configure.in

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dnl Process this file with autoconf to produce a configure script.
dnl
dnl $Id: configure.in,v 1.20 2004/02/20 22:08:30 raph Exp $

AC_INIT(include/mikmod.h.in)

LIBMIKMOD_MAJOR_VERSION=3
LIBMIKMOD_MINOR_VERSION=2
LIBMIKMOD_MICRO_VERSION=0

# bn where n is the beta
BETA=b2
# used for #if in header files
IS_BETA=1
# used when a numeric beta number is required.
BETA_RELEASE=2  # beta 1

LIBMIKMOD_VERSION=$LIBMIKMOD_MAJOR_VERSION.$LIBMIKMOD_MINOR_VERSION.$LIBMIKMOD_MICRO_VERSION$BETA

# stuff for autogenerating the spec file. 

# should be 1 for final releases
SPEC_RELEASE=0.2beta2
# should be empty for final releases
SPEC_PRERELEASE=-beta2


AM_INIT_AUTOMAKE(libmikmod,$LIBMIKMOD_VERSION)
AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE

# ==============================================================
# libmikmod specific control variables and their default values.
# ==============================================================

libmikmod_driver_af=yes
libmikmod_driver_aix=no
libmikmod_driver_alsa=yes
libmikmod_driver_esd=yes
libmikmod_driver_hp=no
libmikmod_driver_oss=yes
libmikmod_driver_sam9407=yes
libmikmod_driver_sgi=no
libmikmod_driver_sun=no
libmikmod_driver_osx=yes
libmikmod_driver_mac=no
libmikmod_driver_ultra=yes

libmikmod_driverlist=
libmikmod_dynload=yes
libmikmod_dynload_underscores=no
libmikmod_debug=no
libmikmod_threads=yes

DLOBJS=""

# =========================
# Configure script options.
# =========================

AC_ARG_ENABLE(af,
[  --enable-af             include AudioFile driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_af=yes
else
  libmikmod_driver_af=no
fi])

AC_ARG_ENABLE(alsa,
[  --enable-alsa           Linux only: include Advanced Linux Sound Architecture
                          driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_alsa=yes
else
  libmikmod_driver_alsa=no
fi])

AC_ARG_ENABLE(esd,
[  --enable-esd            include Enlightened sound daemon driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_esd=yes
else
  libmikmod_driver_esd=no
fi])

AC_ARG_ENABLE(oss,
[  --enable-oss            include OSS driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_oss=yes
else
  libmikmod_driver_oss=no
fi])

AC_ARG_ENABLE(osx,
[  --enable-osx            include OSX driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_osx=yes
else
  libmikmod_driver_osx=no
fi])

AC_ARG_ENABLE(mac,
[  --enable-mac            include MAC carbon driver [default=no]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_mac=yes
else
  libmikmod_driver_mac=no
fi])



AC_ARG_ENABLE(sam9407,
[  --enable-sam9407        Linux only: include sam9407 driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_sam9407=yes
else
  libmikmod_driver_sam9407=no
fi])

AC_ARG_ENABLE(ultra,
[  --enable-ultra          Linux only: include Ultra driver [guessed]],
[if test "$enableval" = "yes"
then
  libmikmod_driver_ultra=yes
else
  libmikmod_driver_ultra=no
fi])

AC_ARG_ENABLE(dl,
[  --enable-dl             load alsa, esound and ultra drivers at runtime
                          [default=yes]],
[if test "$enableval" = "yes"
then
  libmikmod_dynload=yes
else
  libmikmod_dynload=no
fi])

AC_ARG_ENABLE(debug,
[  --enable-debug          build a debug version of libmikmod [default=no]],
[if test "$enableval" = "yes"
then
  libmikmod_debug=yes
else
  libmikmod_debug=no
fi])

AC_ARG_ENABLE(threads,
[  --enable-threads        build a thread-safe version of libmikmod [default=guessed]],
[if test "$enableval" = "yes"
then
	libmikmod_threads=yes
else
	libmikmod_threads=no
fi])

# ===================
# Check for programs.
# ===================

AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AM_PROG_LIBTOOL
AC_PROG_MAKE_SET
AC_PROG_LIBTOOL

# Check if makeinfo support html output. If it doesn't, pretend it's missing
# rather than failing rebuilding the documentation.
AC_CACHE_CHECK([if makeinfo supports html output],libmikmod_cv_makeinfo_html,
if (makeinfo --help 2>&1 | grep html > /dev/null) 2>/dev/null
then
	libmikmod_cv_makeinfo_html=yes
else
	libmikmod_cv_makeinfo_html=no
fi)
if test $libmikmod_cv_makeinfo_html = no
then
	MAKEINFO="$missing_dir/missing makeinfo"
else
	MAKEINFO="$MAKEINFO --no-split"
fi

# ====================
# Check for libraries.
# ====================

# dl functions
# ------------
if test $libmikmod_dynload = yes
then
	libmikmod_dynload=no
	libmikmod_dllib=
	# SunOS-style shared libraries
	AC_CHECK_HEADERS(dlfcn.h)
	if test $ac_cv_header_dlfcn_h = yes
	then
		AC_CHECK_LIB(c,dlopen,libmikmod_dynload=sun,
		             [AC_CHECK_LIB(dl,dlopen,[libmikmod_dynload=sun
		                                      libmikmod_dllib="-ldl"],libmikmod_dynload=no)])
	else
		# HP-UX-style shared libraries
		AC_CHECK_HEADERS(dl.h)
		if test $ac_cv_header_dl_h = yes
		then
			AC_CHECK_LIB(dld,shl_load,[libmikmod_dynload=hp
			                           libmikmod_dllib="-ldld"
			                           DLOBJS="dl_hpux.lo"
			                           CFLAGS="${CFLAGS} -I${srcdir}/dlapi"],libmikmod_dynload=no)
		fi
	fi
fi

if test $libmikmod_dynload = sun
then
	AC_CACHE_CHECK(
		[wherever dynamically loaded symbols need underscores],
		libmikmod_cv_dynload_underscores,
		libmikmod_oldlibs=$LIBS
		LIBS="$LIBS $libmikmod_dllib"
		AC_LANG_SAVE
		AC_LANG_C
		AC_TRY_RUN([#include <dlfcn.h>
#ifndef	RTLD_GLOBAL
#define	RTLD_GLOBAL 0
#endif

int main(void)
{
	void *libc, *printfptr;
	libc = dlopen("libc.so", RTLD_LAZY | RTLD_GLOBAL);
	if (!libc)
		exit(1);
	
	printfptr = dlsym(libc, "_printf");
	dlclose(libc);
	exit(!printfptr);
}],
			libmikmod_cv_dynload_underscores=yes,
			libmikmod_cv_dynload_underscores=no,
			libmikmod_cv_dynload_underscores=no)
		AC_LANG_RESTORE
		LIBS=$libmikmod_oldlibs
	)
	if test $libmikmod_cv_dynload_underscores = yes
	then
		AC_DEFINE(DLSYM_NEEDS_UNDERSCORE)
	fi
fi

# POSIX.4 threads
# ---------------
if test $libmikmod_threads = yes
then
	libmikmod_threads=no
	AC_CACHE_CHECK(
		[if compiler recognizes -pthread],
		libmikmod_cv_gcc_pthread,
		ac_save_CFLAGS=$CFLAGS
		CFLAGS="$CFLAGS -pthread"
		AC_LANG_SAVE
		AC_LANG_C
		AC_TRY_LINK([#include <pthread.h>],
			[int p = pthread_create(NULL,NULL,NULL,NULL);],
			libmikmod_cv_gcc_pthread=yes,
			libmikmod_cv_gcc_pthread=no
		)
		AC_LANG_RESTORE
		CFLAGS=$ac_save_CFLAGS
	)
	if test $libmikmod_cv_gcc_pthread = yes
	then
		dnl There is no need for -pthread on darwin, and gcc
		dnl complains about unrecognized option -pthread
		if test "`uname`" != "Darwin"
		then
			libmikmod_threads=""
			CFLAGS="$CFLAGS -pthread"
		fi
	else
		dnl AC_CHECK_HEADERS(pthread.h) unreliable
		AC_CHECK_LIB(pthread,pthread_create,libmikmod_threads=-lpthread,
	             [AC_CHECK_LIB(c_r,pthread_create,libmikmod_threads=-lc_r)])
	fi
fi

# ALSA - Linux only
# -----------------
if test "`uname`" = "Linux" && test $libmikmod_driver_alsa = yes
then
	libmikmod_driver_alsa=no
	AC_CHECK_HEADERS(sys/asoundlib.h)
	if test $ac_cv_header_sys_asoundlib_h = yes
	then
		AC_CHECK_LIB(asound,snd_cards,libmikmod_driver_alsa=yes)
	fi
else
	libmikmod_driver_alsa=no
fi

# esd
# ---
if test $libmikmod_driver_esd = yes
then
	libmikmod_driver_esd=no
	AM_PATH_ESD(0.2.6,libmikmod_driver_esd=yes)
# We also need to know if esd is compiled with alsa support
	if test $libmikmod_driver_esd = yes
	then
		AC_CACHE_CHECK([if esd requires alsa],libmikmod_cv_esd_needs_alsa,
		if (esd-config --libs 2>&1 |grep asound >/dev/null) 2>/dev/null
		then
			libmikmod_cv_esd_needs_alsa=yes
		else
			libmikmod_cv_esd_needs_alsa=no
		fi)
	else
		libmikmod_cv_esd_needs_alsa=no
	fi
fi

# sgi audio - IRIX only
# ---------------------
case `uname` in
	IRIX*)
		AC_CHECK_HEADERS(dmedia/audio.h)
		if test $ac_cv_header_dmedia_audio_h = yes
		then
			AC_CHECK_LIB(audio,ALseterrorhandler,libmikmod_driver_sgi=yes)
		fi
	;;
esac

# audiofile
# ---------
if test $libmikmod_driver_af = yes
then
	libmikmod_driver_af=no
	AC_CHECK_HEADERS(AF/AFlib.h)
	if test $ac_cv_header_AF_AFlib_h = yes
	then
		AC_CHECK_LIB(AF,AFOpenAudioConn,libmikmod_driver_af=yes)
	fi
fi

# libgus - Linux only
# -------------------
if test "`uname`" = "Linux" && test $libmikmod_driver_ultra = yes
then
	libmikmod_driver_ultra=no
	AC_CHECK_HEADERS(libgus.h)
	if test $ac_cv_header_libgus_h = yes
	then
		AC_CHECK_LIB(gus,gus_cards,libmikmod_driver_ultra=yes)
	fi
else
	libmikmod_driver_ultra=no
fi

# sam9407 - Linux only
# --------------------
if test "`uname`" = "Linux" && test $libmikmod_driver_sam9407 = yes
then
	libmikmod_driver_sam9407=no
	AC_CHECK_HEADERS(sys/sam9407.h)
	if test $ac_cv_header_sys_sam9407_h = yes
	then
		libmikmod_driver_sam9407=yes
	fi
else
	libmikmod_driver_sam9407=no
fi

# =======================
# Check for header files.
# =======================

AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h malloc.h memory.h strings.h sys/ioctl.h unistd.h)

# =============================================================
# Check for typedefs, structures, and compiler characteristics.
# =============================================================

AC_PROG_GCC_TRADITIONAL
AC_C_CONST
AC_TYPE_PID_T
AC_TYPE_SIZE_T

AC_CACHE_CHECK([if compiler understands the signed keyword],
	libmikmod_cv_gcc_signed,
	AC_LANG_SAVE
	AC_LANG_C
	AC_TRY_COMPILE(,[signed int t = 0;],
		libmikmod_cv_gcc_signed=yes,libmikmod_cv_gcc_signed=no)
	AC_LANG_RESTORE)
if test $libmikmod_cv_gcc_signed = yes
then