T uint32_t;
#endif])

if test "${ac_cv_sizeof_short}" = "4"; then
	AC_DEFINE(A_INT32_T,short)
else
	if test "${ac_cv_sizeof_int}" = "4"; then
		AC_DEFINE(A_INT32_T,int)
	else
		if test "${ac_cv_sizeof_long}" = "4"; then
			AC_DEFINE(A_INT32_T,long)
		else
			AC_MSG_ERROR([CHECK_TYPE_int32_t - please report to [e-mail]])
		fi
	fi
fi

AH_VERBATIM([HAVE_INT32_T],
[/* add int32_t type */
#undef HAVE_INT32_T
#ifndef HAVE_INT32_T
#undef A_INT32_T
	typedef A_INT32_T int32_t;
#endif])

if test "${ac_cv_sizeof_unsigned_int}" = "8"; then
	AC_DEFINE(A_UINT64_T,unsigned int)
else
	if test "${ac_cv_sizeof_unsigned_long}" = "8"; then
		AC_DEFINE(A_UINT64_T,unsigned long)
	else
		if test "${ac_cv_sizeof_unsigned_long_long}" = "8"; then
			AC_DEFINE(A_UINT64_T,unsigned long long)
		else
			AC_MSG_ERROR([CHECK_TYPE_uint64_t - please report to [e-mail]])
		fi
	fi
fi

AH_VERBATIM([HAVE_UINT64_T],
[/* add uint64_t type */
#undef HAVE_UINT64_T
#ifndef HAVE_UINT64_T
#undef A_UINT64_T
	typedef A_UINT64_T uint64_t;
#endif])

if test "${ac_cv_sizeof_int}" = "8"; then
	AC_DEFINE(A_INT64_T,int)
else
	if test "${ac_cv_sizeof_long}" = "8"; then
		AC_DEFINE(A_INT64_T,long)
	else
		if test "${ac_cv_sizeof_long_long}" = "8"; then
			AC_DEFINE(A_INT64_T,long long)
		else
			AC_MSG_ERROR([CHECK_TYPE_int64_t - please report to [e-mail]])
		fi
	fi
fi

AH_VERBATIM([HAVE_INT64_T],
[/* add int64_t type */
#undef HAVE_INT64_T
#ifndef HAVE_INT64_T
#undef A_INT64_T
	typedef A_INT64_T int64_t;
#endif])

alex_IEEE854_FLOAT80
if test "${alex_cv_ieee854_float80}" = "yes" ; then
	if test "${ac_cv_c_long_double}" = "yes" ; then
		AC_CHECK_TYPES(ieee854_float80_t, long double)
		AH_VERBATIM([HAVE_IEEE854_FLOAT80_T],
[/* add ieee854_float80_t type */
#undef HAVE_IEEE854_FLOAT80_T
#ifndef HAVE_IEEE854_FLOAT80_T
	typedef long double ieee854_float80_t;
#endif])

		AC_DEFINE(HAVE_IEEE854_FLOAT80, 1, [system has 80 bit floats])
	fi
fi
AC_CHECK_TYPES([ieee754_float64_t, ieee754_float32_t])

AH_VERBATIM([HAVE_IEEE754_FLOAT64_T],
[/* add ieee754_float64_t type */
#undef HAVE_IEEE754_FLOAT64_T
#ifndef HAVE_IEEE754_FLOAT64_T
	typedef double ieee754_float64_t;
#endif])

AH_VERBATIM([HAVE_IEEE754_FLOAT32_T],
[/* add ieee754_float32_t type */
#undef HAVE_IEEE754_FLOAT32_T
#ifndef HAVE_IEEE754_FLOAT32_T
	typedef float ieee754_float32_t;
#endif])

AC_DEFINE(LAME_LIBRARY_BUILD, 1, [requested by Frank, seems to be temporary needed for a smooth transition])


if test ${cross_compiling} = "yes"; then
	AC_MSG_WARN([]
  [**************************************************************************]
  [*                                                                        *]
  [* You are cross compiling:                                               *]
  [*   - I did not have a change to determine                               *]
  [*     + the size of:                                                     *]
  [*       - short                                                          *]
  [*       - unsigned short                                                 *]
  [*       - int                                                            *]
  [*       - unsigned int                                                   *]
  [*       - long                                                           *]
  [*       - unsigned long                                                  *]
  [*       - float                                                          *]
  [*       - double                                                         *]
  [*       - long double                                                    *]
  [*     + the endianess of the system                                      *]
  [*   - You have to provide appropriate defines for them in config.h, e.g. *]
  [*     + define SIZEOF_SHORT to 2 if the size of a short is 2             *]
  [*     + define WORDS_BIGENDIAN if your system is a big endian system     *]
  [*                                                                        *]
  [**************************************************************************])
fi

AC_TYPE_SIZE_T
AC_HEADER_TIME

dnl Checks for library functions.
AC_FUNC_ALLOCA
AC_CHECK_FUNCS(gettimeofday strtol)

if test "X${ac_cv_func_strtol}" != "Xyes"; then
	AC_MSG_ERROR([function strtol is mandatory])
fi

dnl Check if we have winsock, if so, we are on a mingw system
dnl and need libwsock32
SOCKETFUNCTION=YES
AC_CHECK_HEADER(winsock2.h, [AC_DEFINE([HAVE_WINSOCKET], [], [winsock])
		LIBS="$LIBS -lwsock32"])  
if test $ac_cv_header_winsock2_h = no; then
	AC_CHECK_FUNCS(socket)
	if test $ac_cv_func_socket = no; then
		# maybe it is in libsocket
		AC_CHECK_LIB(socket, socket, [AC_DEFINE(HAVE_SOCKET)
			LIBS="$LIBS -lsocket"])

		if test "X${ac_cv_lib_socket_socket}" != "Xyes"; then
			SOCKETFUNCTION=NO
		else
			case ${host_os} in
			*solaris*)
				LIBS="$LIBS -lnsl"
				;;
			esac
		fi
	fi
fi


dnl Initialize configuration variables for the Makefile
CFLAGS=${CFLAGS}
CONFIG_DEFS=${CONFIG_DEFS}
NASM=
INCLUDES="-I\$(top_srcdir)/include -I\$(srcdir)"
FRONTEND_LDFLAGS=
FRONTEND_CFLAGS=
LIB_SOURCES=
MAKEDEP="-M"
RM_F="rm -f"

AC_ARG_ENABLE(nasm,
  [  --enable-nasm              Allow the use of nasm if available],
  ASM_FOR_ARCH="i386", ASM_FOR_ARCH="")

dnl Checks for libraries.

AC_CHECK_HEADERS(termcap.h)
AC_CHECK_HEADERS(ncurses/termcap.h)
AC_CHECK_LIB(termcap, initscr, HAVE_TERMCAP="termcap")
AC_CHECK_LIB(curses, initscr, HAVE_TERMCAP="curses")
AC_CHECK_LIB(ncurses, initscr, HAVE_TERMCAP="ncurses")
 
dnl math lib
AC_CHECK_LIB(m, cos, USE_LIBM="-lm")
dnl free fast math library
AC_CHECK_LIB(ffm, cos, USE_LIBM="-lffm -lm")
dnl Compaq fast math library.
AC_CHECK_LIB(cpml, cos, USE_LIBM="-lcpml")
CONFIG_MATH_LIB="${USE_LIBM}"

AC_CHECK_LIB(sndfile, sf_open_read, HAVE_SNDFILE="yes")


dnl configure use of features

AM_PATH_GTK(1.2.0, HAVE_GTK="yes", HAVE_GTK="no")
if test "${HAVE_GTK}" = "yes"; then
	AC_DEFINE(HAVE_GTK, 1, have working GTK)
fi


dnl ElectricFence malloc debugging
AC_MSG_CHECKING(use of ElectricFence malloc debugging)
AC_ARG_ENABLE(efence,
  [  --enable-efence            Use ElectricFence for malloc debugging],
  CONFIG_EFENCE="${enableval}", CONFIG_EFENCE="no")

case "${CONFIG_EFENCE}" in
yes)
	AC_CHECK_LIB(efence, EF_Print, HAVE_EFENCE="-lefence")
	if test "x${HAVE_EFENCE}" != "x-lefence"; then
		AC_MSG_RESULT(yes, but libefence not found)
	else
		LDADD="${LDADD} ${HAVE_EFENCE}"
		AC_DEFINE(HAVE_EFENCE, 1, we link against libefence)
		AC_MSG_RESULT(${CONFIG_EFENCE})
	fi
	;;
no)
	AC_MSG_RESULT(${CONFIG_EFENCE})
	;;
*)
	AC_MSG_ERROR(bad value